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4145

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America SAE 4145 Chemical compositions of SAE alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4145 / 4145
Category Grade Standard Region/Area Standard Content
Metals 4145 SAE J 404 America Chemical compositions of SAE alloy steels

Chemical composition(mass fraction)(wt.%) of the 4145

Element Min Max Similar

Mechanical Properties of steel grade 4145

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)
494 (≥) 394 (≥) 44 41 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade 4145

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
44 - -     0.43 -  
319 825 - 14.3 331   -  
359 - 33 31.2   313 114

Heat Treatment of steel grade 4145

Heat treated : 1346°C - 1457°C

Technological Curves of steel grade 4145

Cross Reference Table (Equivalent Grade) of 4145

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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