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431 Stainless Steel
431 Stainless Steel: High-Chromium Martensitic Performance. Exceptional corrosion resistance for a hardenable martensitic grade.
431 Stainless Steel
431 is designed to provide better corrosion resistance and toughness than the 410/420 series. It is a high-chromium, low-nickel martensitic alloy that offers the best corrosion resistance of all martensitic stainless steels.
Chemical Composition | Percentage % |
|---|---|
Carbon | 0.20% |
Manganese | 1.00% |
Silicon | 1.00% |
Nickel | 1.25-2.50% |
Chromium | 15.00-17.00% |
Sulphur | 0.03% |
Phosphorous | 0.04% max |
Molybdenum | - |
Certified Quality Assurance
At Progressive Metal Manufacturing, we provide high-integrity 431 Stainless Steel (UNS S43100) that meets the most demanding industrial standards. To ensure total transparency and material performance, our stock is available with a full BS EN 10204 3.1 mill certificate upon request. This commitment to documented quality ensures that every batch we supply offers the exact chemical and mechanical properties required for your critical engineering projects, providing you with audit-ready peace of mind.
Industrial Applications & Versatility
The unique metallurgical profile of Grade 431 makes it an exceptional choice for complex fabrication processes
where high strength must be paired with versatility. Our materials are specifically selected for
their suitability in advanced manufacturing operations, including:
Cold Heading & Bending: Ideal for high-strength fasteners and structural components.
Deep Drawing & Spinning: Providing the ductility required for intricate, hollow-ware industrial parts.
Whether you are developing complex aerospace components or heavy-duty industrial hardware,
Progressive Metal Manufacturing provides the foundational strength and formability your project demands.
Precision Supply & Custom Specifications
We offer versatile supply solutions designed to match your specific production tolerances.
Our facility features advanced sawing technology capable of delivering singular bespoke pieces or
high-volume cut runs tailored to your exact requirements.
Our SS431 inventory is stocked in multiple conditions to suit varying strength needs:
Round Bar (Annealed/Normal): Available in diameters from 12mm to 260mm.
Round Bar (Quenched & Tempered): High-performance diameters ranging from 50.5mm to 151mm.
Our veteran sales team is ready to assist with your technical inquiries,
ensuring you receive the optimal material condition and dimensions for your workflow.
316 Stainless Steel
410 Stainless Steel
416 Stainless Steel
