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America UNS T20843 热作工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: T20843 / T20843
Category Grade Standard Region/Area Standard Content
Metals T20843 -- America 热作工具钢

Chemical composition(mass fraction)(wt.%) of the T20843

Element Min Max Similar
V 1.8000 2.2000 -
Si 0.2000 0.4500 -
S - 0.0300 -
P - 0.0300 -
Mo 7.7500 8.5000 -
Mn 0.1500 0.4000 -
Cr 3.7500 4.5000 -
C 0.5000 0.6500 -

Mechanical Properties of steel grade T20843

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)
857 (≥) 647 (≥) 32 13 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 144

Physical Properties of steel grade T20843

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
22 - -     0.34 -  
937 538 - 42.3 344   -  
428 - 23 23.2   134 114

Heat Treatment of steel grade T20843

Heat treated : 1813°C - 1692°C

Technological Curves of steel grade T20843

Cross Reference Table (Equivalent Grade) of T20843

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