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China GJB D45MnB 炮弹用无缝钢管规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: D45MnB / D45MnB
Category Grade Standard Region/Area Standard Content
Metals D45MnB GJB 6482 China 炮弹用无缝钢管规范

Chemical composition(mass fraction)(wt.%) of the D45MnB

Element Min Max Similar
C 0.4200 0.4900 -
Si 0.1700 0.3700 -
Mn 1.1000 1.4000 -
P - 0.0250 -
S - 0.0250 -
Cr - 0.3000 -
Ni - 0.3000 -
Mo - 0.1500 -
Cu - 0.3000 -
B 0.0005 0.0035 -

Mechanical Properties of steel grade D45MnB

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)
493 (≥) 556 (≥) 11 11 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade D45MnB

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
32 - -     0.32 -  
356 764 - 24.3 124   -  
336 - 33 41.2   423 333

Heat Treatment of steel grade D45MnB

Heat treated : 1864°C - 1683°C

Technological Curves of steel grade D45MnB

Cross Reference Table (Equivalent Grade) of D45MnB

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