0Cr17Ni7Al Stainless Steels to GB 4238 (1992)

0Cr17Ni7Al - Specification & Application

  • GB 4238 (1992) - Heat-resisting steel sheets and plates
  • GB/T 1220 (1992) - Stainless steel bars
  • GB/T 1221 (1992) - Heat-resisting steel bars
  • GB/T 3280 (2007) - Cold rolled stainless steel sheets and plates
  • GB/T 4231 (1993) - Cold rolled stainless steel strips for springs
  • GB/T 4237 (1992) - Hot rolled stainless steel sheets and plates
  • GB/T 4239 (1991) - Cold rolled stainless steel and heat resisting steel strips
  • GB/T 4356 (2002) - Stainless steel wire rods

Heat-resisting steel sheets and plates

Chemical composition(wt.%) of 0Cr17Ni7Al grade: to GB 4238 (1992)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.09
Si - 1.00
Mn - 1.00
P - 0.035
S - 0.030
Ni 6.50 7.75
Cr 16.00 18.00
Cu - 0.50
Al 0.75 1.50

0Cr17Ni7Al - Detail

0Cr17Ni7A1

Mechanical properties of grade 0Cr17Ni7Al GB 4238 (1992)

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)
683 (≥) 955 (≥) 41 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 334

Physical properties of grade 0Cr17Ni7Al GB 4238 (1992)

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
673 (≥) 637 (≥) 44 42 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 244
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
573 862 435
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