XM-21 Stainless Steels to SAE J 405 (1998)

XM-21 - Specification & Application

  • SAE J 405 (1998) - Chemical compositions of SAE wrought stainless steels

Chemical compositions of SAE wrought stainless steels

Chemical composition(wt.%) of XM-21 grade: to SAE J 405 (1998)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.0 20.0
Ni 8.00 10.5
N 0.16 0.30

XM-21 - Detail

Chemical compositions of SAE wrought stainless steels

Mechanical properties of grade XM-21 SAE J 405 (1998)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
158 (≥) 925 (≥) 44 24 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical properties of grade XM-21 SAE J 405 (1998)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
124 (≥) 639 (≥) 44 11 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
394 179 148

Equivalent Products

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