General Description
Alloy 31 (UNS N08031/1.4562) is a iron-nickel-chromium-molybdenum stainless steel with nitrogen and cupper additions. Alloy 31 has proven itself to be suitable particularly in the chemical and petrochemical industries, in ore digestion plants, in marine engineering and in oil and gas extraction.
Alloy 31 has outstanding corrosion resistance in alkaline and acidic halide containing media, excellent resistance to sulfuric acid and phosphoric acid, chlorine dioxide bleaching plants in paper production.
Chemical Composition
| Grade | Fe% | Ni% | Cr% | Mo% | Cu% | C% | Mn% | Si% | S% | P% | N% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 31 | Bal. | 30.0-32.0 | 26.0-28.0 | 6.0-7.0 | 1.0-1.4 | Max 0.015 | Max 2.0 | Max 0.3 | Max 0.01 | Max 0.02 | 0.15-0.2 |
Designations
UNS N08031
Werkstoff Nr. 1.4562
Specifications
Alloy 31 Bar: ASTM B581, B649
Alloy 31 Wire: ASTM B649
Alloy 31 Strip/Sheet/Plate: ASTM B625
Alloy 31 Pipe/Tube: ASTM B622
Physical Properties
Density：8.05 g/cm3
Melting Point: 1330℃
Mechanical Properties
Solution Annealed
Tensile: Min 650 MPa
Yield Rp0.2: Min 350 MPa
Elongation A5: Min 35%