1.4926 Stainless Steels to SEW 555

1.4926 - Specification & Application

  • SEW 555 - Steels for larger forgings for components in turbine and generator installations

Steels for larger forgings for components in turbine and generator installations

Chemical composition(wt.%) of 1.4926 grade: to SEW 555

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.20 0.26
Si - 0.50
Mn 0.30 0.80
P - 0.025
S - 0.020
Cr 11.00 12.50
Mo 0.80 1.20
Ni 0.30 0.80
V 0.25 0.35

1.4926 - Detail

Steels for larger forgings for components in turbine and generator installations of 1.4926

Mechanical properties of grade 1.4926 SEW 555

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)
466 (≥) 248 (≥) 12 21 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical properties of grade 1.4926 SEW 555

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
226 (≥) 173 (≥) 24 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 442
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
833 153 696

Equivalent Grade

Equivalent Products

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