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ER90S-B9 is designed to weld high
temperature steels for hot hydrogen
service. This wire is suitable for 9%
Chromium steels such as P91, T91 and
F91. Applications include steam generation
and petrochemical equipment. This alloy
contains Vanadium and Niobium which
increases the resistance to strain, corrosion
and heat oxidation.
Applications
• Thermoelectric power plants
• Turbine rotors
• Petrochemical plants
AWS Specification
AWS A5.28/A5.28M:2005
AWS Classification ER90S-B9
Welding Current for MIG process
GMAW - DCEP
Typical Wire Chemistry
C 0.07 - 0.13
Mn 1.20
Si 0.15 - 0.50
P 0.010
S 0.010
Ni 0.80
Cr 8.00 - 10.50
Mo 0.85 - 1.20
V 0.15 - 0.30
Al 0.04
Cu 0.20
OTHER 0.50
Typical Mechanical Properties
(As Welded)
Yield Strength, ksi 60
Tensile Strength, ksi 90
Elongation%, min 16
Welding Positions
F,V,OH,H
Available Diameters MIG and
suggested Operating Range in Amps
.035" 100 - 150
.045" 150 - 200
Available Diameters TIG
.035", .045", 1/16", 3/32" & 1/8"
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this alloy >
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