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SA-240 Type 29-4

Description

USA AMS SA-240/SA-240M, SA-240 Type 29-4 Specialsteel Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SA-240 Type 29-4
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-240 Type 29-4 Precipitation-Hardening AMS USA Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

Chemical composition(mass fraction)(wt.%) of the SA-240 Type 29-4

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-240 Type 29-4

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)
695 (≥) 283 (≥) 34 41 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical Properties of steel grade SA-240 Type 29-4

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
31 - -     0.34 -  
321 923 - 31.3 231   -  
731 - 34 41.2   442 242

Heat Treatment of steel grade SA-240 Type 29-4

Heat treated : 1815°C - 1176°C

Technological Curves of steel grade SA-240 Type 29-4

Cross Reference Table (Equivalent Grade) of SA-240 Type 29-4

Relevant standard of SA-240 Type 29-4

SA-240/SA-240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications SA-240-SA-240M.pdf

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