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Alloy 317LMN (UNS S31726) is an austenitic chromium-nickel-molybdenum stainless steel with corrosion resistance superior to 316L and 317L. The higher molybdenum content, combined with an addition of nitrogen, provides enhanced corrosion resistance, especially in acidic chloride-containing service. It resists pitting and crevice corrosion, offers higher yield strength than 317L due to nitrogen strengthening, and can be used in the as-welded condition free from chromium carbide precipitation. It is non-magnetic in the annealed condition and cannot be hardened by heat treatment.
| Material Grade | ASTM A240 / UNS S31726 | Standard | ASTM A240 / UNS S31726 |
| Thickness Range | As per customer requirements | Width Range | As per customer requirements |
| Length Range | As per customer requirements | MOQ | 1 Ton |
| Lead Time | 7-15 days | Port of Shipment | Shanghai / Tianjin |
| C | 0.035 max | Mn | 2.0 max |
| Si | 1.0 max | P | 0.045 max |
| S | 0.030 max | Cr | 18.00 - 20.00 |
| Mo | 3.00 - 4.00 | Ni | 11.00 - 15.00 |
| Fe | Balance | Tensile Strength | ≥515 MPa |
| Yield Strength (0.2% Offset) | ≥205 MPa | Elongation | ≥35% |
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