SUH 661 Stainless Steels to G 4312 (2011)

SUH 661 - Specification & Application

  • G 4312 (2011) - Heat-resisting steel plate, sheet and strip

Heat-resisting steel plate, sheet and strip

Chemical composition(wt.%) of SUH 661 grade: to G 4312 (2011)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.08 0.16
Si - 1.00
Mn 1.00 2.00
P - 0.04
S - 0.03
Cr 20.00 22.50
Ni 19.00 21.00
Mo 2.50 3.50
W 2.00 3.00
Co 18.50 21.00
Nb 0.75 1.25
N 0.10 0.20

SUH 661 - Detail

Heat-resisting steel plate, sheet and strip

Mechanical properties of grade SUH 661 G 4312 (2011)

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)
394 (≥) 562 (≥) 33 24 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 232

Physical properties of grade SUH 661 G 4312 (2011)

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
874 (≥) 138 (≥) 12 11 31 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
237 578 759

Equivalent Grade

Equivalent Products

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