Specifically designed to withstand chloride-containing media, making it highly suitable for applications in chemical processing, oil and gas, pulp and paper, and seawater desalination.
UNS S31254 offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking. It contains high levels of chromium, molybdenum, and nitrogen, which contribute to its exceptional corrosion resistance properties. Additionally, the steel has a balanced composition that provides excellent mechanical strength and toughness.
This steel grade exhibits good weldability and formability, allowing for ease of fabrication and installation. It can be readily welded using common welding methods without the need for preheating or post-weld heat treatment.
DOWNLOAD PDF SPEC SHEETFinal chemical, mechanical properties, dimensions and tolerances are confirmed against the governing specification and purchase order.
| % | Carbon | Silicon | Manganese | Phosphorous | Sulphur | Chromium | Nickel | Molybdenum | Nitrogen | Copper |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | 19.50 | 17.50 | 6.00 | 0.18 | 0.50 |
| Max | 0.02 | 0.80 | 1.00 | 0.030 | 0.010 | 20.50 | 18.50 | 6.50 | 0.22 | 1.00 |
| % | Yield Strength | Tensile Strength | Elongation | Charpy Impact @ Rt | Hardness |
|---|---|---|---|---|---|
| Min | 44 ksi [300 MPa] | 94 ksi [650 MPa] | 35% | 100 J | - |
| Max | - | 123 ksi [850 MPa] | - | - | 260 HB |
| ASTM | EN | WERKSTOFF NR. | NORSOK | JIS | AFNOR |
|---|---|---|---|---|---|
| A182 F44 | XCrNiMoN20-18-7 | 1.4547 | R11 to R15 | SUS312L | Z1CNDU20.18.06AZ |
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