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


UNS N08031

Werkstoff Nr. 1.4562


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%

    Request a Quote

    Fill in our online form to get a fast quote. for more general enquiries please email us at