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PX5, PX-5, P20, 4140

Description

USA ASTM PX5, PX-5, P20, 4140 Specialsteel Uniform microstructure & hardness with extremely improved machined surface finish and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: PX5, PX-5, P20, 4140
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel PX5, PX-5, P20, 4140 Austenite ASTM USA Uniform microstructure & hardness with extremely improved machined surface finish

Chemical composition(mass fraction)(wt.%) of the PX5, PX-5, P20, 4140

C S Mn Cr Mo V
≤0.18 ≤0.04 ≤1.75 ≤2.2 ≤0.4 ≤0.1

Mechanical Properties of steel grade PX5, PX-5, P20, 4140

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)
596 (≥) 737 (≥) 12 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical Properties of steel grade PX5, PX-5, P20, 4140

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
43 - -     0.12 -  
842 229 - 12.3 212   -  
983 - 32 12.2   333 123

Heat Treatment of steel grade PX5, PX-5, P20, 4140

Heat treated : 1585°C - 1626°C

Technological Curves of steel grade PX5, PX-5, P20, 4140


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