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A542 Type E Class 4

America ASTM A542TypeEClass4 压力容器用经回火和淬火的铬钼、铬钼钒及铬钼钒钛硼合金钢板 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals A542 Type E Class 4 ASTM A542/A542M America 压力容器用经回火和淬火的铬钼、铬钼钒及铬钼钒钛硼合金钢板

Chemical composition(mass fraction)(wt.%) of the A542 Type E Class 4

Element Min Max Similar
C 0.0800 0.1800 -
Mn 0.2500 0.6600 -
P - 0.0250 -
S - 0.0100 -
Si - 0.1500 -
Ni - 0.2800 -
Cr 2.6300 3.3700 -
Mo 0.8500 1.1500 -
Cu - 0.2800 -
V 0.1800 0.3300 -
Cb 0.0100 0.7500 -
Other - - -

Mechanical Properties of steel grade A542 Type E Class 4

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)
858 (≥) 594 (≥) 11 43 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade A542 Type E Class 4

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 - -     0.22 -  
977 618 - 21.3 114   -  
457 - 32 43.2   321 211

Heat Treatment of steel grade A542 Type E Class 4

Heat treated : 1818°C - 1278°C

Technological Curves of steel grade A542 Type E Class 4

Cross Reference Table (Equivalent Grade) of A542 Type E Class 4

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