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SA-29 Grade 40L27

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SA-29 Grade 40L24 SA-29 Grade 40L28
#29-4

Description

USA AMS SA-29/SA-29M, SA-29 Grade 40L27 Specialsteel Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SA-29 Grade 40L27
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-29 Grade 40L27 Precipitation-Hardening AMS USA Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

Chemical composition(mass fraction)(wt.%) of the SA-29 Grade 40L27

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 SA-29 Grade 40L27

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)
838 (≥) 827 (≥) 24 44 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade SA-29 Grade 40L27

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
23 - -     0.44 -  
553 731 - 44.3 341   -  
864 - 13 11.2   142 223

Heat Treatment of steel grade SA-29 Grade 40L27

Heat treated : 1134°C - 1271°C

Technological Curves of steel grade SA-29 Grade 40L27

Cross Reference Table (Equivalent Grade) of SA-29 Grade 40L27

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 SA-29 Grade 40L27

SA-29/SA-29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for SA-29-SA-29M.pdf
SA-29 Grade 40L24 SA-29 Grade 40L28
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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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