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27 MnCrB 5 2

France AFNOR NF 27MnCrB52 钢淬火和回火作建筑用途 - 交货技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 27MnCrB52 / 27 MnCrB 5 2
Category Grade Standard Region/Area Standard Content
Metals 27 MnCrB 5 2 NF EN 10343 France 钢淬火和回火作建筑用途 - 交货技术条件

Chemical composition(mass fraction)(wt.%) of the 27 MnCrB 5 2

Element Min Max Similar

Mechanical Properties of steel grade 27 MnCrB 5 2

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)
321 (≥) 452 (≥) 44 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade 27 MnCrB 5 2

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
14 - -     0.24 -  
742 615 - 44.3 213   -  
745 - 13 22.2   334 331

Heat Treatment of steel grade 27 MnCrB 5 2

Heat treated : 1598°C - 1681°C

Technological Curves of steel grade 27 MnCrB 5 2

Cross Reference Table (Equivalent Grade) of 27 MnCrB 5 2

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