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A 29 4340

Favorite Datasheet
A 29 4320 A 29 43L20
#29-4

Description

USA SAE A 29/A 29M (2012), A 29 4340 Specialsteel Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 29 4340
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 29 4340 Precipitation-Hardening SAE USA Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

Chemical composition(mass fraction)(wt.%) of the A 29 4340

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 29 4340

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)
159 (≥) 134 (≥) 14 33 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade A 29 4340

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
14 - -     0.32 -  
927 623 - 12.3 232   -  
184 - 12 23.2   212 321

Heat Treatment of steel grade A 29 4340

Heat treated : 1236°C - 1662°C

Technological Curves of steel grade A 29 4340

Cross Reference Table (Equivalent Grade) of A 29 4340

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 29 4340

A 29/A 29M (2012) Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for A-29-A-29M-(2012).pdf
A 29 4320 A 29 43L20
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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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