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China JB 30Mn2 汽轮发电机集电环锻件.技术条件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 30Mn2 / 30Mn2
Category Grade Standard Region/Area Standard Content
Metals 30Mn2 JB/T 11028 China 汽轮发电机集电环锻件.技术条件

Chemical composition(mass fraction)(wt.%) of the 30Mn2

Element Min Max Similar
C 0.2700 0.3400 -
Mn 1.4000 1.8000 -
Si 0.1700 0.3700 -
P - 0.0300 -
S - 0.0300 -

Mechanical Properties of steel grade 30Mn2

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)
627 (≥) 354 (≥) 23 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 30Mn2

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 - -     0.42 -  
278 939 - 13.3 333   -  
112 - 34 22.2   123 241

Heat Treatment of steel grade 30Mn2

Heat treated : 1353°C - 1273°C

Technological Curves of steel grade 30Mn2

Cross Reference Table (Equivalent Grade) of 30Mn2

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