NAS254NM Chemical Composition
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N |
| ≤0.030 | ≤1.00 | ≤2.00 | ≤0.040 | ≤0.030 | 23.5-25.5 | 20.0-22.0 | 6.0-7.0 | ≤0.75 | 0.18-0.25 |
Mechanical Properties at Room Temperature
| 0.2% proof stress [MPa] | Tensile strength [MPa] | Elongation [%] | Hardness [HRB] | ||
| Specification* (UNS N08367) | Sheet and strip | ≥310 | ≥690 | ≥30 | ≤100 |
| Plate | ≥310 | ≥655 | ≥30 | ≤241（HB) | |
| Example | Hot-rolled plate | 422 | 770 | 49 | 207(HB) |
Corrosion Resistance
Because NAS 254NM contains high concentrations of chromium and molybdenum and also contains nitrogen, it offers excellent pitting corrosion resistance and crevice corrosion resistance in chloride environments. NAS 254NM demonstrates excellent corrosion resistance under corrosion environments where it had been difficult to maintain corrosion resistance with conventional duplex stainless steels.
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زوج من: سبائك الصلب NAS224N
في المادة التالية : سبائك الصلب NAS185N
