B 275 GR20A Stainless Steels to B 275 (2005)

B 275 GR20A - Specification & Application

  • B 275 (2005) - Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought

Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought

Chemical composition(wt.%) of B 275 GR20A grade: to B 275 (2005)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.12
Si - 0.30
Mn - 0.80
Cr - 19.00
Ni - 14.00
Mo - -
Co - -
W - -
Al - -
Cu - -
Ti - -
Fe - remaining
Nb - 1.60

B 275 GR20A - Detail

Standard Practice for Codification of Certain Nonferrous Metals and Alloys, Cast and Wrought

Mechanical properties of grade B 275 GR20A B 275 (2005)

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)
618 (≥) 561 (≥) 32 33 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical properties of grade B 275 GR20A B 275 (2005)

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
993 (≥) 169 (≥) 12 22 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 243
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
698 749 422

Equivalent Products

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