Alloy 31

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alloy 31 grade alloy 31 uns n08031
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1.4562 Material

Material Designation 1.4562
Alloy Alloy 31
EN Material Symbol X1NiCrMoCu32-28-7
UNS N08031
Trademark Nicrofer 3127 hMo
ISO ISO 15156/MR 0175
VdTÜV Data Sheet 509

Main fields of application of Alloy 31

Alloy31 is an iron-nickel-chromium-molybdenum alloy with nitrogen addition. The alloy fills the gap between special alloyed austenitic stainless steels and nickel alloys. Alloy 31 has been proven especially in the chemical and petrochemical industry, in ore extractors, environmental and marine engineering as well as in oil and gas production.

Description of Alloy 31

Some features of Alloy 31 are:

- Excellent resistance to corrosion and erosion in phosphoric acid media

- Excellent resistance to general and localized corrosion in Chloridoxid bleaching plants in paper production

- Certification to ISO 15156/MR 0175 to level VI for sour gas applications in the oil and gas industry

- Excellent resistance in reducing and oxidizing media, as well as in boiling 67% nitric acid

- Excellent corrosion resistance in alkaline and acid halide media

- Approval for pressure vessels with operating temperatures from -196 to 550 ° C

- Good processability and weldability

-Excellent resistance to sulfuric acid in a highly concentrated form

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Chemical composition of Alloy 31

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

Characteristics of Alloy 31

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

Filler metal (for welding with 1.4562)

Welding Rod Nicrofer S 5923 – FM 59 (Material Designation 2.4607)

UNS N06059

Covered electrode 2.4609

UNS W86059

AWS A5.11: ENiCrMo-13

DIN EN ISO 14172:E Ni 6059 (NiCr23Mo16)

Stock programme

Sheets or Plates: 2 – 25 mm

 

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