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Germany DIN 20MnB5 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: 20MnB5 / 20 MnB 5
Category Grade Standard Region/Area Standard Content
Metals 20 MnB 5 DIN EN 10343 Germany 钢淬火和回火作建筑用途 - 交货技术条件

Chemical composition(mass fraction)(wt.%) of the 20 MnB 5

Element Min Max Similar
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mn 1.1000 1.4000 -
C 0.1700 0.2300 -
B 0.0008 0.0050 -
Si - 0.4000 -
S - 0.0350 -
P - 0.0250 -
Mn 1.1000 1.4000 -
C 0.1700 0.2300 -
B 0.0008 0.0050 -

Mechanical Properties of steel grade 20 MnB 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)
411 (≥) 111 (≥) 44 23 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade 20 MnB 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
22 - -     0.41 -  
882 822 - 34.3 143   -  
389 - 22 31.2   342 422

Heat Treatment of steel grade 20 MnB 5

Heat treated : 1649°C - 1426°C

Technological Curves of steel grade 20 MnB 5

Cross Reference Table (Equivalent Grade) of 20 MnB 5

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