IDENTIFICATION
Griduct 95B9, E 9015-B91
CLASSIFICATION
AWS / SFA 5.5: E9015-B91
APPROVALS
BHEL and IBR
CREEP TEST
Completed 40,000 hours at 600°C. Witnessed by IBR & LR.
DESCRIPTION
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) %
| C | Mn | Si | S | P | Cr | Mo | V | Nb | N | Al | Cu |
| 0.08 - 0.12 | 0.70 max | 0.2 - 0.30 | 0.01 | 0.010 | 8.0 - 10.0 | 0.9 - 1.20 | 0.15 - 0.25 | 0.02 - 0.07 | 0.02 - 0.07 | 0.02 | 0.04 |
| max | max | max | max |
MECHANICAL PROPERTIES PWHT : 760°C. for 2 hours.
| UTS (MPa) | YS at 0.2% offset, MPa | EL (%) (L=4D) | CVN Impact Value | |
| Temp | Joules | |||
| 660 min | 580 min | 17 - 24 | 20°C | 47 min |
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 :
PACKING PARAMETERS
| Size (mm) | Length (mm) | Amps DC (+) | Packing / Box (kg) | Packing / Box (Pcs) |
| 2.5 | 350 | 60 - 90 | 5 x 4 = 20 | 160 x 4 = 640 |
| 3.15 / 3.20 | 350 | 90 - 140 | 5 x 4 = 20 | 110 x 4 = 440 |
| 4 | 350 | 130 - 180 | 5 x 4 = 20 | 70 x 4 = 280 |
| 5 | 350 | 160 - 220 | 5 x 4 = 20 | 45 x 4 = 180 |