Stainless Steel 304 Round Bar in round, square and hex to ASTM A276. Compare quotes from verified suppliers on MetalMitra, with MTC 3.1 and worldwide delivery.
- Stainless Steel 304 Round Bar
- SS 304
- Round Bars
- Bright Bars
- Hex Bars
- Square Bars
- Flat Bars
- Forged Bars
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Specifications
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
|---|---|
| Standard | ASTM A276, ASTM A479 |
| Material Grade | Stainless Steel 304 (UNS S30400) |
| Stainless Steel 304 Round Bars | Outside Diameter in the range of 4mm to 500mm |
| Stainless Steel 304 Bright Bars | Outside Diameter in the range of 4mm to 100mm |
| Stainless Steel 304 Hex Bars | 18mm – 57mm (11/16" to 2-3/4") |
| Stainless Steel 304 Square Bars | 18mm – 47mm (11/16" to 1-3/4") |
| Stainless Steel 304 Flats | 1/2" to 10" in thickness range of 2mm to 150mm, Custom Size Stainless Steel Flats available |
| Length | 1 to 6 Meters, Custom Cut Lengths |
| Form | Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
Grades & standards
- Stainless Steel 304
- ASTM A276
- ASTM A479
Chemical composition & mechanical properties
| C | Mn | P | S | Si | Cr | Ni | N |
|---|---|---|---|---|---|---|---|
| 0.07 | 2.00 | 0.045 | 0.030 | 0.75 | 17.5–19.5 | 8.0–10.5 | 0.10 |
| Tensile strength, min | 515 MPa |
|---|---|
| Yield strength (0.2%), min | 205 MPa |
| Elongation in 50 mm, min | 40% |
| Hardness, max | 201 HBW |
Single values are maximums unless marked min. Values per ASTM A240 (plate, sheet and strip); always confirm against the purchase specification and the mill test certificate.
Need a dependable stainless steel bar stock? Stainless Steel 304 Round Bar on MetalMitra comes in round, square and hex to ASTM A276, ready for machining, forging and shaft work.
This range covers round, square, hex and flat sections in bright, black, peeled or forged condition, ready for machine shops and component makers.
Grade 304 is the most widely used 18/8 austenitic stainless steel, offering a dependable balance of corrosion resistance, formability and weldability. 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.
Available forms & variants
- 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.
Performance highlights
- 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.
Typical applications
- Chemical Processing
- Oil & Gas
- Petrochemical
- Pharmaceutical
- Food Processing
- Power Generation
- Marine Industry
- Sugar Industry
- Pulp & Paper
- Heat Exchangers
- Fabrication
- General Engineering
Quality checks & certification
Every lot of Stainless Steel 304 Round Bar sourced through MetalMitra can be inspected and documented to the governing standard and your purchase order.
- 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
Why buy through MetalMitra
- Checked sellers only — Every supplier profile is screened by MetalMitra before it goes live.
- Faster sourcing — Post one requirement and receive competitive offers without chasing calls.
- Paperwork sorted — MTC 3.1, test reports and TPI arranged as your project demands.
- Global logistics — Seaworthy packing and dispatch to project sites across the world.
Ready to buy?
Send your size, grade, quantity and delivery location for Stainless Steel 304 Round Bar, and matching suppliers on MetalMitra will come back with offers.
Technical note: Figures shown are indicative. Final acceptance should be based on the applicable standard, approved drawings and the MTC supplied with the material.
Applications & industries
- Chemical Processing
- Oil & Gas
- Petrochemical
- Pharmaceutical
- Food Processing
- Power Generation
- Marine Industry
- Sugar Industry
- Pulp & Paper
- Heat Exchangers
- Fabrication
- General Engineering
- Oil & Gas
- Petrochemical & Refining
- Power Generation
- Chemical Processing
- Marine & Shipbuilding
- Pharmaceutical
- Food & Dairy
- Pulp & Paper
- Sugar
Testing & documents
Ask for the documents you need in your requirement — suppliers confirm them in their quotation:
- Mill test certificate to EN 10204 3.1, or 3.2 with third-party witness
- Third-party inspection (TPI) by SGS, Bureau Veritas, TÜV or your nominated agency
- Tests as the standard or your order requires: hydro, PMI, IGC, NDT, hardness or impact tests
Need Stainless Steel 304 Round Bar?
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