Stainless Steel Hex Bars: ASTM A276 / A479, 304, 316, 303. Get quotes from verified suppliers on MetalMitra.
- Stainless Steel Hex Bars
- Hex Bars
- ASTM A276 / A479
- 304
- 316
- 303
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Specifications
| Standard | ASTM A276, A479, A484 |
|---|---|
| Grade | 303, 304, 304L, 316, 316L, 410 |
| Size (A/F) | 3 mm to 100 mm |
| Length | 3 m to 6 m, cut lengths |
| Tolerance | h9, h11, h12 |
| Condition | Cold drawn, annealed |
| Finish | Bright, polished |
Grades & standards
- Stainless Steel 304
- Stainless Steel 304L
- Stainless Steel 316
- Stainless Steel 316L
- 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.
| C | Mn | P | S | Si | Cr | Ni | N |
|---|---|---|---|---|---|---|---|
| 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 17.5–19.5 | 8.0–12.0 | 0.10 |
| Tensile strength, min | 485 MPa |
|---|---|
| Yield strength (0.2%), min | 170 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.
| C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | 0.10 |
| Tensile strength, min | 515 MPa |
|---|---|
| Yield strength (0.2%), min | 205 MPa |
| Elongation in 50 mm, min | 40% |
| Hardness, max | 217 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.
| C | Mn | P | S | Si | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.030 | 2.00 | 0.045 | 0.030 | 0.75 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 | 0.10 |
| Tensile strength, min | 485 MPa |
|---|---|
| Yield strength (0.2%), min | 170 MPa |
| Elongation in 50 mm, min | 40% |
| Hardness, max | 217 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.
Source Stainless Steel Hex Bars from verified manufacturers, mills and stockists on MetalMitra. Bright stainless steel hex bars for nuts, fittings and turned parts, available in free-machining 303 and corrosion-resistant 304 and 316.
Share your size, grade, quantity and delivery location once, and compare offers from suppliers who stock or manufacture Stainless Steel Hex Bars to ASTM A276.
What you can source
- Bright Hex Bars — Cold-drawn hex bars with close A/F tolerance.
- Hot-Rolled Hex Bars — Black hex bars for forging and heavy machining.
- Cut Lengths — Bars cut to length for production runs.
- Hex Blanks — Pre-cut blanks for nuts, unions and fittings.
Key properties
- Accurate Across-Flats — Tight A/F tolerance reduces machining time.
- Good Machinability — Free-cutting grades available for high-speed turning.
- Bright Finish — Clean cold-drawn surface ready for use.
- Consistent Supply — Standard A/F sizes from 3 mm to 100 mm.
Applications & industries
- Nuts & Fasteners
- Hydraulic Fittings
- Pipe Fittings & Unions
- Valve Parts
- Automotive Components
- CNC Turned Parts
- General Engineering
Testing & documentation
Inspection and documentation for Stainless Steel Hex Bars follow ASTM A276, A479 plus any extra requirements in your PO.
- Dimensional & across-flats check
- Chemical analysis
- Mechanical property testing
- Straightness check
- Mill Test Certificate
Why source on MetalMitra
- 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, test certificates and third-party inspection on request.
- Delivered worldwide — Export-worthy packing and shipping to India, the Middle East, Africa, Europe and the Americas.
Request pricing
Post an RFQ for Stainless Steel Hex Bars with your drawing or specification and receive quotes from verified suppliers.
Technical note: Values on this page are for reference. Always confirm against the governing standard, your purchase specification and the test certificate.
Applications & industries
- Nuts & Fasteners
- Hydraulic Fittings
- Pipe Fittings & Unions
- Valve Parts
- Automotive Components
- CNC Turned Parts
- General Engineering
- Oil & Gas
- Power Generation
- Chemical Processing
- Construction & Infrastructure
- Automotive
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
FAQs
Across flats — the distance between two parallel faces of the hex, which defines its size.
Standard random lengths of 3 to 6 metres, or cut to length on request.
Cold-drawn hex bars are usually supplied to h11 or h12 tolerance.
Need Stainless Steel Hex Bars?
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