OEM Investment Casting Stainless Steel Automotive/Industrial Parts

Working with seasoned and reliable partners, Junying develops an extensive range of precision components supporting different industries and meeting varying requirements. We offer custom investing casting parts for automotive, electronics, aerospace, food, engineering equipment, machinery, etc. Common stainless steel investment castings such as pump impellers, casings, covers, engine parts, transmission parts, axle assemblies, safety fittings, control valves, rotary plug valves, rock handles, cams, brackets, hydraulic machine parts, connectors, and more OEM metal castings are all available at Junying with a short lead time and affordable prices. The manufacturing facilities and cast products will be thoroughly tested using advanced testing and measurement equipment to ensure their functions and specifications. We are always trying our best to deliver the best-quality investment castings and machined components. If you require complex or intricate components for defense and medical applications, such as thin-wall castings, we can also manufacture casting parts according to your design and ensure that the products in line with industry standards.

Is Stainless Steel Good for Investment Casting?

Investment casting, also known as precision casting, is a near-net-shape casting process that involves creating a wax model or pattern, coating it with a refractory ceramic material to form a mold, melting out the wax, and then pouring molten metal into the mold to produce a casting part. Stainless steel, with its excellent melting and flowing properties, is very suitable for the investment casting process.

Types and Grades of Stainless Steel Used in Investment Casting

Various types of stainless steels are suitable for the investment casting process, including the Austenitic, Ferritic, Martensitic, Duplex, and Precipitation Hardening Stainless Steels. Choose the best grade or alloy based on the material properties and final applications. Here are some commonly used investment casting stainless steel grades.

• SS304: Widely accepted in the food industry as the standard for cleanliness and corrosion resistance, it is also used in medical, mining, and petrochemical applications.
• SS316: Known for its superior corrosion resistance, it is suitable for marine environments, automotive, petrochemical, and food & dairy industries.
• SS410 & SS416: High-strength and highly machinable, they are used in automotive, machine tool, and food & dairy applications.
• 17-4PH: The strongest in the stainless steel family, it is used for parts that cannot bend, such as military, medical, and machine tool components.
• 15-5: High strength, hardness, and corrosion resistance, commonly hardened through heat treatment. It is used in food processing, pumps & valves, and oil & gas industries.
• SS420: A martensitic alloy with high hardness, it is used in petrochemical, pump & valve applications.

Stainless Steel Investment Casting Process

Wax pattern creation → Shell building → Dewaxing and firing → Metal pouring → Cooling → Post-casting processing → Quality inspection

1. Wax Pattern Creation: Microcrystalline wax blends are used to create precise patterns through high-precision injection into molds.
2. Shell Building: A ceramic shell is built layer by layer by dipping the wax pattern into a silica-based slurry, with each layer hardened before the next is applied.
3. Dewaxing and Firing: The ceramic shell is placed in a steam autoclave to remove wax, followed by firing at high temperatures to ensure mold purity.
4. Metal Pouring: Molten stainless steel is poured into the mold under vacuum conditions to minimize gas porosity, with strict temperature controls to prevent defects.
5. Cooling: The molten steel cools and solidifies within the mold, where controlled cooling influences the final casting’s quality and properties.
6. Post-Casting Processing: The ceramic shell is removed, and the casting undergoes heat treatment, surface finishing, and dimensional inspection to enhance properties and ensure specifications.
7. Quality Inspection: The casting is thoroughly inspected using non-destructive testing and dimensional measurements to ensure it meets quality standards.

Advantages of Our OEM Investment Casting Stainless Steel Automotive/Industrial Parts

• OEM investment casting parts for a wide variety of industries
• Perfect surface finish and accurate sizes
• Reduced cost, simplified process
• Flexible range of sizes and materials

Specifications of OEM Investment Casting Stainless Steel Automotive/Industrial Parts