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1.2744

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57NiCrMoV7-7 28NiMo17
#1.2744

Description

Germany DIN 1.2744 Hot working alloy tool steel and 1.2744 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: 1.2744
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy 1.2744 DIN Germany Hot working alloy tool steel
1.2714
26NiCrMoV5
1.2726
X50NiCrWV13-13
1.2731
28NiCrV5
1.2737
28NiCrMoV10
1.2740
57NiCrMoV7-7

Chemical composition(mass fraction)(wt.%) of the 1.2744

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) V(%)
0.55-0.60 0.15-0.35 0.60-0.80 Max 0.035 Max 0.035 0.90-1.20 1.50-1.80 0.70-0.90 0.07-0.12

Mechanical Properties of steel grade 1.2744

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
782 (≥) 287 (≥) 21 21 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade 1.2744

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
24 - -     0.12 -  
225 579 - 41.3 423   -  
932 - 14 23.2   211 333

Heat Treatment of steel grade 1.2744

Heat treated : 1424°C - 1111°C

Technological Curves of steel grade 1.2744

Cross Reference Table (Equivalent Grade) of 1.2744

Grade Standard Country Application
1.2744 DIN Germany Hot working alloy tool steel
57NiCrMoV7-7 28NiMo17
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Jiangyou Longhai Special Steel Co.,Ltd.

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