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XM-21

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SA-276 XM-21 A 240 S30452
#XM-21 #S30452

Description

USA UNS SAE J 405 (1998) , XM-21 Specialsteel Chemical compositions of SAE wrought stainless steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: XM-21
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel XM-21 Austenite UNS USA Chemical compositions of SAE wrought stainless steels

Chemical composition(mass fraction)(wt.%) of the 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 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)
372 (≥) 215 (≥) 13 23 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade 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
11 - -     0.11 -  
129 413 - 23.3 232   -  
391 - 32 23.2   424 344

Heat Treatment of steel grade XM-21

Heat treated : 1951°C - 1562°C

Technological Curves of steel grade XM-21

Cross Reference Table (Equivalent Grade) of XM-21

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

Relevant standard of XM-21

SAE J 405 (1998) Chemical compositions of SAE wrought stainless steels SAE-J-405--(1998)-.pdf
SA-276 XM-21 A 240 S30452
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