Griduct 95B9, E 9015-B91
AWS / SFA 5.5: E9015-B91
BHEL and IBR
Completed 40,000 hours at 600°C. Witnessed by IBR & LR.
Non-synthetic Hydrogen controlled, heavy coated basic type electrode depositing 9Cr-1Mo-0.2V-N-Nb alloyed weld metal.
Deposited weld metal has improved creep strength toughness and fatigue life and oxidation and corrosion resistance at elevated temperature upto 620°C.
WELD METAL ANALYSIS (RANGE) %
MECHANICAL PROPERTIES PWHT : 760°C. for 2 hours.
HARDNESS (PWHT) : 240 BHN (approximately).
DIFFUSIBLE H2 CONTENT : < 4 ml/100gm weld metal.
MICROSTRUCTURE : In PWHT condition, the microstructure consists of tempered martensite.
REDRYING TEMPERATURE FOR ELECTRODES : 350°C / 2 hrs
WELDING POSITION :