Some features of Alloy 31 are:
| C ≤ % | Si ≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Mo % | Ni | 
| 0 – 0,015 | 0 – 0,3 | 0 – 2,0 | 0 – 0,02 | 0 - 0,01 | 26 - 28,0 | 6,0 – 7,0 | 30 – 32,0 | 
| N % | Cu ≤ % | Fe | |||||
| 0,15 – 0,25 | 1,0 – 1,4 | Rest | 
| Temperature Range | Material for wet corrosion | 
| Density | 8,1 g/cm³ | 
| Elongation at break of Alloy 31 | ≥ 40 % | 
| ISO-V notch impact toughness | ≥ 185 J/cm² at room temperature ≥ 140 J/cm² at -196°C | 
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