Custom Cast Stainless Steel Parts Manufacturer
Cast Stainless Steel Parts
China Simis Company is a dedicated OEM custom manufacturer of high-precision Casting Stainless Steel Components. Stainless steel is chosen where the operating environment demands superior resistance to rust, oxidation, chemical attack, and extreme temperatures (high or cryogenic), or where strict hygiene and non-contamination standards are required (food, medical).
Our cast stainless steel parts are crucial for demanding applications in fluid handling, processing machinery, and marine environments. We manage the complex metallurgy across all five major stainless families—Austenitic, Ferritic, Martensitic, Duplex, and PH (Precipitation-Hardening)—to ensure the precise chemistry for optimal corrosion resistance and mechanical properties. We via Silica Sol Investment Casting (Lost Wax) and Resin Sand Casting. Investment Casting Process for the production of intricate geometries with excellent dimensional accuracy and superior surface finishes; Resin Sand Casting Process for the production of Large Stainless Steel Castings. By adhering to international standards such as ASTM A351, DIN/EN 10213, and JIS, Simis ensures that every component—from sanitary food-grade valves to heavy-duty marine hardware—meets the highest quality benchmarks for reliability and longevity.
What are the casting processes used for stainless steel castings?
The selection of the casting process for stainless steel castings depends on factors such as the size of the casting and the required surface finish, The surface finish of stainless steel castings is directly linked to their corrosion resistance—surface roughness, porosity, or micro-cracks can accelerate pitting and crevice corrosion in aggressive environments. As a professional OEM custom manufacturer, China Simis Company prioritizes precision casting processes that minimize these defects, ensuring optimal surface integrity and mechanical performance. These processes are key to extending the service life of stainless steel components in harsh working conditions such as marine immersion, chemical exposure, and sanitary food/medical processing.
| Manufacturing Process | Component Focus | Material Standards | Key Advantage for Stainless Steel |
| Silica Sol Investment Casting | Intricate valves, impellers, medical tools, and architectural fittings. | ASTM A351 (CF8/CF8M) | 1.4408. | Surface Excellence. Provides the best "near-net-shape" finish (Ra 3.2), minimizing the need for expensive secondary machining. |
| Resin Sand Casting | Large-scale pump housings, marine propellers, and industrial frames. | ASTM A743/A744 | EN 10213. | Scale & Durability. Ideal for heavy-duty, thick-walled stainless steel components that exceed the size limits of investment casting. |
| Precision CNC Machining | Threaded ports, sealing surfaces, and precision bores. | All Stainless Alloys. | Functional Precision. Achieves sub-micron tolerances for critical mating parts, ensuring leak-free performance in fluid systems. |
| Solution Annealing (Heat Treatment) | All Austenitic and Duplex stainless steel castings. | International Standards. | Corrosion Restoration. Eliminates carbide precipitation to restore maximum corrosion resistance after the casting process. |
| Passivation & Pickling | All finished stainless steel components. | Industry Standards. | Surface Protection. Removes surface iron contaminants and enhances the natural chromium-oxide protective layer. |
| Mirror / Satin Polishing | Architectural hardware, food-grade and medical components. | Ra < 0.2 (Mirror). | Aesthetic & Hygiene. Provides a flawless, easy-to-clean surface required for sanitary and high-end decorative applications. |
What Materials Are Available for Stainless Steel Castings?
Stainless steel is categorized by its crystalline structure, which dictates its core properties including magnetic response, tensile strength, yield strength, and corrosion resistance. All grades supplied by China Simis Company strictly adhere to international casting specifications such as ASTM A743, ASTM A351, and EN 10213. This strict compliance ensures that each stainless steel grade can be precisely matched to the specific performance requirements of diverse industrial applications, from hygiene-critical food processing to corrosion-prone offshore environments.
| Stainless Family | Core Performance Attributes | Primary Application |
| Austenitic Stainless Steel (304/316/316L) | Superior Corrosion Resistance and high ductility. Non-magnetic. | Food & Medical equipment, chemical valves, and marine hardware. |
| Duplex Stainless Steel (2205/2507) | Extreme Strength & Pitting Resistance. Combines Ferritic and Austenitic traits. | Offshore Oil & Gas, chemical tankers, and desalination plants. |
| Martensitic Stainless Steel (410/420) | High Strength & Hardness. Can be heat-treated for wear resistance. | Cutlery, turbine blades, and high-wear mechanical components. |
| Precipitation Hardening Stainless Steel (17-4PH) | Exceptional strength through heat treatment while maintaining good rust resistance. | Aerospace components, high-load shafts, and specialized fasteners. |
What Quality Assurance and Contamination Control Measures Apply to Stainless Steel Casting?
For stainless steel, contamination and chemistry control are critical, as small deviations can severely compromise corrosion performance. The following strict control measures ensure that each stainless steel casting meets the highest quality standards.
·Chemistry Control:
Precise measurement of chromium (Cr), nickel (Ni), and molybdenum (Mo) content in every heat is mandatory to ensure the correct microstructure and specified corrosion resistance.
·Nondestructive Testing (NDT):
Liquid Penetrant Inspection (LPI) is frequently used to detect pinhole porosity or fine surface fissures that could act as initiation sites for corrosion.
·Intergranular Corrosion Control:
Strict control over carbon content (L grades like CF3 or CF3M) or the use of stabilizing elements is necessary to prevent sensitization and ensure resistance to intergranular corrosion after welding or heat treatment.
·Surface Finish Verification:
Surface roughness measurements (Ra) are often performed, particularly for food/medical grades, to confirm the smooth finish necessary for hygiene and cleanability.
What Are the Application Fields of Custom Casting Stainless Steel Parts?
Custom casting stainless steel parts are widely used in many industries, including but not limited to the following sectors, where their corrosion resistance and mechanical strength play a key role in equipment operation.
| Industrial Sector | Typical Casting Stainless Steel Components |
| Food & Beverage | Sanitary pump housings, mixing blades, valve bodies, conveyor components, filling nozzles, and meat processing equipment parts. |
| Pharmaceutical & Medical | Surgical instrument handles, orthopedic implant components, autoclave hardware, centrifuge parts, and laboratory equipment fittings. |
| Marine & Offshore | Propellers, cleats, deck hardware, hinges, anchor rollers, saltwater pump impellers, and underwater sensor housings. |
| Chemical & Petrochemical | Acid-resistant valve bodies, flow meters, heat exchanger connectors, agitators, and high-pressure manifold blocks. |
| Oil & Gas | Downhole drilling tools, blowout preventer (BOP) internal parts, subsea connectors, and refinery pipe fittings. |
| Energy & Power Gen | Gas turbine blades, solar tracker mounting hardware, nuclear valve components, and hydroelectric gate fittings. |
| Architecture & Construction | Glass clamps, spider fittings for curtain walls, Stair handrail brackets, standoffs, signage mounts, and luxury door hardware. |
| Aerospace | Fuel system connectors, turbine engine housings, aircraft brackets. |
| Automotive & Racing | Turbocharger housings, exhaust manifold collectors, high-performance fuel rails, and decorative trim components. |
| Environmental & Water | Desalination plant pump parts, wastewater treatment aerators, filtration system manifolds, and UV sterilization housings. |
| Textile & Pulp/Paper | Dyeing machine components, paper pulp refiner plates, and chemical sprayer nozzles. |
| Mining & Heavy Industry | Specialized sensor protectors, high-corrosion slurry pump parts, and precision industrial fasteners. |
What Are the Advantages of Simis OEM Custom Stainless Steel Castings?
Partnering with Simis ensures material compliance, certified corrosion resistance, and high-accuracy surface finish. The following core advantages make us the preferred supplier for customers in various industries.
·Investment Casting Expertise:
We specialize in the precise Investment Casting of all stainless families, providing the smooth, near-net shape surface finish crucial for maximizing corrosion resistance and minimizing machining costs.
·Metallurgical Assurance:
We provide full chemical certification and control the necessary heat treatment (e.g., Solution Annealing) to ensure the casting achieves the highest possible resistance to pitting and crevice corrosion.
·Duplex and PH Capability:
We routinely handle complex grades like Duplex and PH stainless, delivering materials that provide superior strength and stress-corrosion cracking resistance where standard Austenitics fail.
·Cleanliness and Compliance:
We adhere to the strict surface quality and NDT protocols required for hygiene-critical sectors like food and medical machinery.
How to Get a Quote for Custom Stainless Steel Casting Parts?
China Simis Company provides world-class Stainless Steel Casting Parts (Steel Casting Services) tailored to your specific performance and aesthetic requirements. From high-purity Food-Grade components to rugged Marine hardware, we deliver precision-engineered solutions that stand the test of time. To obtain a detailed and accurate quotation for your custom stainless steel casting project, please submit the following key technical documents and specifications to our professional engineering department: 2D technical drawings or 3D models of the component, specific requirements for ASTM/AISI grade (e.g., CF8M, CD3MN), detailed description of the corrosion environment the component will face, required surface finish standard (Ra value), mandatory NDT inspection level, and expected annual production volume. Our technical team will conduct a comprehensive feasibility analysis and cost evaluation based on the provided information, and provide a quotation package including unit price, tooling investment, production lead time, quality control plan and delivery terms.
