SOLID WIRE FOR CREEP RESISTING STEELS
GM 90S-B9, ER 90SB9
AWS/SFA 5.28: ER 90SB9
A non-coppered filler wire of high purity to match creep resisting steels of type 9CrMo modified with controlled additions of niobium, vanadium & nitrogen. Deposited weld metal meets X-ray quality.
CHEMICAL ANALYSIS (RANGE) %
MECHANICAL PROPERTIES (RANGE)
• These materials are used in components such as, headers, main steam piping and turbine rotors in power generating plant.
• Applications are also anticipated in oil refinery & petrochemical plant. Service temperature is normally 500-600°C, higher temperatures upto 650°C may be limited by parent HAZ properties.
MATERIALS TO BE WELDED
ASTM-ASME: A213 T91 (TUBE), A387 GRADE 91 (PLATE), A335 P91 (PIPE), A182, A336 F91 (FORGINGS).
DIN: X10CRMOVNB9 1 1.4903
PREHEAT AND INERPASS TEMPERATURE : 150 – 260°C
SHIELDING GAS : Argon + 2 to 5% CO2