PX5, PX-5, P20, 4140

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PX5, PX-5, P20, 4140

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.

Category Class Grade Type Standard Country Application
Steel Grades Specialsteel 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)
119 (≥) 751 (≥) 31 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

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
21 – –     0.41 –  
564 581 – 32.3 322   –  
585 – 31 11.2   341 143

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

Heat treated : 1561°C – 1394°C

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

Cross Reference Table (Equivalent Grade) of PX5, PX-5, P20, 4140

Grade Standard Country Application
ASTM P20
TP201
TP201
TP201
TP201
TP201
TP201
ASTM P20
BP20
BP20
S41400
NV7 (4140)
H41400
S41400
AISI 4140
SAE 4140
UNS G41400
AISI TS4140
ASTM 4140
UNS G41400