W30740 Stainless Steels

W30740 - Specification & Application

Austenitic Cr-Ni-Mn stainless steel composite welding filler metal (EC307)

Chemical composition(wt.%) of W30740 grade:

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 1.00
Mn 3.75 4.75
P - 0.045
S - 0.03
Ni 9.00 10.50
Cr 19.00 22.00
Al - -
Cu - -
Ti - -
Fe - -
N - -
Mo - -
V - -

W30740 - Detail

Austenitic Cr-Ni-Mn stainless steel composite welding filler metal (EC307)

Mechanical properties of grade W30740

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)
139 (≥) 534 (≥) 31 42 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical properties of grade W30740

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
178 (≥) 884 (≥) 33 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
166 266 472
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