Small-bore seamless tubing for hydraulic, pneumatic and instrument impulse lines. Tight OD and wall tolerance so compression fittings seal reliably first time. Supplied in straight lengths or coils.
| Grades available | 316 / 316L |
|---|---|
| Sizes | 6 mm to 25 mm OD |
| Thickness | 0.7 – 2.5 mm |
| Finish | Bright annealed |
| Minimum order | 25 kg |
| Standard | ASTM A269 / A213 |
| OD tolerance | ± 0.10 mm |
| Supply | 6 m straight or coil |
| Hardness | ≤ 90 HRB |
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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.
Molybdenum added to 304. Handles chlorides — coastal air, salt, many process chemicals.
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 | ≤ 0.080 | |
| Mn | Manganese | ≤ 2.00 | |
| Si | Silicon | ≤ 0.750 | |
| P | Phosphorus | ≤ 0.045 | |
| S | Sulphur | ≤ 0.030 | |
| Cr | Chromium | 16.00 – 18.00 | |
| Ni | Nickel | 10.00 – 14.00 | |
| Mo | Molybdenum | 2.00 – 3.00 | |
| N | Nitrogen | ≤ 0.100 | |
| Fe | Iron | Balance | ≈ 67.0% |
Limits as per ASTM A240 / A276. 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.