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Spain UNE 7-4-2-5 High speed steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 7-4-2-5 / 7-4-2-5
Category Grade Standard Region/Area Standard Content
Metals 7-4-2-5 UNE 36073 Spain High speed steels

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

Element Min Max Similar

Mechanical Properties of steel grade 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)
727 (≥) 441 (≥) 33 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 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
31 - -     0.24 -  
784 592 - 11.3 132   -  
563 - 43 32.2   333 341

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

Heat treated : 1962°C - 1294°C

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

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

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