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Alloy 31 
1.4562 – N08031

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Material description

Material 1.4562 is an austenitic iron-nickel-chromium-molybdenum alloy with additional copper and nitrogen. Thanks to this composition, 1.4562 (Alloy 31) has excellent resistance to corrosion and erosion corrosion in phosphorous environments.  

An overview of the properties of 1.4562: 

  • Excellent resistance to corrosive media  
  • Resistant to intergranular corrosion  
  • Resistant to seawater  
  • High resistance to pitting 

Applications

  • Chemical industry 
  • Flue gas desulphurisation  
  • Fertiliser industry  
  • Offshore technology 
  • Mining industry  
  • Environmental technology 
  • Oil industry 
  • Pulp and paper industry

Material data

Material no.: 1.4562
Name: Alloy 31
UNS no.: N08031
ASTM: B564 / B649
VdTÜV: 509
Other: SEW 400
Material type: Corrosion-resistant alloy
Data sheet

Chemical composition in %

ASTM B564/649VdTÜV Material Sheet 509SEW 400
Ni30.0 – 32.030.0 – 32.030.0 – 32.0
Cu1.0 – 1.41.0 – 1.41.00 – 1.40
FeRemainderRemainderRemainder
Mn, max.2.02.02.00
C, max.0.0150.0150.015
Si, max.0.30.30.30
S, max.0.0100.0100.010
Cr26.0 – 28.026.0 – 28.026.00 – 28.00
Mo6.0 – 7.06.0 – 7.06.00 – 7.00
P, max.0.0200.0200.020
N, max.0.15 – 0.250.15 – 0.250.15 – 0.25

Mechanical properties

Solution annealedBar | Forging
ASTM B649 | ASTM B564		Sheet
D ≤ 25 mm		Bar/forging
D ≤ 300 mm
Rm (MPa)≥ 650650 – 850650 – 850
Rp 0.2 (MPa)≥ 276≥ 280≥ 280
Rp 1.0 (MPa)≥ 310≥ 310
A (%)≥ 40≥ 40≥ 40
Av (J)≥ 150≥ 120*
* Optional

The specified values are non-binding guide values.

Data sheet

14562Download