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HS 7-4-2-5

France AFNOR NF HS7-4-2-5 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: HS7-4-2-5 / HS 7-4-2-5
Category Grade Standard Region/Area Standard Content
Metals HS 7-4-2-5 NF A35-590 France 工具钢

Chemical composition(mass fraction)(wt.%) of the HS 7-4-2-5

Element Min Max Similar

Mechanical Properties of steel grade HS 7-4-2-5

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)
246 (≥) 841 (≥) 32 31 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade HS 7-4-2-5

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
21 - -     0.13 -  
875 676 - 21.3 321   -  
261 - 33 44.2   243 123

Heat Treatment of steel grade HS 7-4-2-5

Heat treated : 1686°C - 1716°C

Technological Curves of steel grade HS 7-4-2-5

Cross Reference Table (Equivalent Grade) of HS 7-4-2-5

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