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A 240 S21904

Description

USA SAE A 240/A 240M (2013), A 240 S21904 Specialsteel 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: A 240 S21904
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 240 S21904 Austenite SAE USA Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

Chemical composition(mass fraction)(wt.%) of the A 240 S21904

C Mn Si P S Cr Ni Mo N
≤0.04 8.00 -10.00 ≤1.00 ≤0.06 ≤0.03 19.00 -21.50 5.50 -7.50 ≤ ≥ 0.15 -0.40

Mechanical Properties of steel grade A 240 S21904

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)
578 (≥) 538 (≥) 41 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 313

Physical Properties of steel grade A 240 S21904

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
43 - -     0.22 -  
479 421 - 22.3 132   -  
791 - 24 31.2   121 314

Heat Treatment of steel grade A 240 S21904

Heat treated : 1293°C - 1673°C

Technological Curves of steel grade A 240 S21904

Cross Reference Table (Equivalent Grade) of A 240 S21904

Grade Standard Country Application
S21904
S21904
S21904

Relevant standard of A 240 S21904

A 240/A 240M (2013) Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications A-240-A-240M-(2013).pdf

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