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A 240 Type XM-21

Description

USA SAE A 240/A 240M (2012) , A 240 Type XM-21 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 Type XM-21
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 240 Type XM-21 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 Type XM-21

C Si Mn P S Cr Ni N
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.0 -20.0 8.00 -10.5 0.16 -0.30

Mechanical Properties of steel grade A 240 Type XM-21

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)
897 (≥) 122 (≥) 31 34 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 422

Physical Properties of steel grade A 240 Type XM-21

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
42 - -     0.23 -  
884 245 - 22.3 233   -  
783 - 42 33.2   412 223

Heat Treatment of steel grade A 240 Type XM-21

Heat treated : 1576°C - 1625°C

Technological Curves of steel grade A 240 Type XM-21

Cross Reference Table (Equivalent Grade) of A 240 Type XM-21

Grade Standard Country Application
XM-21
XM-21J
S30452
S30452
S30452
304HN(S30452)

Relevant standard of A 240 Type XM-21

A 240/A 240M (2012) Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications A-240-A-240M--(2012)-.pdf

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