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Grade 19MnB4
Germany W-Nr. 1.5523
Corresponding Standard DIN 1654-4-1989
Classification Alloy Steel
19MnB4 Chemical Element Composition Content (%)
Component C Si Mn P S B
Minimum Value 0.17 - 0.8 - - 0.0008
Maximum Value 0.24 0.4 1.15 0.035 0.035 0.005
19MnB4 Mechanical Properties
diameter
d
mm		 Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Reduction of Area
ψ
%
Steel Spheroidizing Annealing (GKZ) or Spheroidizing Annealing + Peeling (GKZ+SH) ≤520 ≥62
Steel Cold drawing + Spheroidizing Annealing (K+GKZ) ≤500 ≥64
Steel Cold drawing + Spheroidizing annealing + Skinning (K+GKZ+K) ≤520 ≥62
New and Old Grade Replacement List
Corresponding Standard Grade
DIN 1654-4-1989
Grade
Germany W-Nr.
DIN EN 10263-4-2018
Grade
Germany W-Nr.
Old Grade
Old Grade
1 Approximate Comparison Table structural alloy steel
Germany European Standard
DIN EN/DIN W-Nr. EN Numerical Grade
19MnB4 1.5523 20MnB4 1.5525
2 Approximate Comparison Table structural alloy steel
Germany France European Standard United Kingdom
DIN EN/DIN NF EN/NF EN Numerical Grade BS EN/BS
19MnB4 20MB5 20MnB5 1.5530 170H20
19MnB4 Corresponding Standards(Same grade name, different standards)
1 EN 10269-2006
19MnB4 1.5523
2 NF EN 10269-1999
19MnB4 1.5523
3 DIN EN 10263-4-2018
(19MnB4) 20MnB4 1.5525 (1.5523)
4 DIN 1654-4-1989
19MnB4 1.5523

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