19MnB4 Steel

Steel name: 19MnB4
Table No.: 1723
DIN designation: 19MnB4
Mat.No. (Wr.Nr.) designation: 1.5523
AISI/SAE designation: 15B21H
EN designation: 19MnB4
UNI designation: 19MnB4
AFNOR designation: 19MnB4
BS designation: 170H20
GOST designation: 20G2R
GB designation: ML20MnB
Chemical composition in weight %: 0.17-0.24% C, max. 0.40% Si, 0.80-1.15% Mn, max. 0.030% P, max. 0.035% S, min. 0.020% Al, 0.0008-0.0050% B
Steel group: Structural steels
Applications: No data
Comment: Ac1=710 C, Ac3=830 C, Ms=440 C, Mf=220 C.
Reference: Not shown in this demo version.

Heat Treatment
Quenching: 850-890 C/polymer, water
Tempering: 450-650 C/air
Hardenability test
Quenching: 920 C/water

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Other Steel Data links:
Carbides in Steel
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Etchants Database
Hardenability Calculating Service
Macro Defects in Steel
Non-Metallic Inclusions in Steel
Tempering Diagrams of Steels

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