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Description

1.2740 Tool Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel: 1.2740

Chemical composition(mass fraction)(wt.%) of the 1.2740

 

 

 

Si 
Mn 
 P
 S
Cr   Ni  Mo  Other
 0.24-0.32  0.30-0.50  0.20-0.40  0.030  0.030  0.60-0.90  2.30-2.60  0.50-0.70  V  0.25-0.32

Mechanical Properties of steel grade 1.2740

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)
567 (≥) 367 (≥) 34 43 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade 1.2740

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
33 - -     0.43 -  
941 667 - 12.3 123   -  
871 - 13 14.2   432 334

Heat Treatment of steel grade 1.2740

Heat treated : 1846°C - 1873°C

Technological Curves of steel grade 1.2740

Cross Reference Table (Equivalent Grade) of 1.2740

Grade Standard Country Application
1.2740 DIN Germany Hot working alloy tool steel

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