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Automotive Casting Companies

Last updated: January 2026

This directory lists 88 automotive casting companies across the United States, from high-volume die casters to specialized permanent mold foundries.

Buyers in this category are typically solving critical problems related to lightweighting vehicles, improving thermal management for EV battery enclosures, or ensuring the structural integrity and vibration dampening of powertrain and chassis components. Successfully delivering on these requirements demands expertise in advanced metallurgy, precise control over the gating system and metal flow simulation, and an unwavering focus on defect prevention, particularly for internal porosity which is often the silent killer of component performance.

Suppliers in this space range from large, integrated facilities offering high-pressure die casting (HPDC) for complex, thin-walled aluminum parts and low-pressure permanent mold casting for thicker-section structural components, to specialized ductile iron foundries for heavy-duty applications, and even precision sand casting shops ideal for prototyping or low-volume specialty components that require unique alloys or intricate internal passages.

To engage these suppliers effectively, buyers should come prepared with fully dimensioned CAD models (ideally with GD&T), detailed material specifications (e.g., A380, A356, specific grades of ductile iron), annual volume forecasts, and a clear articulation of any specific PPAP level requirements. Suppliers, in turn, will expect to collaborate on DFM early in the process, leveraging their casting expertise to optimize part design for manufacturability, minimize material usage, and reduce cycle times while ensuring part integrity.

A significant trend reshaping the automotive casting industry is the rapid shift towards electrification, driving demand for innovative lightweighting solutions and superior thermal management in battery trays, motor housings, and inverter covers. This pushes foundries to invest in advanced alloys, simulation software, and highly automated production cells capable of producing larger, thinner-walled, and increasingly complex castings with zero defects.

88 companies·62 emails·73 phones

Company Directory

88 companies nationwide

Hercules, CA

Based in Hercules, CA, A&B Die Casting provides high-quality parts with accuracy and reliability. The company utilizes state-of-the-art technology and expert engineers for complex die casting projects, offering turnkey solutions for subassemblies. They are an award-winning aluminum casting provider.

Coffeyville, KS

Based in Coffeyville, KS, ACME Foundry specializes in gray iron casting for automotive parts and on-road vehicle components. The company provides custom-engineered core room, molding, melting, and finishing services. Established in 1905, they offer comprehensive casting solutions for the automotive industry.

Waukesha, WI

Adroit Manufacturing is an ISO 9001:2015 certified, U.S.-based contract manufacturing company. They specialize in custom-engineered components, offering expertise in various casting types including Die Casting, Investment Casting, and Sand Casting. Additional services encompass CNC machining, forging, fabrication, and mechanical assembly, supported by a global sourcing facility.

La Porte, IN

Based in La Porte, IN, Aero Metals provides precision investment casting for medium-high volume production. They specialize in aftermarket automotive parts for heavy trucks and off-road vehicles. The company offers custom tooling and handles complex geometries, operating under ISO 9001:2015 certification.

Based in London, KY, Aisin Automotive Casting, LLC (AAC) specializes in manufacturing engine-related functional and die cast parts for the North American automotive industry. The company provides a turn-key production system from die-casting to the assembly of components, ensuring quality and reliability for vehicle functions.

Fontana, CA

Based in Fontana, CA, American Die Casting, Inc. specializes in aluminum, zinc, and brass castings. The company operates die cast machines from 385 to 1800 tons, including one of the largest on the west coast, handling intricate parts from less than an ounce to over 60 lbs. They offer in-house tool design and repair, are ISO 9001:2015 Certified, and ITAR Registered.

Angstrom Aluminum Casting specializes in providing comprehensive aluminum casting, machining, and assembly services. Leveraging high pressure die casting, automated handling, and heat treatment, the company serves the automotive, industrial, and off-highway sectors. They offer E-mobility and powertrain solutions, emphasizing cost efficiency, lightweight designs, and speed of execution.

Based in Lehighton, PA, Blue Ridge Pressure Castings specializes in high-pressure aluminum die casting and machining. They provide complex transmission and engine components for the automotive, heavy truck, and engine manufacturing industries. The company uses modern techniques and automation to deliver precise, high-quality castings and engineered solutions.

Fontana, CA

Based in Fontana, CA, Cal Die Casting, Inc. specializes in precision aluminum and zinc die casting. The company offers comprehensive services including design, tooling, production, CNC machining, and secondary operations for various industries. They serve automotive, aerospace, medical, and industrial clients with high-quality component manufacturing.

Richmond, CA

Based in Richmond, CA, California Casting, Inc. is a family-owned company established in 1968. They specialize in producing high-quality aluminum, bronze, and brass sand castings. The company serves diverse industries, including military, aerospace, marine, medical, and automotive sectors.

Irvine, CA

California Sealing Solutions, based in Irvine, CA, specializes in custom parts and sealing components. The company provides aluminum die casting, metal stampings, machined metal parts, and plastic injection molding. They offer design engineering and work with rubber, metals, and plastics from concept to production.

Peoria, IL

Based in Peoria, IL, Cast Technologies provides brass, bronze, and aluminum casting services. Specializing in sand casting, including green sand and no-bake, the company offers in-house machining, design analysis, and pressure testing. They produce industrial castings ranging from less than a pound to hundreds of pounds using various alloys.

North Hollywood, CA

Based in North Hollywood, CA, Kinetic Die Casting Company, Inc. specializes in high-quality aluminum and zinc die casting. Operating since 1994, they provide fast production of custom cast parts for various industrial applications. The company offers comprehensive die casting solutions, serving sectors including the automotive industry.

Houston, TX

Based in Houston, TX, Coastal Casting specializes in new and exchanged industrial heads, head gasket kits, and engine blocks. They also provide crankshafts for new applications or exchange. The company focuses on repair and supply services for critical automotive and industrial engine components, ensuring reliability.

Bensenville, IL

Based in Bensenville, IL, Chicago White Metal Casting, Inc. specializes in custom aluminum, zinc, and magnesium die cast components. With over 88 years of experience, the company provides full-service die casting, machining, finishing, and assembly for industrial, medical, and transportation applications.

Travelers Rest, SC

Deeco Metals, based in Travelers Rest, SC, specializes in durable iron castings, including ductile and grey iron, meeting ASTM/SAE standards. They utilize sand, die, investment, and gravity casting methods with ISO 9001 certified quality assurance. The company also offers metal finishing and assembly.

Denison, TX

Denison Industries, based in Denison, TX, provides precision machined aluminum castings and sand casting foundry services. Their AS 9100 D & ISO 9001:2015 certified facility specializes in highly cored, leak-tight aluminum components for the automotive sector, including cast transmission housings. They also serve aerospace, commercial, and military industries.

San Jacinto, CA

Based in San Jacinto, CA, Edelbrock Foundries is an ISO9001 certified manufacturer specializing in state-of-the-art aluminum casting production. They offer comprehensive services including sand metal casting, core production, pattern making, heat treating, engineering, and machining for various industries, delivering American-made value and quality solutions.

Clinton, SC

Ermak Foundry & Machining, Inc. provides aluminum alloy casting services, including sand casting and permanent mold production, with in-house machining and finishing. They collaborate with automotive clients on prototypes, custom products, and large production runs, emphasizing quality and timely delivery. All manufacturing is 100% Made in the USA.

Fort Recovery, OH

Based in Fort Recovery, OH, Fort Recovery Industries, Inc. is a global manufacturer offering fully integrated, single-source aluminum and zinc die casting services. They provide expertise from design through finishing, assembly, and logistics. The company holds ISO 9001:2015 registration.

Based in Franklin, PA, Franklin Precision Castings specializes in precision investment castings for the automotive and transportation industries. They offer comprehensive in-house capabilities including engineering, tool-building, rapid prototyping, and CNC machining. Their automated facility ensures efficient production and delivery of fully finished components.

Selma, CA

Based in Selma, CA, Fresno Valves & Castings operates one of the largest brass and bronze jobbing foundries west of the Mississippi. They specialize in custom non-ferrous casting services, producing a wide range of components for industrial applications, demonstrating extensive foundry capabilities.

San Leandro, CA

General Foundry Service, based in San Leandro, CA, specializes in custom aluminum and zinc-aluminum cast parts. They offer five casting processes, CNC machining, and surface finishing including plating and painting. With over 70 years of expertise, they provide turnkey solutions for prototype, low and intermediate volume finished castings.

Naperville, IL

Based in Naperville, IL, Impro Precision is a global manufacturer specializing in automotive castings. The company utilizes processes like sand casting to produce a variety of automotive parts, particularly in iron. With extensive manufacturing facilities across seven countries, Impro Precision serves the automotive industry with high-precision components.

IPC Foundry Group operates a network of investment casting foundries located in Utah and Texas, also extending internationally. The company specializes in turnkey casting solutions, offering comprehensive services including machining and various metal finishing work. They focus on providing custom-tailored, high-quality castings.

Allen, TX

Based in Allen, TX, Kentzy International, Inc. offers multi-regional custom manufacturing services. Their capabilities include die casting, precision tooling, and injection molding. They provide solutions for various industrial sectors, leveraging their expertise in diverse manufacturing processes.

Hayden, ID

Based in Hayden, ID, LA Aluminum Casting Company specializes in permanent mold aluminum casting. This single-source manufacturer, established in 1947, produces dependable aluminum vehicle components using a proven casting process. They offer competitive pricing and provide custom casting solutions for the automotive industry.

Galena, IL

Based in Galena, IL, Lemfco, Inc. is a cast iron foundry specializing in manufacturing small to medium runs of gray iron castings. They produce parts from ounces to 100 pounds using green sand molding, offering tooling, core production, and finishing services. Lemfco serves diverse industries, including automotive.

Lodi, CA

Lodi Iron Works is a California-based iron foundry producing quality steel, meehanite, and iron castings in the USA. They offer comprehensive services from pattern making to CNC machining. The company serves a wide range of industries, including automotive, infrastructure, defense, aerospace, and oil and gas.

Columbus, OH

Based in Columbus, OH, MES Inc. specializes in high-pressure aluminum die casting services. They provide custom die casting and precision die cast components, catering to both automotive and industrial applications. The company focuses on delivering high-quality casting solutions for various critical needs.

Michigan Manufacturing International is a global supplier providing extensive manufacturing capabilities, including metal casting services. The company specializes in producing quality cast parts and mechanical assemblies for the automotive, oil and gas, and air flow industries, adhering to ISO 9001:2015 quality standards.

Terre Haute, IN

Modern Aluminum Castings Co., Inc. specializes in aluminum and die casting services. Based in Terre Haute, IN, the company provides a comprehensive one-stop source for various casting needs. They handle projects ranging from initial requests to delivering simple subassemblies for commercial and industrial applications.

Brooksville, FL

Based in Brooksville, FL, M&P Manufacturing USA provides precision die, sand, and investment casting services for OEM customers. Specializing in metal and plastic component parts, the company serves various industries, including the automotive sector. They offer comprehensive capabilities like CNC machining, extrusion, and molding for diverse manufacturing needs.

Pace Industries manufactures aluminum, zinc, and magnesium die cast parts and assemblies. Operating since 1970, the company provides full-service solutions for customers in various sectors, including the automotive industry. It focuses on producing high-quality components.

Temple, TX

Based in Temple, TX, Permocast is an aluminum casting foundry specializing in custom permanent mold castings. With over 54 years of experience, they produce quality aluminum castings for various applications. The company offers comprehensive finishing services, including machining and powder coating, and is ISO 9001 compliant.

PHB Inc. is a U.S. manufacturer specializing in high-quality turnkey aluminum and zinc die casting solutions. The company also provides CNC machining, plastic molding, and tool and die services. Based in Fairview, PA, PHB Inc. serves industrial clients across the automotive, military, and consumer goods sectors.

Somonauk, IL

Precision Enterprises, based in Somonauk, IL, is an aluminum sand casting foundry founded in 1947. They provide machined castings using multiple foundries and over 25 CNC centers. Specializing in aluminum, grey iron, and ductile iron, they also offer engineering expertise and various secondary finishes.

Commerce City, CO

Based in Commerce City, CO, Protocast Inc. specializes in manufacturing turnkey aluminum, magnesium, and zinc castings for global OEMs. They provide comprehensive services from prototype to production, utilizing precision sand, die, and investment casting processes. Serving the automotive, aerospace, and agriculture sectors, Protocast holds ISO 9001:2015 certification.

Salem, OH

Based in Salem, OH, Quaker City Castings is a foundry specializing in ductile, gray, iron, steel, and alloy castings. They utilize no-bake sand and centrifugal casting processes for complex, high-performance parts. The company offers in-house CNC machining and serves automotive, construction, agriculture, and locomotive industries.

Seattle, WA

Based in Seattle, WA, Quickparts provides extensive manufacturing services, including die casting, for scaling production from prototypes to high-volume. With over 35 years of experience, the company is ISO 9001:2015 certified and ITAR registered, serving diverse industrial needs.

RCM Industries is an aluminum die casting manufacturer providing high quality parts. The company offers precision-based standards and operations, serving industrial clients with custom casting solutions. With manufacturing facilities in Illinois, RCM Industries directly provides casting services to meet diverse project requirements for durable components.

Industry, CA

Based in Industry, CA, Reuland Aluminum Castings specializes in producing high-quality aluminum castings. These components are engineered to provide strength, precision, and reliability, enhancing product performance for various industrial and commercial applications, including those within the automotive sector.

Bland, MO

Roberson Machine Company, based in Bland, MO, is a US-based manufacturing firm specializing in CNC machining. They offer diverse capabilities including aluminum fabrication processes such as casting, welding, and extrusion. Serving a range of industries, the company provides prototype to production parts for the automotive sector.

Shelbyville, IN

Based in Shelbyville, IN, Ryobi Die Casting (USA), Inc. specializes in high-quality, technically complex aluminum casting products for the automotive industry. The company operates globally with full engineering capabilities, including R&D, die design, and product design support. It has received awards from major automotive manufacturers like Honda and General Motors.

Alameda, CA

Based in Alameda, CA, SKS Die Casting and Machining is a direct supplier of precision machined and finished components. They specialize in aluminum and zinc die casting services, serving the aerospace, semiconductor, automotive, and medical industries with in-house design and tooling.

Kingsville, MO

Stahl Specialty Company specializes in manufacturing high-quality aluminum castings for the automotive industry. Their advanced casting techniques produce durable and precise components designed to enhance vehicle performance, fuel efficiency, and safety for various automotive applications.

Georgetown, TX

Based in Georgetown, TX, Texas Speed & Performance specializes in aftermarket performance products for LSx, LT, Hemi, and Coyote platforms. The company offers aftermarket cast cylinder heads and provides in-house cylinder head manufacturing, engine assembly, and machining services for their performance engines.

Bowling Green, KY

Trace Die Cast, INC, based in Bowling Green, KY, is a full-service aluminum die casting manufacturer. The company provides technically challenging high-pressure die casting and machining solutions for the global automotive industry. Focused on technology and innovation, they deliver quality parts to automotive manufacturers.

Sugar Land, TX

Based in Sugar Land, TX, Texas Precision Metalcraft offers investment casting for parts using aluminum, carbon steel, stainless, nickel, cobalt, and copper-based metals. They provide rapid prototyping, dependable production, and on-time delivery with typical 6-8 week lead times. The company also handles new mold creation, existing mold takeover, and reverse engineering.

Houston, TX

Based in Houston, TX, TYA is a metal casting manufacturer in the USA. They specialize in investment, aluminum, iron, and gravity casting for OEM clients. TYA also provides machining, forging, fasteners, and heat exchange solutions.

Wabash, IN

Based in Wabash, IN, Wabash Castings is an aluminum sand casting foundry specializing in precision aluminum parts. They offer comprehensive services, from rapid prototyping to high-volume production. Serving diverse industries, including automotive, they provide engine and structural components meeting rigorous sector demands.

Sheboygan, WI

Watry Industries operates an automated, high-tech permanent mold aluminum foundry, specializing in custom permanent mold casting solutions. The company leverages robotics for pouring and casting extraction, offering comprehensive services including CNC machining, finishing, heat treating, powder coating, and assembly for precision components, exemplified by projects for new motor development.

Roseville, MI

Based in Roseville, MI, Warner Brothers Foundry is a family-owned, American-made company providing high-quality aluminum, brass, and bronze sand castings since 1955. This full-service metal casting foundry manufactures non-ferrous parts in-house for various industries, including those in the Detroit automotive region. They focus on delivering durable, precise castings.

Cuba, MO

Based in Cuba, MO, American Precision Die Casting provides quality die casting services to manufacturers across the nation. Specializing in precision casting, the company offers flexible solutions for various production needs. They are ISO 9001-2015 certified, ensuring high standards in their manufacturing processes for industrial clients.

Oxford, MI

Barron Industries is a US-based turnkey manufacturer specializing in precision machined investment castings. The company provides lightweight, high-strength automotive castings and components for OEMs and Tier 1 suppliers, from prototype to full production. They also serve aerospace, defense, and space industries.

North Hollywood, CA

Based in North Hollywood, CA, Cast Parts specializes in high-pressure aluminum and zinc die casting. They produce intricate, tailored components from under an ounce to ten pounds. This cost-effective process delivers strong, lightweight, near-net-shape parts for diverse manufacturing needs, including automotive applications.

EMP Tech specializes in precision aluminum die casting, producing lightweight transmission housings using vacuum-assisted high-pressure techniques. They utilize A380-T6 aluminum alloy to achieve significant weight reduction for automotive applications.

Foundrion Group is a North American foundry group specializing in sand and metal casting services. They offer comprehensive capabilities including pattern creation, 3D scanning and printing, rapid prototyping, material testing, non-destructive testing, machining, and heat treating for diverse industries.

Southfield, MI

Based in Southfield, MI, Grede is an American iron casting provider specializing in ductile, gray, and specialty iron castings. The company manufactures safety-critical parts for automotive, commercial truck, and industrial markets, offering technical design and manufacturing expertise.

Haltom City, TX

NCC Die Casting LLC, based in Haltom City, TX, specializes in providing comprehensive die casting services. The company manufactures precision metal components for various industrial applications, including the automotive sector, utilizing its advanced US-based facilities and expertise.

Sylacauga, AL

Nemak, based in Sylacauga, AL, is an automotive casting company specializing in lightweight casted components and foundry alloy aluminum products for the automotive industry. The company recently acquired GF Casting Solutions' automotive business to expand capabilities, and emphasizes sustainable production by incorporating post-consumer scrap into its processes.

Warsaw, IN

Texmo Blank manufactures precision investment castings from steel, aluminum, cobalt, and nickel. With US facilities, they serve automotive, aerospace, and industrial markets. The company holds IATF 16949 and ISO 9001 certifications, providing rapid prototyping, advanced tooling, and quick turnaround for complex geometries.

Mira Loma, CA

Based in Mira Loma, CA, Aluminum Die Casting specializes in high-quality die casting, tooling, CNC machining, and finishing services. Since 1950, the company has provided optimized part solutions for the automotive, military/aerospace, medical, and marine industries.

Sylacauga, AL

Based in Sylacauga, AL, American Foam Cast specializes in casting large, rugged aluminum components. The company serves heavy trucking and related equipment manufacturers, providing durable castings for industrial applications.

Centracore, LLC offers diverse casting solutions for global OEM and Tier One customers across North America. Capabilities include aluminum sand, permanent mold, ductile iron, gray iron, and high-pressure die casting. They also provide precision machining and assembly for chassis, powertrain, driveline, and structural components, along with rapid prototyping.

Houston, TX

Based in Houston, TX, Coastal Foundry Company specializes in non-ferrous alloy castings, including aluminum, brass, and bronze. With over 50 years of experience, they serve automotive, energy, and industrial manufacturers. They utilize Green Sand and No-Bake molding, offering finishing, heat treating, and machining services.

San Antonio, TX

Based in San Antonio, TX, Mentco, Inc. is a precision investment casting company founded in 1974. They provide high-quality casting services, specializing in intricate metal components. With decades of experience, Mentco supports industrial clients across various sectors, including the automotive industry, with their advanced casting capabilities.

Sun Valley, CA

Based in Sun Valley, CA, KenWalt Die Casting Company specializes in high-quality aluminum and zinc die casting, providing precision-engineered components. They offer comprehensive services including CNC machining, metal finishing, and assembly. The ISO 9001 certified company serves the transportation, aerospace, defense, and medical device industries.

Modesto, CA

Based in Modesto, CA, Lamar Tool & Die Casting, Inc. is a family-owned company specializing in precision tool design, manufacturing, and comprehensive die casting services. They offer aluminum and zinc die casting, extensive CNC machining, and in-house finishing, serving the automotive, agriculture, medical, and industrial sectors.

Bettendorf, IA

LeClaire Manufacturing provides aluminum castings, specializing in automotive engine components like engine blocks and cylinder heads. They offer green sand and permanent mold casting, complex CNC machining, and tool & die manufacturing. The company is dedicated to quality, consistent, porosity-free castings, and reliable delivery.

Springfield, OH

Based in Springfield, OH, Millat Industries is an ISO/IATF 16949 certified provider of aluminum die casting services. They specialize in high-pressure die casting, offering prototype development and high-volume production for domestic and foreign automotive OEMs like Ford and Honda. Capabilities also include precision machining and assembly.

Milwaukee, WI

Based in Milwaukee, WI, Milwaukee Precision Casting, Inc. specializes in investment casting services. The company has extensive experience serving the automotive aftermarket, providing precision cast components for the secondary market of the automotive industry and other industrial applications.

Corsicana, TX

Based in Corsicana, TX, Oil City Iron Works, Inc. is an American foundry, pattern-maker, and CNC machine shop. Specializing in gray and ductile iron castings, they offer comprehensive manufacturing solutions from prototyping to production, including precision machining, pattern design, metal coating, and heat treatment.

Clinton, SC

Patriot Foundry & Castings specializes in nonferrous sand castings, producing components from bronze, aluminum, and zinc-based alloys. Serving the automotive industry, the company offers over 20 years of experience. It delivers dimensionally accurate and consistent parts through established production methods for client applications.

Based in Vancouver, WA, Precise Cast specializes in rapid prototyping and precision sand casting. They produce automotive prototype car parts, cylinder heads, and sand-cast engine blocks using materials like aluminum and magnesium. The company delivers high-quality cast components for various industrial applications.

Waukesha, WI

Based in Waukesha, WI, R2 Quality Castings specializes in producing custom vehicle parts. The company offers casting services for a wide range of applications, focusing on delivering fast lead times and competitive pricing without compromising quality.

Garner, NC

Based in Garner, NC, Sigma Engineered Solutions directly provides precision casting services. They regularly work with aluminum, copper, ductile, malleable, and gray iron for sand casting applications. Serving diverse industries like automotive and telecom, the company also offers metal stamping and Swiss CNC machining.

Wichita Falls, TX

Taylor Foundry Company, based in Wichita Falls, TX, specializes in manufacturing high-quality gray iron castings. Established in 1925, the company serves diverse industrial markets, including agricultural, construction, and municipal sectors, providing durable casting solutions for various applications.

Lufkin, TX

Based in Lufkin, TX, Texas Metal Casting operates a full-service foundry specializing in high-quality non-ferrous and stainless steel custom castings. Their vertically integrated facilities include engineering, pattern shop, foundry, inspection, and machining services. The company produces raw, proof-machined, or fully machined cast parts from customer designs for diverse industrial needs.

Bingham Farms, MI

Based in Bingham Farms, MI, TFG USA specializes in manufacturing premium metal parts. Capabilities include aluminum die casting, metal stamping, metal forging, and precision CNC machining. The company provides industry expertise and a global manufacturing network to produce custom components for diverse clients requiring quality metal solutions, including automotive parts.

Lewisburg, TN

Walker Die Casting, based in Lewisburg, TN, specializes in manufacturing high-quality aluminum die cast parts. Established in 1958, the company operates with powerful machines, including those up to 3500 tons, to produce durable components. They are a long-standing member of the Automotive and Commercial Castings industry, providing custom solutions.

Waupaca, WI

Based in Waupaca, WI, Waupaca Foundry manufactures high-quality gray iron, ductile iron, austempered ductile iron, and compacted graphite iron castings. They provide solutions for automotive engine components, commercial vehicles, and off-highway industries, focusing on cost reduction and lightweighting targets.

Hollister, CA

American Casting Company, based in Hollister, CA, specializes in providing investment castings. The company focuses on delivering high-quality components with efficient lead times for various industrial applications, including the automotive sector.

Magnesium USA manufactures magnesium extrusions and low-pressure die-castings, serving the automotive, aerospace, and defense sectors. The company offers alloy selection, prototype development, and mass production from its 55,000 sq.ft. U.S. manufacturing facility. Capabilities include milling, grinding, machining, and various coatings for turn-key component supply.

Oxford, MI

Based in Oxford, MI, RLM Industries is an investment casting foundry specializing in complex, high-precision metal components. They provide cutting-edge casting processes to transform designs into finished parts for various sectors, including the automotive, aerospace, defense, and medical industries.

SEI Castings, based in California, specializes in providing standard and custom aluminum and zinc die cast products. The company offers comprehensive casting solutions suitable for various industrial applications, including automotive components. They focus on delivering precision-engineered parts to meet client specifications.

Proterial America, Ltd. supplies specialized automotive castings for the automotive industry. The company leverages advanced materials and extensive R&D to provide high-performance products supporting next-generation vehicle development and fuel economy solutions. Their automotive castings are suitable for suspension and driving system components.

Vernon, CA

Based in Vernon, CA, West Coast Foundry, LLC specializes in custom cast components poured from a wide variety of alloys. They provide high-value components, including corrosion-resistant and structural alloys, for OEMs across diverse sectors such as US Navy ships, rocket engines, medical equipment, and automotive engines.

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How to Choose a Company

  • Verify the supplier's IATF 16949 certification is active and their scope covers the specific casting process (e.g., HPDC, permanent mold, sand casting) and materials (e.g., aluminum, ductile iron) you require for automotive applications. An ISO 9001 cert alone is insufficient for this demanding industry.
  • Assess their in-house tooling capabilities and expertise in gating and riser system design. Poor tool design is a primary cause of casting defects like shrinkage, cold shuts, and excessive porosity, leading to expensive rework and delayed PPAP approval.
  • Scrutinize their quality lab capabilities, specifically for non-destructive testing (NDT) methods like X-ray inspection for internal porosity, CMM for dimensional accuracy, and Spectrometer for material composition verification. For ferrous castings, inquire about Magnaflux capabilities.
  • Evaluate their experience with PPAP (Production Part Approval Process) submissions, especially for the specific level you need (e.g., Level 3). A common red flag is a supplier who downplays the rigor of PPAP or lacks a clear process for compiling the required documentation (control plans, FMEAs, MSA studies, etc.).
  • Investigate their typical yield rates and scrap history for similar complex automotive castings. Low yield rates can indicate unstable processes, leading to inconsistent quality, late deliveries, and higher total costs even if the piece price seems attractive.

Supplier Types at a Glance

TypeBest ForTypical MOQ
High-Pressure Die Casting (HPDC) SpecialistHigh-volume, thin-walled, intricate aluminum or magnesium parts (e.g., transmission cases, engine blocks, structural components for lightweighting).50,000+ units/year
Low-Pressure/Gravity Permanent Mold FoundryMedium-to-high volume structural aluminum components, wheels, knuckles, or battery enclosures requiring superior mechanical properties and heat treatment.10,000 - 100,000 units/year
Ductile/Gray Iron FoundryHeavy-duty, high-strength applications like brake calipers, differential housings, suspension components, or engine blocks for truck/commercial vehicles.5,000 - 50,000+ units/year
Precision Sand Casting ShopPrototypes, low-volume specialty components, or parts with very complex internal passages (e.g., intake manifolds, specialty housings) where tooling cost is a primary concern.100 - 5,000 units/year

Frequently Asked Questions

What is the primary difference between HPDC and LPDC for automotive components?

High-Pressure Die Casting (HPDC) is ideal for high-volume, thin-walled, intricate aluminum parts requiring excellent surface finish, like transmission housings or engine blocks, but typically has higher tooling costs and can trap gas, potentially leading to porosity issues that limit weldability or heat treatment. Low-Pressure Die Casting (LPDC) involves lower pressures, slower fill rates, and typically produces denser, stronger castings with less porosity, making it suitable for structural components or wheels that require heat treatment and superior mechanical properties, albeit often with thicker walls and lower production rates than HPDC.

How critical is porosity control in automotive castings, and what inspection methods are used?

Porosity control is extremely critical in automotive castings, especially for structural, safety-critical, or pressure-containing components. Excessive porosity, whether gas-induced or shrinkage-related, can significantly reduce mechanical strength, fatigue life, and leak resistance. Common inspection methods include real-time X-ray (radiography) for internal defects, fluorescent penetrant inspection (FPI) for surface-breaking discontinuities, and sometimes even destructive sectioning for micro-porosity analysis to meet stringent OEM specifications.

Why is IATF 16949 a mandatory certification for automotive casting suppliers?

IATF 16949 is a quality management system standard specifically developed for the automotive industry. It builds upon ISO 9001 with additional requirements unique to automotive, focusing heavily on defect prevention, reduction of variation and waste, and continuous improvement throughout the supply chain. For casting companies, it mandates robust processes for APQP, PPAP, FMEA, control plans, and customer-specific requirements, ensuring consistent quality and reliability of components crucial for vehicle safety and performance. Without it, most automotive OEMs or Tier 1 suppliers will not even consider a foundry for production parts.

When should I consider sand casting versus permanent mold for automotive prototype or low-volume parts?

Sand casting is generally preferred for initial prototypes and very low-volume automotive parts, especially for complex geometries, very large parts, or when quick design iterations are needed, as tooling costs (patterns) are significantly lower and lead times shorter. However, sand castings typically have rougher surface finishes, wider dimensional tolerances, and higher porosity. Permanent mold (or gravity die casting) offers better surface finish, tighter tolerances, superior mechanical properties (due to faster cooling and denser grain structure), and is more suitable for medium-volume production or when prototypes need to closely replicate production part characteristics and performance.

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