A 240 Type XM-17 Stainless Steels to A 240/A 240M (2012)

A 240 Type XM-17 - Specification & Application

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

Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications

Chemical composition(wt.%) of A 240 Type XM-17 grade: to A 240/A 240M (2012)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 0.75
Mn 7.50 9.00
P - 0.045
S - 0.03
Cr 17.5 22.0
Ni 5.00 7.00
Mo 2.00 3.00
N 0.25 0.50

A 240 Type XM-17 - Detail

A 240 Type XM-17

Mechanical properties of grade A 240 Type XM-17 A 240/A 240M (2012)

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)
424 (≥) 623 (≥) 21 42 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical properties of grade A 240 Type XM-17 A 240/A 240M (2012)

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
573 (≥) 112 (≥) 41 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 343
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
859 455 443
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