INEFIL B9

Solid Wire for welding 9.0% Cr.1.0% Mo Mod. steels P91

Solid wire cooper free AWS A 5.28: ER90S-B9 for welding P91 type steels. The presence of niobium, vanadium and nitrogen improve the thermal properties of creep resistance. Used in power plants fueled by fossil fuels.
Classifications
  • AWS A 5.28: ER90S-B9
  • EN ISO 21952-A: G CrMo91
Finishes
  • Copper free
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Copper-free solid wire suitable for the welding of creep resistant steel. It will find applications in petro-chemical industry for welding P91 steels. Long term creep properties get improved thanks to small additions of niobium, vanadium and nitrogen. This wire is designed for elevated temperature service up to 650°C. It is used in fossil fuelled power generating plants for components such as headers, main steam piping and turbine casings. To be used under the shield of Ar 95%+CO2 5%.

C 0.09
Si 0.25
Mn 0.60
Cr 8.80
Mo 0.95
V 0.20
Ni 0.65
N 0.05
Nb 0.06
M12
Yield strength 590 (T) MPa
Tensile strength 680 (T) MPa
Elongation 19 (T) %
Impact test Kv (R.T.) 60 J (T)
Diameter (mm) Volts Ampere
0.8 16-28 60-200
1.0 17-32 80-260
1.2 18-34 100-360
1.6 19-38 130-450
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