Stainless Steel 431 Round Bar

Stainless Steel 431 Round Bar for machining, forging and shaft work, available on MetalMitra in round, square and hex to ASTM A276, with mill-certified traceability on every lot.

This range covers round, square, hex and flat sections in bright, black, peeled or forged condition, ready for machine shops and component makers.

Grade 431 is a heat-treatable martensitic stainless steel with high strength, toughness and better corrosion resistance than other martensitic grades. Stainless steel balances corrosion resistance, strength, hygiene and easy fabrication, and with austenitic, ferritic, martensitic and PH families there is a grade for almost every service condition.

Product range

• Round Bars — Bright, black, peeled or centreless-ground rounds.
• Hex & Square Bars — Hex and square sections for turned and machined parts.
• Flat Bars — Flats for fabrication and general engineering.
• Forged & Hollow Bars — Forged bars, rings and hollow bars made to order.

Why engineers choose it

• Corrosion Resistance — Holds up in a wide range of industrial environments.
• Strength & Durability — Strong enough for a long, low-maintenance service life.
• Hygienic Surface — Easy to clean, a natural fit for sanitary service.
• Excellent Fabrication — Forms, machines and welds without fuss.

Where it is used

• Chemical Processing
• Oil & Gas
• Petrochemical
• Pharmaceutical
• Food Processing
• Power Generation
• Marine Industry
• Sugar Industry
• Pulp & Paper
• Heat Exchangers
• Fabrication
• General Engineering

Inspection & paperwork

Suppliers on MetalMitra back Stainless Steel 431 Round Bar with the checks and paperwork your QA team expects.

• Diameter & straightness inspection
• Visual and surface inspection
• Grade verification against the order
• Chemical composition verification
• Mechanical property testing
• Hardness testing as applicable
• Ultrasonic testing as applicable
• EN 10204 3.1 Mill Test Certificate

Material properties

Chemical composition and mechanical properties are supplied to the limits of the governing material standard. Actual heat values are reported on the mill test certificate shared with each consignment.

The MetalMitra advantage

• Verified suppliers — Mills, manufacturers and stockists are reviewed by the MetalMitra team before they list.
• One RFQ, several quotes — Share size, grade and quantity once and compare offers side by side.
• Full traceability — Heat numbers, EN 10204 3.1 MTCs and third-party inspection on request.
• Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.

Get a quote

Tell us the specification, quantity and destination you need for Stainless Steel 431 Round Bar. MetalMitra connects you with suppliers who can deliver.

Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the mill test certificate.