317
Data verified317 increases molybdenum to 3–4% over 316, giving a further step in pitting and acid resistance for aggressive chemical service. It sits between 316L and the 6% molybdenum super-austenitics.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.08 |
| Si | ≤0.75 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 18.00–20.00 |
| Ni | 11.00–15.00 |
| Mo | 3.00–4.00 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Delivery condition | Annealed |
| Hardness | ≤217 HB (annealed) |
| Tensile strength | 515–690 MPa |
| Density | 7.90 g/cm³ |
Heat treatment
Solution anneal 1010–1120 °C, rapid cool.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.4449 |
| aisi | 317 |
| jis | SUS317 |
| gb | 06Cr19Ni13Mo3 |
Compare side by side: 317 vs 317L · 317 vs 316
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Chemical and petrochemical reactors, flue-gas desulfurisation, pulp bleaching plant, dye manufacture.
Processing: Weldable with over-alloyed fillers; most users specify the low-carbon 317L variant for fabricated equipment.
Need 317 from stock?
Steel.Wiki is sponsored by Shenzhen NewAsia Special Steel (Nasteel), a special-steel stockholder in Shenzhen stocking mold, tool and alloy steels with EN 10204 3.1 certification.
Ask for a quotationVisit NasteelSource: ASTM A240 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.