If you're considering sourcing stainless steel castings and want to find a manufacturer that fits your project requirements, this guide is designed to help you.
We've put together a list of standout stainless steel casting manufacturers from the United States, China, and Europe. For each company, we provide a snapshot of when it was established, its headquarters, stainless steel casting products, production capabilities, materials, industries served, and customization capabilities. This makes it easier to compare suppliers based on the type of stainless steel casting, part size, production volume, engineering requirements, and application.
Top 10 Stainless Steel Casting Manufacturers |
1. Milwaukee Precision Casting, Inc
Established: 1993
Headquarters: Milwaukee, Wisconsin, United States
Main Products:
- Food-processing stainless steel cast components
- Corrosion-resistant pump and valve castings
- Hardenable stainless steel machinery castings
- Precision stainless steel cast components for medical and industrial equipment
Company Profile
Milwaukee Precision Casting, Inc. has been producing precision investment castings since 1993 and has built its stainless steel casting business around components that require corrosion resistance, dimensional accuracy, and complex geometry. Its current capabilities include stainless steel, aluminum, carbon steel, bronze, tool steel, brass and copper investment castings, with stainless steel remaining an important part of its offering. The company works with stainless grades including 304, 316, 316L, 410, 416, 17-4 and other grades, and its 304 and 316 castings are used for applications such as food processing equipment, medical devices, valves, pumps, petrochemical equipment and other industrial components. Its current facility in Milwaukee supports investment casting for parts ranging from miniature components to castings up to about 50 lb, with machining and engineering support available for customized projects. Milwaukee Precision Casting also states that it works to approximately ±0.005 inch per inch linear casting accuracy for its investment casting process and operates under ISO 9001:2015 certification and AMS 2175 requirements.
Suitable Customers
Milwaukee Precision Casting is suitable for OEMs and industrial buyers that need relatively small to medium stainless steel investment castings, especially companies working in food processing, medical equipment, pumps and valves, oil and gas, petrochemical, mining, utilities, machine tools, agriculture and other applications where corrosion resistance and precision are important.
2. Besser Casting
Established: 2002
Headquarters: Ningbo, Zhejiang, China
Main Products:
- Stainless steel valve bodies and fluid-control components
- Stainless steel pump housings and hydraulic components
- Stainless steel equipment housings and structural components
- Stainless steel lock housings and hardware castings
Company Profile
Ningbo Besser Casting Co., Ltd. was established in 2002 and has developed its business around precision investment casting and customized metal components. Stainless steel casting is one of its core casting capabilities, with the company producing a wide range of austenitic, martensitic, duplex, super austenitic and other stainless steel materials. Besser states that it can work with more than 200 metal grades and manufacture stainless steel castings from approximately 30 grams to 200 kg or more, allowing it to handle both relatively small precision components and larger industrial castings. Its production system includes ceramic shell making, investment casting, heat treatment, machining, surface treatment and inspection. For quality control, Besser provides material analysis, hardness testing, mechanical testing, magnetic particle inspection, X-ray testing, leak testing and ultrasonic inspection. The company also operates an in-house machining workshop, allowing customers to order castings with secondary machining and finishing rather than coordinating multiple suppliers. Besser supports customized production based on drawings, CAD data, samples and application requirements.
Suitable Customers
Besser is suitable for overseas OEMs, equipment manufacturers, distributors and engineering companies looking for customized stainless steel castings in industrial machinery, automotive components, hydraulic equipment, construction hardware, bathroom hardware, agricultural equipment, fluid-control systems and other applications. It is particularly suitable when the buyer needs casting, machining, heat treatment and inspection from one manufacturing source.
3. Fisher Cast Steel Inc
Established: 1957
Headquarters: Ohio, United States
Main Products:
- Stainless steel valve and pressure-control castings
- Stainless steel pump and fluid-handling castings
- Large stainless steel industrial machinery castings
- Corrosion-resistant stainless steel equipment components
Company Profile
Fisher Cast Steel has operated as an employee-owned and operated sand and investment foundry since 1957. Stainless steel casting is a major part of its business, alongside low-alloy and carbon steel casting. The company states that it produces stainless and low-alloy carbon steel castings from approximately 1 oz. to 8,500 lb, giving it a substantially wider casting-weight range than foundries focused only on small precision parts. Its material capabilities include corrosion-resistant stainless steels, duplex stainless steels, heat-resistant grades, Hastelloy, cobalt-based materials and low-alloy carbon steels. Fisher also provides front-end casting design and foundry engineering support, helping customers review a component before production rather than simply manufacturing from a finished drawing. This capability is particularly useful when a customer is converting a machined or fabricated part into a casting and needs help with gating, geometry, material selection or manufacturability.
Suitable Customers
Fisher Cast Steel is suitable for industrial OEMs and engineering companies that need both small and large stainless steel castings, particularly buyers in heavy equipment, fluid handling, industrial machinery, energy, chemical processing and other applications requiring corrosion-resistant or high-performance steel castings.
4. Stainless Foundry & Engineering, Inc
Established: 1946
Headquarters: Milwaukee, Wisconsin, United States
Main Products:
- Stainless steel pump and valve castings
- Stainless steel nuclear and power-generation components
- Stainless steel chemical and petrochemical equipment castings
- Stainless steel food, pharmaceutical and process-equipment castings
Company Profile
Stainless Foundry & Engineering, Inc. was established in 1946 by John McBroom and has developed a long-standing business in both sand casting and investment casting. Stainless steel casting is central to its operation: the company states that stainless steel castings account for about 70% of the more than 250 alloys it pours. Its production covers castings ranging from less than 1 lb to more than 7,000 lb, with annual shipments exceeding 4,000,000 lb. The company supplies corrosion-resistant, high-temperature and wear-resistant steel, stainless steel and high-alloy components. Its stainless steel casting work includes pump and valve components as well as parts for nuclear, petrochemical, chemical, pulp and paper, pharmaceutical, food and dairy, power-generation and military applications. SFE provides both raw and machined castings and has on-site non-destructive testing capabilities for demanding applications. Its large alloy portfolio also includes austenitic, martensitic, duplex, precipitation-hardening and super-austenitic stainless steels.
Suitable Customers
SFE is suitable for OEMs and engineering contractors that require stainless steel castings for critical or demanding service, especially in nuclear, chemical, petrochemical, power generation, pharmaceutical, food processing, pulp and paper, military and heavy industrial applications.
5. KICastings, Inc
Established: 1992
Headquarters: United States customer service and sales; manufacturing operations are associated with Kairit Precision Machinery
Main Products:
- Precision stainless steel transportation components
- Stainless steel aerospace and aviation cast components
- Stainless steel electrical and industrial cast parts
- Stainless steel food-equipment components
Company Profile
KICastings traces its origins to 1992 through its mold-making operation and has since expanded into a vertically integrated precision casting business. Stainless steel investment casting is an important part of its operation, particularly for complex components that require controlled dimensions, corrosion resistance and subsequent machining. In 2008, the company upgraded its investment casting facility with two 250 kg and two 100 kg melting furnaces, providing an annual output capacity of approximately 300 tons across carbon steel, brass, alloy steel and stainless steel. Its stainless steel casting capabilities include chromium-, nickel-, molybdenum- and low-carbon stainless materials, with grades such as 304, 316, 317, 410, 416, 17-4 and duplex stainless steels supported for different applications. The company also operates in-house mold making, heat treatment, CNC machining and testing, including X-ray inspection. KICastings states that sample development typically takes 2–4 weeks and batch production about 4–6 weeks depending on complexity, while its vertically integrated model allows it to handle customized projects from mold development through finished components.
Suitable Customers
KICastings is suitable for OEMs and engineering companies in aerospace, automotive, railway, transportation, food equipment, electrical equipment, machine tools and industrial manufacturing that require complex stainless steel investment castings together with mold development, machining and testing.
6. Northern Stainless Corporation
Established: 1984
Headquarters: Pewaukee, Wisconsin, United States
Main Products:
- Stainless steel pump volute castings
- Stainless steel pump impeller castings
- Stainless steel diffuser bowl castings
- Stainless steel pressure-containing valve castings
Company Profile
Northern Stainless began foundry operations in 1984 as Novatec and became Northern Stainless Corporation after an ownership change in 1988. Its stainless steel casting business is particularly focused on short-run and pressure-containing components, with pump and valve OEMs forming a major customer group. The company operates a 60,000-square-foot facility and can produce castings with a pour-weight capacity of up to 4,000 lb for most non-bronze alloys, normally resulting in castings of up to around 2,000 lb depending on yield. Its stainless steel portfolio includes common grades such as CF8M as well as more demanding materials such as CN7M and super duplex grades. Production capabilities include pattern making, sand molding, rough and finished machining, certified NDT, pressure testing, hydro testing, metallurgy and metrology. Northern Stainless also states that it pressure-tests 100% of pressure-containing rough castings to help prevent potentially leaking castings from reaching customers. This makes pressure-bearing stainless steel components a particularly important part of its business.
Suitable Customers
Northern Stainless is well suited to pump and valve OEMs, fluid-control equipment manufacturers, mining companies, paper-industry equipment manufacturers and other industrial buyers that need pressure-containing stainless steel castings, short production runs or difficult stainless and specialty alloys.
7. CIREX FOUNDRY
Established: 1947
Headquarters: Almelo, The Netherlands
Main Products:
- Stainless steel automotive precision castings
- Stainless steel pump and fluid-technology components
- Stainless steel food and pharmaceutical equipment castings
- Stainless steel petrochemical and industrial components
Company Profile
The history of CIREX dates back to 1947, when an experimental lost-wax foundry was established in the Philips physics laboratory in Eindhoven. The CIREX foundry in Almelo was subsequently established in 1963 through the merger of three companies and gradually focused its business on lost-wax steel casting. Today, stainless steel casting forms an important part of its high-volume precision casting business. CIREX specializes in complex steel components produced through the investment casting process and supports product development, prototyping, casting, finishing and machining. Its Netherlands foundry has a steel melting capacity of approximately 4,000 tons per year and is designed for large production series. CIREX states that production series can range from around 10,000 to 5,000,000 pieces per year, while individual castings can reach approximately 30 kg. Its stainless steel castings are used in automotive, truck, aviation, pharmaceutical, food, petrochemical, pump and fluid-technology and industrial applications. The company works closely with customers during product development and can adapt casting geometry and material selection for series production.
Suitable Customers
CIREX is particularly suitable for OEMs that require repeatable stainless steel investment castings in medium- to high-volume production, especially automotive, truck, aviation, pharmaceutical, food, petrochemical, pump and industrial equipment manufacturers.
8. CFS Stainless Steel Foundry
Established: 2002
Headquarters: Ningbo, Zhejiang, China
Main Products:
- Stainless steel valve body castings
- Stainless steel pump component castings
- Stainless steel marine hardware castings
- Stainless steel medical and food-equipment castings
Company Profile
CFS Stainless Steel Foundry has more than 20 years of experience in stainless steel investment casting and operates a foundry in Ningbo, China. Stainless steel casting is the central focus of its business rather than one product among many unrelated casting categories. The company states that its facility covers approximately 20,000 square meters and employs around 250 people. Its stainless steel investment casting production covers components from approximately 0.05 kg to 70 kg, with common materials including 304, 304L, 316, 316L, 17-4 PH and duplex stainless steels. CFS provides the complete casting route from mold and wax-pattern production through shell building, dewaxing, pouring, finishing and inspection. It also offers in-house heat treatment, machining and surface finishing such as electropolishing and mirror polishing. The company mainly manufactures parts from customer drawings or physical samples and supports customized stainless steel components for customers in North America, Europe and Australia. Its application areas include aerospace, petrochemical, medical, automotive, food and dairy, marine, mechanical equipment and fluid-control components.
Suitable Customers
CFS is suitable for overseas OEMs, engineering companies and distributors that need customized stainless steel investment castings from drawings or samples, particularly for valves, pumps, marine equipment, medical devices, food machinery and general industrial equipment.
9. American Casting Company
Established: 1974
Headquarters: Hollister, California, United States
Main Products:
- Stainless steel medical device castings
- Stainless steel aerospace precision castings
- Stainless steel oil and gas components
- Stainless steel food-processing equipment castings
Company Profile
American Casting Company has operated its foundry in Hollister, California since 1974 and focuses on investment castings for demanding applications where short development and production lead times are important. Stainless steel casting is a core part of its investment casting business, alongside nickel-based and cobalt-based alloys. The company works with a broad range of stainless steels and uses modern manufacturing technologies, including 3D printing, to support prototype and custom production work. Its customers include companies in medical, aerospace, oil and gas and food processing industries. American Casting Company states that it supports prototypes, high-volume production and custom production programs, with a production philosophy designed around rapid response rather than only traditional long-cycle foundry production. Its capabilities make it suitable for complex stainless steel components where geometry, material performance and delivery time all need to be controlled together.
Suitable Customers
American Casting Company is suitable for aerospace, medical, oil and gas and food-processing OEMs that require custom stainless steel investment castings and place particular importance on rapid development, complex geometry and production responsiveness.
10. ForceBeyond Foundry
Established: 2006
Headquarters: New Castle, Delaware, United States
Main Products:
- Stainless steel valve body castings
- Stainless steel pump and impeller castings
- Duplex and super duplex stainless steel flow-control castings
- Stainless steel industrial and medical equipment castings
Company Profile
ForceBeyond was established in 2006 and operates from its Delaware headquarters while coordinating a broader manufacturing network. Stainless steel casting is one of its precision manufacturing capabilities, with a particular emphasis on corrosion-resistant and complex components. Its current stainless steel casting capabilities include 304, 316, 17-4 PH, 410, duplex and super duplex stainless steels, with additional application-specific grades available according to project requirements. The company supports investment casting together with CNC machining, heat treatment, passivation, electropolishing, inspection and assembly. Its stainless steel casting applications include valve bodies, pump components, impellers, manifolds, fittings, medical components, marine components, oil and gas equipment and industrial machinery. ForceBeyond also provides duplex and super duplex castings in a reported weight range of approximately 1 g to 220 kg, with customized dimensions and wall thickness depending on the project. Its integrated approach allows customers to request a complete stainless steel component rather than only an unfinished casting.
Suitable Customers
ForceBeyond is suitable for OEMs and engineering companies in oil and gas, marine, chemical processing, medical, energy, aerospace, defense, industrial equipment and fluid-control applications, particularly when corrosion resistance, complex geometry and additional machining or finishing are important.
FAQ
1. Why does porosity appear after I machine a stainless steel casting that looked fine before machining?
Porosity can exist below the original casting surface and become exposed when CNC machining removes material. This is one reason a casting can pass a basic visual inspection but fail later during machining. Real machining discussions describe porosity being discovered during finishing passes, sometimes after many hours of machining and rework. For critical components, the practical solution is to identify high-risk areas on the drawing and ask the foundry whether X-ray, penetrant testing, ultrasonic testing or another suitable NDT method should be performed before extensive machining. Do not assume that a visually clean surface proves that the internal metal is fully sound.
2. Do I really need X-ray inspection for my stainless steel casting?
Not every stainless steel casting needs X-ray inspection. The requirement depends on the consequence of an internal defect. A decorative bracket and a pressure-containing valve body do not have the same inspection risk. For critical castings, radiography can help identify internal porosity and shrinkage that cannot be reliably found through visual inspection. In an Eng-Tips discussion involving 347 stainless steel investment castings, engineers specifically discussed micro-shrinkage and porosity and confirmed that X-ray had been used to evaluate casting soundness. The better purchasing approach is to define the critical areas, defect acceptance criteria and required NDT method before production.
3. Is 316 stainless steel always better than 304 for cast parts?
No. 316 is not automatically the better choice for every application. The key difference is that 316 contains molybdenum, which generally provides better resistance to pitting and crevice corrosion in chloride-containing environments. If the component will contact seawater, salt spray or certain chemical media, 316 or 316L may be more appropriate. For general industrial, food-processing or indoor applications where chloride exposure is limited, 304 or another suitable grade may be sufficient and less expensive. Ask the foundry to select the grade based on the actual fluid, temperature, corrosion environment and mechanical requirements rather than simply choosing the most expensive stainless steel.
4. Can I order only a small quantity of custom stainless steel castings?
Usually, there is no single universal MOQ for stainless steel investment casting. The economical quantity depends heavily on tooling, part weight, geometry, furnace loading and secondary processing. Public supplier information shows a wide range: some investment casting suppliers accept prototype quantities of only a few pieces, while production-oriented projects may be quoted in batches of 50, 100 or several hundred pieces. For a small order, tell the foundry your expected annual demand instead of discussing only the first order quantity. A supplier may be able to structure tooling and sample costs differently when there is a clear repeat-production plan.
5. How long does a custom stainless steel casting project normally take?
There is no reliable universal lead time because tooling, shell building, material availability, casting size, heat treatment, machining and inspection can all change the schedule. Current supplier information gives examples ranging from roughly 2–4 weeks for sample development to 4–6 weeks for batch production at one vertically integrated foundry, while other suppliers quote longer periods for tooling and first-article approval. Instead of asking only "How many days?", ask for a schedule covering tooling → first casting → inspection → sample approval → machining → mass production. This makes it easier to identify where a delay is likely to occur.
Conclusion
If you are looking for a supplier that can handle customized stainless steel investment castings together with mold development, casting, heat treatment, machining and inspection, Besser Casting is worth considering. Besser has been manufacturing investment castings since 2002 and supports a wide range of stainless steel materials, customized geometries and secondary processing requirements. For customers in the hardware and security sector, Besser also manufactures customized stainless steel lock housings, lock bodies and other lock-related cast components, making it possible to develop the casting according to your drawing, material and functional requirements.
If you are sourcing custom stainless steel lock castings or other precision stainless steel components and want to discuss your drawing, material, quantity and production requirements with Besser's engineering team, you can contact Besser Casting here for a project evaluation and quotation.
