What Stainless Foundry & Engineering, Inc does

Stainless Foundry & Engineering, Inc. (SF&E) is a privately held, Milwaukee-based foundry founded in 1946 that operates a dual-process casting platform combining a sand casting division (50 lbs to 7,000+ lbs furnace capacity) and an investment casting division (under 1 lb to 350 lbs), together with in-house CNC machining (ounces to 600 lbs, recently extended with an 800mm Okuma Horizontal Machining Center). The company pours over 250 ferrous and non-ferrous alloys — including stainless steels, nickel and cobalt alloys, carbon and low-alloy steels, cast irons, tool steels, brass and bronze, and specialty alloys such as the proprietary Illium 8 non-galling nickel alloy — supported by an in-house metallurgy team, MAGMA solidification simulation, additive manufacturing capability, and on-site non-destructive testing via partner InspecTech.

SF&E sells exclusively on a quote-based, project-by-project basis to enterprise OEMs, with no public pricing and no distributor network. Its core product set targets the pump and valve industry (impellers, valve bodies and bonnets, pump casings and volutes, double suction components) for downstream industries including nuclear power generation, military and naval (US Navy), oil and gas (including offshore platforms such as Hibernia), chemical and petrochemical, mining and minerals, food and dairy processing, and pulp processing. Distribution is direct, via a North American field sales team with a growing international export program into Canada, Mexico, Germany, Norway, South Korea, Denmark, and Belgium, supported by the Wisconsin Economic Development Corporation's ExporTech program.

Revenue is driven by custom casting volume, alloy complexity, weight, and regulatory certification burden. Documented customer relationships span decades (e.g., 20+ years with Fristam Pumps), and the company holds the largest single known pour of 6,000 lbs of CA6NM martensitic stainless steel for a nuclear impeller. Annual shipments approach 4 million pounds across more than 600 customers. SF&E's competitive position rests on a stack of regulatory certifications uncommon for a single-site foundry — including being the first US foundry certified to Pressure Equipment Directive 97/23/EC, ISO 9001:2015, ASME NQA-1, NAVSEA, NIAC, 10 CFR Part 50 Appendix B, and NORSOK M-650 — which collectively restrict qualified competition in nuclear, naval, and EU pressure-equipment applications.

Name

Stainless Foundry & Engineering, Inc

Legal name

Stainless Foundry & Engineering, Inc.

Website

https://stainlessfoundry.com

Company type

Private

Founded year

1946

Operating status

Operating

Headcount range

251–500 employees

Short description

Milwaukee-based dual-process foundry operating sand and investment casting plus in-house machining, producing complex cast components in 250+ alloys for nuclear, defense, pump and valve, petrochemical, and food processing OEMs across North America and Europe.

Ownership category

akta.pro rank

Product category

Industrial Metal Castings and Foundry Services

NAICS

Foundries (3315), Steel Investment Foundries (331512), Steel Foundries (except Investment) (331513), Other Nonferrous Metal Foundries (except Die-Casting) (331529)

SIC

Iron & Steel Foundries (3320), Nonferrous Foundries (Castings) (3360)

akta.pro primary industry

Specialty & Alloy Steel (Stainless, Tool Steel, Electrical Steel, High-Strength/HSLA) (IMAKABAJ)

Keywords

• Sand casting services
• Investment castings
• Custom alloy castings
• Precision machined components
• Stainless steel foundry

Headquarters

HQ city

Milwaukee

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Metal Casting Production: One-time project-based production of sand castings and investment castings in custom alloys, sold directly to OEM manufacturers. Pricing is quote-based per job. Revenue is driven by casting complexity, alloy selection, weight, and order volume.
2. Machining Services: In-house CNC machining services (turning and milling) for cast parts, ranging from ounces to 600 lbs. Offered as a complementary service to casting customers and as a standalone service.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Stainless Foundry & Engineering operates two foundries in one—a sand casting division (50 lbs to 7,000+ lbs furnace capacity) and an investment casting division (less than 1 lb to 350 lbs)—alongside an in-house CNC machining shop (ounces to 600 lbs). The company pours over 250 ferrous and non-ferrous alloys including stainless steels, nickel and cobalt alloys, carbon/low-alloy steels, cast irons, tool steels, and specialty alloys such as Illium 8, producing pump and valve components, pressure-retaining parts, and custom castings for OEMs in nuclear, defense, chemical, oil & gas, food/dairy, and pharmaceutical industries.

Product overview

Stainless Foundry & Engineering operates as a one-stop-shop foundry offering two integrated casting divisions—sand casting (50 lbs to 7,000+ lbs furnace capacity) and investment casting (less than 1 lb to 350 lbs)—together with in-house machining services. The company pours over 250 ferrous and non-ferrous alloys including stainless steels, nickel alloys, cobalt alloys, carbon and low-alloy steels, cast irons, tool steels, brass, bronze, and specialty alloys like Illium 8. Core products center on pump and valve components—impellers (open, closed, semi-open, multi-stage, double suction), valve bodies, bonnets, and pump casings/volutes—serving aerospace, marine, power generation, chemical, petrochemical, nuclear, military, food and dairy, pharmaceutical, and other industries. Quality assurance includes comprehensive NDT services, and engineering capabilities encompass modeling and additive manufacturing.

Differentiator

Problem solved

Functional benefit

Products and services

• Sand Casting Sand casting production with furnace capacity from 50 lbs to 7,000+ lbs, offering versatile and cost-effective production for nearly any part configuration across stainless steel, nickel, cobalt, carbon and low-alloy steels, cast irons, tool steels, and specialty alloys.
• Investment Casting Investment casting production of precision parts ranging from less than 1 lb to 350 lbs, offering tighter tolerances and fine surface detail than sand casting across the same broad alloy portfolio.
• Machining Services In-house CNC machining (turning and milling) for cast parts ranging from ounces to 600 lbs, supporting intricate geometry and high precision as a complementary service to casting customers and as a standalone service.
• Pump Impellers Cast and machined pump and valve impellers—open, closed, semi-open, multi-stage, and double suction designs—manufactured across multiple alloys for use in centrifugal and positive displacement pumps serving diverse media applications.
• Valve Bodies Pressure-containing valve castings including butterfly valve bodies, ball valve bodies, check valves, foot valves, and pressure relief valves in stainless steel, nickel, and specialty alloys.
• Valve Bonnets Covers for valve body openings cast in stainless and specialty alloys, including extended, cryogenic, bolted, round, and welded bonnet configurations.
• Pump Volutes and Casings Pressure-retaining pump housings including upper casings, lower casings, double suction casings, multi-stage casings, and vertical and horizontal casings for industrial pump assemblies.
• Double Suction Pump Components Double suction pump casings and impellers engineered for liquids that enter from both sides of the impeller, eliminating axial forces and enabling higher flow rates than single suction designs.
• Quality Assurance and Non-Destructive Testing Comprehensive on-site non-destructive testing and weld repair services including hardness testing, liquid penetrant, magnetic particle, MT-PT acceptance, radiographic, ultrasonic, visual testing, and advanced welding services, delivered via the on-site InspecTech partnership.

Quantifiable outcome

• 4–6 week lead times for commercial production
• +2 more outcomes

Named customers9 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Supreme CorescoreImplementation/ SI/ Consulting Partner · 1 January 2023Milwaukee-based supplier of high-quality sand cores. Starting in 2023, SF&E partnered with Supreme Cores to provide the foundry with sand cores for casting production, strengthening domestic supply chain.
• InspecTech Corp.coreImplementation/ SI/ Consulting PartnerNon-destructive testing (NDT) partner operating on-site at SF&E. Provides comprehensive and efficient NDT services including radiographic, ultrasonic, liquid penetrant, and magnetic particle testing, making SF&E a true hub for all casting, testing, and machining capabilities.
• Strohwig IndustriesminorImplementation/ SI/ Consulting PartnerApproved supplier and preferred partnership since over three years. Specializes in complex, high-quality molds, dies, and precision parts supporting SF&E's casting production.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Ellwood Group: Pennsylvania-based specialty steel foundry and forge group producing large cast and forged components for aerospace, defense, mining, oil & gas and power generation. Comparable alloy range and heavy-industrial end-market mix.
• Metaltek International: Mid-sized US specialty high-alloy foundry offering steel, stainless, nickel, cobalt and bronze castings plus machining and NDT. Closest comparable to SF&E on alloy breadth, regulated-industry focus and one-stop-shop model.

Regional players

• Badger Alloys: Milwaukee-based ferrous and non-ferrous investment casting foundry with in-house machining and NDT. Same regional labor pool and regulatory environment as SF&E; competes for the same Wisconsin/Midwest OEM casting work.
• Wisconsin Centrifugal: Wisconsin-based specialty foundry using centrifugal, sand and investment casting for stainless, nickel and high-alloy components serving pumps, valves and process industries. Overlaps SF&E on alloy mix and pump/valve customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/stainless-foundry-&-engineering-inc

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stainless Foundry & Engineering, Inc