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China GB ZT490 钻探用无缝钢管 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ZT490 / ZT490
Category Grade Standard Region/Area Standard Content
Metals ZT490 GB/T 9808 China 钻探用无缝钢管

Chemical composition(mass fraction)(wt.%) of the ZT490

Element Min Max Similar
S - 0.0300 -
P - 0.0300 -

Mechanical Properties of steel grade ZT490

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)
555 (≥) 919 (≥) 44 14 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade ZT490

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 - -     0.11 -  
163 846 - 12.3 413   -  
653 - 14 44.2   114 432

Heat Treatment of steel grade ZT490

Heat treated : 1251°C - 1777°C

Technological Curves of steel grade ZT490

Cross Reference Table (Equivalent Grade) of ZT490

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