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21 CrMoV 5-7

Germany DIN 21CrMoV5-7 steels and nickel alloys for fasteners with specified elevated and/or low temperature properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 21CrMoV5-7 / 21 CrMoV 5-7
Category Grade Standard Region/Area Standard Content
Metals 21 CrMoV 5-7 DIN EN 10269 Germany steels and nickel alloys for fasteners with specified elevated and/or low temperature properties

Chemical composition(mass fraction)(wt.%) of the 21 CrMoV 5-7

Element Min Max Similar

Mechanical Properties of steel grade 21 CrMoV 5-7

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)
126 (≥) 833 (≥) 22 31 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade 21 CrMoV 5-7

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 - -     0.43 -  
591 649 - 32.3 242   -  
242 - 14 24.2   121 141

Heat Treatment of steel grade 21 CrMoV 5-7

Heat treated : 1196°C - 1375°C

Technological Curves of steel grade 21 CrMoV 5-7

Cross Reference Table (Equivalent Grade) of 21 CrMoV 5-7

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