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China GB ML30B 冷镦钢热轧盘条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ML30B / ML30B
Category Grade Standard Region/Area Standard Content
Metals ML30B GB/T 28906 China 冷镦钢热轧盘条

Chemical composition(mass fraction)(wt.%) of the ML30B

Element Min Max Similar
Al 0.0200 - -
B 0.0008 0.0035 -
S - 0.0250 -
P - 0.0250 -
Mn 0.9000 1.2000 -
Si 0.1000 0.3000 -
C 0.2300 0.2800 -
Ni - 0.2000 -
Cr - 0.2000 -
Cu - 0.2000 -
Si 0.1000 0.3000 -
S - 0.0250 -
P - 0.0250 -
Mn 0.9000 1.2000 -
C 0.2300 0.2800 -
B 0.0008 0.0035 -
Al 0.0200 - -

Mechanical Properties of steel grade ML30B

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)
591 (≥) 843 (≥) 42 13 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical Properties of steel grade ML30B

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 - -     0.41 -  
645 866 - 13.3 234   -  
389 - 14 42.2   211 112

Heat Treatment of steel grade ML30B

Heat treated : 1486°C - 1935°C

Technological Curves of steel grade ML30B

Cross Reference Table (Equivalent Grade) of ML30B

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