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Alloy 28 
1.4563 – N08028

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Material description

Material 1.4563 is an austenitic stainless steel with a high chromium and nickel content. Thanks to its excellent corrosion resistance, material 1.4563 (Alloy 28) can be exposed to media containing sulphur and phosphorous even if these are contaminated with chloride or fluoride additives.  

Due to its nickel content, 1.4563 also has a good resistance to stress corrosion cracking and is resistant to seawater.  

An overview of the properties of 1.4563:  

  • Excellent corrosion resistance in media containing phosphorous and sulphur  
  • Resistant to stress corrosion cracking  
  • Resistant to seawater 

Applications

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

Material data

Material no.: 1.4563
Name: Alloy 28
UNS no.: N08028
ASTM: B709
VdTÜV: 483
Other: DIN EN 10088-3
Material type: Corrosion-resistant alloy
Data sheet

Chemical composition in %

ASTM B709VdTÜV Material Sheet 483DIN EN 10088-3
Ni29.5 – 32.530.0 – 32.030.0 – 32.0
FeRemainder
Cr26.0 – 28.026.0 – 28.026.0 – 28.0
Mo3.0 – 4.03.0 – 4.03.0 – 4.0
C, max.0.0300.0200.020
Si, max.1.000.700.70
Mn, max.2.502.002.00
P, max.0.0300.0200.030
S, max.0.0300.0150.010
Cu0.6 – 1.40.8 – 1.50.70 – 1.50
N, max.(≤ 0.15)*0.11
* For certain applications

Mechanical properties

Solution annealedSheetProfile steel
D ≤ 30 mm		Semi-finished/bar
D ≤ 160 mm | 160 mm < D ≤ 250 mm
Rm (MPa)≥ 500500 – 750500 – 750
Rp 0.2 (MPa)≥ 214≥ 220≥ 220
Rp 1.0 (MPa)≥ 250≥ 250
A (%)≥ 40l ≥ 40, q/t ≥ 35l ≥ 35 | q ≥ 30
Av (J)l ≥ 120, q/t ≥ 90l ≥ 100* | q ≥ 60*
Hardness (HRB)70 – 90
* Optional

The specified values are non-binding guide values.

Data sheet

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