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China GB 490 船舶用碳钢和碳锰钢无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 490 / 490
Category Grade Standard Region/Area Standard Content
Metals 490 GB/T 5312 China 船舶用碳钢和碳锰钢无缝钢管

Chemical composition(mass fraction)(wt.%) of the 490

Element Min Max Similar
Total Others - 0.7000 -
Cu - 0.3000 -
Ni - 0.3000 -
Mo - 0.1000 -
Cr - 0.2500 -
P - 0.0250 -
S - 0.0200 -
Mn 0.8000 1.5000 -
Si - 0.3500 -
C - 0.2300 -
C - 0.2300 -
Si - 0.3500 -
Mn 0.8000 1.5000 -
S - 0.0350 -
P - 0.0350 -
Cr - 0.2500 -
Ni - 0.3000 -
Mo - 0.1000 -
Cu - 0.3000 -

Mechanical Properties of steel grade 490

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)
541 (≥) 384 (≥) 21 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade 490

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
41 - -     0.42 -  
517 696 - 22.3 234   -  
266 - 44 22.2   333 344

Heat Treatment of steel grade 490

Heat treated : 1532°C - 1346°C

Technological Curves of steel grade 490

Cross Reference Table (Equivalent Grade) of 490

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