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30CrMnSiA

China GJB 30CrMnSiA 火炮零件用无缝钢管规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 30CrMnSiA / 30CrMnSiA
Category Grade Standard Region/Area Standard Content
Metals 30CrMnSiA GJB 6483 China 火炮零件用无缝钢管规范

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

Element Min Max Similar
C 0.2800 0.3500 -
Mn 0.8000 1.1000 -
Si 0.9000 1.2000 -
Cr 0.8000 1.1000 -
Ni - 0.4000 -
S - 0.0250 -
P - 0.0250 -
Cu - 0.2500 -
W - 0.2000 -
Mo - 0.1500 -
V - 0.0500 -
Ti - 0.0300 -
C 0.2800 0.3500 -
Mn 0.8000 1.1000 -
Si 0.9000 1.2000 -
Cr 0.8000 1.1000 -
Ni - 0.4000 -
S - 0.0250 -
P - 0.0250 -
Cu - 0.2500 -
W - 0.2000 -
Mo - 0.1500 -
V - 0.0500 -
Ti - 0.0300 -
C 0.2800 0.3400 -
Si 0.9000 1.2000 -
Mn 0.8000 1.1000 -
P - 0.0250 -
S - 0.0200 -
Cr 0.8000 1.1000 -
Ni - 0.3000 -
Mo - 0.1000 -
Cu - 0.2500 -

Mechanical Properties of steel grade 30CrMnSiA

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)
421 (≥) 251 (≥) 21 14 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade 30CrMnSiA

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
13 - -     0.44 -  
128 428 - 22.3 243   -  
882 - 21 23.2   321 241

Heat Treatment of steel grade 30CrMnSiA

Heat treated : 1523°C - 1791°C

Technological Curves of steel grade 30CrMnSiA

Cross Reference Table (Equivalent Grade) of 30CrMnSiA

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