UNS S31254 is a high-alloy austenitic stainless steel grade with excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. It is commonly available in plate, sheet, and strip forms for pressure vessels and demanding industrial applications.
| ASTM | EN | WERKSTOFF NR. | NORSOK | JIS | AFNOR |
|---|---|---|---|---|---|
| A182 F44 | XCrNiMoN20-18-7 | 1.4547 | R11 to R15 | SUS312L | Z1CNDU20.18.06AZ |
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 SHEET |
|---|
| UNS S31254 |
Final 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 [300MPa] | 94 ksi [650MPa] | 35% | 100J | - |
| max | - | 123 ksi [850MPa] | - | - | 260 HB |
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