Characteristics of the material 4KH2NMF ( 4H2NMF, 4Х2НМФ ).
4KH2NMF ( 4H2NMF, 4Х2НМФ )
Die tool steel
Chemical composition in % of the material 4KH2NMF ( 4H2NMF, 4Х2НМФ ) .
0.36 - 0.42
0.17 - 0.37
0.5 - 0.8
0.8 - 1.1
2 - 2.5
0.4 - 0.6
0.15 - 0.2
Temperature of critical points of the grade 4KH2NMF ( 4H2NMF, 4Х2НМФ ).
Ac1 = 760 , Ac3(Acm) = 820
Brinell hardness of the material 4KH2NMF ( 4H2NMF, 4Х2НМФ ) (normalize) ,
HB 10 -1= 321 - 364 MPa
Technological properties of the material 4KH2NMF ( 4H2NMF, 4Х2НМФ ) .
- welding is done without heating and subsequent heat treeting
- welding is possible under heating up to 100-120 grade and subsequent heat treeting
- obtaining the quality welding needs the additional operations:heating up to 200-300 grade; the heat treeting ia annealing
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