Square and hexagonal bar stock, largely used by fastener manufacturers and machine shops. Hex bar in 303 free-machining grade gives fast cycle times and clean threads.
| Grades available | 303 / 304 / 316 |
|---|---|
| Sizes | 6 mm to 100 mm A/F |
| Finish | Bright drawn, ground |
| Minimum order | 100 kg |
| Shapes | Square, hexagonal |
| Standard | ASTM A582 / A276 |
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Get quote on WhatsAppEnter your size and we work out the theoretical weight using the density of the grade you pick.
Theoretical weight only. Mill rolling tolerance normally makes the delivered weight differ by 2–5%; we invoice on actual weighbridge weight.
What the metal is actually made of, as specified by the standard.
Free-machining 304 — added sulphur breaks the chip. Fast on the lathe, but weaker corrosion resistance and poor for welding.
Strip shows the mid-point of each specified range, with iron as balance. The table below is the full specification.
| Element | Name | Specified % by weight | |
|---|---|---|---|
| C | Carbon | ≤ 0.150 | |
| Mn | Manganese | ≤ 2.00 | |
| Si | Silicon | ≤ 1.00 | |
| P | Phosphorus | ≤ 0.200 | |
| S | Sulphur | 0.15 – 0.35 | deliberately added |
| Cr | Chromium | 17.00 – 19.00 | |
| Ni | Nickel | 8.00 – 10.00 | |
| Mo | Molybdenum | ≤ 0.600 | |
| Fe | Iron | Balance | ≈ 70.8% |
Limits as per ASTM A582. Always confirm against the mill test certificate for your consignment.
Cut-to-length, slitting and custom sections are done in-house. Send the drawing or the dimensions and we will confirm price and lead time.