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A 829 4140

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A 829 4137 A 829 4142
#29-4

Description

USA SAE A 829/A 829M (2011), A 829 4140 Specialsteel Alloy Structural Steel Plates and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 829 4140
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 829 4140 Precipitation-Hardening SAE USA Alloy Structural Steel Plates

Chemical composition(mass fraction)(wt.%) of the A 829 4140

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo
≤0.01 ≤0.20 ≤0.30 ≤ ≥ ≤ ≥ ≤0.15 28.00 -30.00 ≤ ≥ ≤0.15 ≤ ≥ ≤ ≥ ≤0.02 3.50 -4.20

Mechanical Properties of steel grade A 829 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)
816 (≥) 839 (≥) 23 23 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical Properties of steel grade A 829 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
24 - -     0.23 -  
154 234 - 23.3 131   -  
311 - 13 34.2   112 223

Heat Treatment of steel grade A 829 4140

Heat treated : 1979°C - 1788°C

Technological Curves of steel grade A 829 4140

Cross Reference Table (Equivalent Grade) of A 829 4140

Grade Standard Country Application
29-4
29-4C
29-4-2
29-4
29-4-2
29-4C
29-4
29-4-2
29-4
29-4-2
29-4C(S44735)
29-4-2(S44800)
X2CrMoTi29-4
X2CrMoTi29-4

Relevant standard of A 829 4140

A 829/A 829M (2011) Alloy Structural Steel Plates A-829-A-829M-(2011).pdf
A 829 4137 A 829 4142
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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