Are you looking for reliable Aluminum Gravity Die Casting Manufacturers for structural components, machinery housings, automotive parts, or other custom aluminum products? Do you need a foundry that can meet your requirements for alloy selection, dimensional accuracy, heat treatment, and machining? Or are you comparing suppliers for tooling investment, production volumes, and long-term OEM manufacturing?
If the answer is yes, then comparing manufacturers by their actual casting processes, engineering support, and quality-control capabilities is essential. Gravity die casting, also known as permanent mold casting, uses reusable molds and gravity to fill the mold cavity. The process can suit a range of aluminum components where repeatability, surface finish, and mechanical properties matter. Below, we present 10 Aluminum Gravity Die Casting Manufacturers to help you compare potential partners for your project.
Quick Navigation
- Le Sueur Incorporated
- Watry Industries, LLC
- Ningbo FUERD Machinery Co., Ltd. (FUERD)
- ALCAST Company
- S&B Aluminum Foundry, Inc.
- Ward Aluminum Company
- Stahl Specialty Company
- Premier Aluminum
- Melling Foundry
- Ermak Foundry & Machining, Inc.
- Key Factors That Affect Your Price
- FAQs
- Conclusion
1. Le Sueur Incorporated
Website: https://www.lesueurinc.com/gravity-pour
Headquarters: Le Sueur Incorporated is a US-based casting manufacturer with gravity-pour permanent mold capabilities. Its official website describes gravity and tilt-pour casting as established parts of its aluminum casting operations.
Core Products and Services: The company offers gravity-pour and tilt-pour permanent mold casting, including semi-permanent mold casting using sand cores for internal features that cannot be formed by the metal mold alone. Its published capabilities include aluminum alloys such as A356, 356, 319, 333, C355, 355, and 413. It also provides heat treatment, machining, finishing, metallurgical testing, and nondestructive testing.
Why Consider This Manufacturer: Its combination of permanent mold casting, core-making options, in-house heat treatment, and inspection capabilities can be relevant to parts requiring complex geometry or pressure-tight and leak-tight performance. The company also describes using casting simulation to assess filling and process design.
Best Suited For: Buyers sourcing engineered aluminum components such as housings, oil pans, hydraulic parts, compressor bodies, and other industrial components where casting integrity and follow-on processing are important.
Before Purchasing: Share the component drawing, alloy and heat-treatment requirements, pressure or leakage criteria, critical dimensions, and expected volumes. Confirm which inspection methods and acceptance criteria can be applied to the specific part.
2. Watry Industries, LLC
Website: https://watry.com/
Headquarters: Watry Industries is a US aluminum foundry specializing in permanent mold casting. Its website describes a production model that combines casting with engineering support and downstream services.
Core Products and Services: Its capabilities include permanent mold, semi-permanent mold, tilt-pour and reverse tilt-pour casting. Watry also lists heat treatment, CNC machining, surface finishing, powder coating, assembly, and casting inspection. Its published quality activities include X-ray inspection, chemical analysis, dimensional measurement, and mechanical testing.
Why Consider This Manufacturer: The company is worth considering when a project needs more than basic casting. Design-for-manufacturing support, permanent steel molds, and downstream machining can help buyers coordinate component production and finishing with one manufacturer.
Best Suited For: OEMs in sectors such as automotive, marine, agriculture, power generation, hydraulics, appliances, and industrial equipment seeking repeatable aluminum components.
Before Purchasing: Confirm that the proposed casting method matches your part design and quantity. Ask about alloy availability, dimensional tolerances, annual volume, inspection plans, tooling ownership, and the scope of any required secondary operations.
3. Ningbo FUERD Machinery Co., Ltd. (FUERD)
Website: https://www.fuerdcasting.com/
Headquarters: FUERD is a custom aluminum casting manufacturer based in Ningbo, China. Its official website describes integrated production from mold development and casting to CNC machining, inspection, and surface finishing for customized OEM components.
Core Products and Services: FUERD offers aluminum gravity casting, low-pressure die casting, custom mold development, and CNC precision machining. Its gravity casting page lists alloy options including A356-T6, A357, ZL101, ZL102, and other grades according to project requirements. The company also describes sand-core solutions for hollow or internally complex castings, heat-treatment options for suitable alloys, and finishing services.
Why Consider This Manufacturer: FUERD is a candidate for buyers who want to evaluate gravity casting alongside other aluminum casting processes. Its integrated workflow can support projects that require tooling, casting, machining, and finishing to be coordinated. Its published gravity casting information discusses large, thick-walled and internally complex parts, so buyers with such geometries can submit drawings for a process review.
Best Suited For: OEMs, equipment manufacturers, and sourcing teams looking for customized aluminum parts for industrial machinery, automotive-related applications, hydraulic systems, and structural assemblies. Suitability depends on the specific part design, alloy, and production requirements.
Before Purchasing: Provide a 2D drawing or 3D model, target alloy and heat treatment, estimated part size and weight, critical tolerances, required machining, surface finish, quantity, and delivery destination. Ask FUERD to confirm the recommended process, inspection plan, tooling arrangement, sample approval process, and production lead time.
4. ALCAST Company
Website: https://alcastcompany.com/
Headquarters: ALCAST Company is a US-based aluminum casting manufacturer supplying custom components for a range of production volumes.
Core Products and Services: ALCAST specializes in permanent mold, low-pressure, semi-permanent mold, tilt-pour, and sand casting. Services include CNC machining, heat treatment, powder coating, and other finishing. Its castings range from under one pound to over 350 pounds.
Why Consider This Manufacturer: Its casting processes and in-house services allow buyers to source cast and machined components from one supplier. The company also highlights ISO 9001:2015 certification.
Best Suited For: Buyers seeking aluminum castings with optional machining, heat treatment, and finishing.
Before Purchasing: Confirm alloy, process, dimensions, quantity, finishing, and inspection requirements. Request a quote based on the complete drawing.
5. S&B Aluminum Foundry, Inc.
Website: https://sbafoundry.com/
Headquarters: S&B Aluminum Foundry is located in West Valley City, Utah, USA, and provides casting, machining, and heat-treatment services.
Core Products and Services: The foundry uses permanent mold gravity casting and commonly works with Aluminum 356.1. Its molds are made from steel or cast iron, and its services include T5/T6 heat treatment and machining.
Why Consider This Manufacturer: Its casting, heat treatment, and machining services can simplify production coordination for finished components. The company supports both short and longer production runs.
Best Suited For: Buyers needing permanent mold aluminum castings with machining or heat treatment.
Before Purchasing: Confirm alloy, heat treatment, tolerances, and machining scope. Compare quotes based on the finished part.
6. Ward Aluminum Company
Website: https://www.permanentmoldcasting.com/webapp/p/447/ward-aluminum-casting
Headquarters: Ward Aluminum Company operates a permanent mold aluminum casting division in Fort Wayne, Indiana, USA. Services include casting, tooling, heat treatment, and machining.
Core Products and Services: Ward produces commercial and heat-treatable aluminum castings, from prototypes to higher-volume orders. Its equipment includes gravity and tilt-pour machines, alongside sand molding, core-making, cleaning, and finishing capabilities.
Why Consider This Manufacturer: Its foundry infrastructure can support projects requiring tooling, casting, heat treatment, and machining. Buyers can discuss whether permanent mold or another process best fits their component.
Best Suited For: OEMs needing aluminum castings in different quantities, including parts requiring machining or heat treatment.
Before Purchasing: Provide the drawing, alloy, quantity, tolerances, and finishing requirements. Confirm tooling costs, ownership, sampling, and inspection documents.
7. Stahl Specialty Company
Website: https://stahlspecialty.com/
Headquarters: Stahl Specialty Company is a US aluminum casting manufacturer specializing in permanent mold and semi-permanent mold casting.
Core Products and Services: Its capabilities include static-pour permanent mold casting, core making, engineering, CNC machining, heat treatment, and testing.
Why Consider This Manufacturer: Its engineering and production capabilities can help buyers evaluate mold design, cores, solidification, and secondary processing for complex components.
Best Suited For: Buyers needing aluminum castings with core-making, machining, heat treatment, or testing.
Before Purchasing: Confirm process, alloy, tooling, volume, and inspection requirements. Define acceptance criteria for safety-critical or pressure-containing parts.
8. Premier Aluminum
Website: https://premieraluminum.com/
Headquarters: Premier Aluminum is based in Racine, Wisconsin, USA, and provides aluminum casting, tooling, machining, finishing, and testing.
Core Products and Services: Its processes include permanent mold, low-pressure permanent mold, semi-permanent mold, and tilt-pour casting. Additional services include CNC machining, coating, pressure testing, and helium leak testing.
Why Consider This Manufacturer: Premier may suit projects requiring casting, machining, finishing, and leak testing. Buyers should confirm the appropriate process for each component.
Best Suited For: Buyers sourcing aluminum components for industrial, automotive, medical, electrical, and transportation applications.
Before Purchasing: Specify gravity or low-pressure casting and confirm alloy, part weight, volume, machining, and testing requirements.
9. Melling Foundry
Website: https://www.mellingfoundry.com/
Headquarters: Melling Foundry is an engineered aluminum casting manufacturer offering green sand and permanent mold casting.
Core Products and Services: Its permanent mold capabilities focus on complex aluminum castings, with engineering, simulation, and manufacturing support.
Why Consider This Manufacturer: Engineering and simulation can help assess manufacturability before tooling investment. Confirm process suitability and secondary operations for your component.
Best Suited For: OEMs evaluating permanent mold casting for engineered aluminum parts.
Before Purchasing: Provide drawings, alloy, tolerances, volume, and finishing needs. Ask how the proposed process and critical features will be inspected.
10. Ermak Foundry & Machining, Inc.
Website: https://ermak.com/
Headquarters: Ermak Foundry & Machining is a US nonferrous foundry based in Minnesota, offering aluminum casting, prototyping, machining, heat treatment, and finishing.
Core Products and Services: Its capabilities include permanent mold and sand casting, with alloy options such as A356, 356, 333, C355, 319, 535, and 713. Additional services include machining, painting, powder coating, anodizing, and assembly.
Why Consider This Manufacturer: Its range of casting processes and post-casting services can help buyers compare process options and consolidate finishing work.
Best Suited For: Buyers sourcing aluminum and other nonferrous castings for industrial applications.
Before Purchasing: Confirm that permanent mold casting is suitable for your design, and specify alloy, volume, tooling, machining, and finish requirements.
Key Factors That Affect Your Price
Aluminum gravity die casting costs depend on tooling, alloy, part design, order volume, inspection, and finishing. Compare quotations based on the complete finished-part requirements.
- Tooling: Mold size, cores, slides, undercuts, and cavity complexity affect tooling costs.
- Alloy and Heat Treatment: Confirm alloy grade, required properties, and any T5/T6 treatment.
- Part Size and Geometry: Size, wall thickness, internal features, and tolerances affect casting and machining costs.
- Order Volume: Tooling costs vary by volume. Compare prototype and production pricing.
- Machining and Finishing: Specify required machining, surface treatments, assembly, and tolerances.
- Inspection and Testing: Quote dimensional checks, material tests, X-ray, or leak testing as required.
- Yield and Quality: Discuss controls for porosity, shrinkage, defects, and rework.
- Packaging and Logistics: Compare packaging, shipping, duties, and total landed costs.
- Engineering Changes: Include mold modifications, sample trials, and validation in project planning.
FAQs – Aluminum Gravity Die Casting Manufacturers
1. What is aluminum gravity die casting?
It uses gravity to fill a reusable metal mold with molten aluminum. Unlike high-pressure die casting, it does not inject metal under high pressure. Process suitability depends on part design, alloy, quality, and cost.
2. What is the difference between gravity die casting and sand casting?
Gravity die casting uses a reusable metal mold and can offer repeatability and good surface finish. Sand casting may suit some large, complex, or low-volume parts. Compare options using your design and production volume.
3. Which aluminum alloys can be used for gravity die casting?
Common options include A356 and, depending on the foundry, 319, 333, and C355. Confirm alloy standards, chemistry, heat treatment, and mechanical properties with the supplier.
4. Can gravity cast aluminum parts be heat treated?
Yes, suitable alloys can be heat treated. Results depend on alloy and casting quality. Specify T5/T6 requirements and request supporting test reports.
5. What information should I provide when requesting a quotation?
Provide drawings or a 3D model, alloy, dimensions, quantity, tolerances, machining and finish requirements, inspection criteria, and delivery destination.
6. Is permanent mold tooling suitable for small orders?
Tooling costs must be weighed against expected volume. For small runs, compare prototype or sand casting with permanent mold tooling; request sample and production pricing.
7. What quality documents should buyers request?
Request relevant material, mechanical, dimensional, heat-treatment, and nondestructive testing reports. Define acceptance criteria in advance; quality-system certification alone does not guarantee part compliance.
8. Can a gravity die casting manufacturer provide CNC machining and surface finishing?
Many foundries offer machining and finishing, but services vary. Confirm available operations, subcontracting, and final inspection requirements.
9. How should I compare quotations from different manufacturers?
Compare the same alloy, drawing, volume, tooling, heat treatment, machining, inspection, packaging, and delivery terms. Check exclusions, lead times, and tooling ownership.
10. How can I select the right manufacturer for a custom aluminum casting project?
Compare process suitability, quality, technical support, machining, scalability, and total cost. Request a drawing review before selecting a supplier.
Conclusion
Selecting the right aluminum gravity die casting manufacturer requires more than comparing unit prices. Evaluate each supplier's casting capabilities, alloy options, tooling experience, quality-control procedures, machining services, production capacity, and delivery terms against your project requirements.
For custom aluminum components, FUERD offers gravity casting, mold development, sand-core solutions, CNC machining, and surface finishing. Share your drawings, alloy requirements, quantity, tolerances, and inspection criteria to help determine whether its capabilities fit your project.
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