Low Alloy Electrodes for Low Temperature services
CLASSIFICATION : AWS/SFA-5.5: E 7018-A1
IS-1395: E 49BA 126Fe
CHARACTERISTICS : An iron powder, hydrogen controlled medium heavy coated electrode producing 0.50% Mo weld deposit. Electrode has high welding efficiency coupled with creep resistance properties at 525°C temperature and has excellent mechanical properties.
APPLICATION :
1) Suitable for high pressure boiler tubes and plates.
2) Fabrication for welding 0.50% Mo and 1% Cr-0.5% Mo steels used for elevated temperature services up to 525°C.
3) suitable for fine grained and creep resistant steel welding.
RE-DRY CONDITION : Re-Dry the electrode at 250°C-300°C for one hour, for best results.
|
C |
Mn |
Si |
S |
P |
Mo |
|
0.12 max. |
0.90 Max |
0.60 Max |
0.030 Max |
0.030 Max |
0.40-0.65 |
| YS (N/mm²) | UTS (N/mm²) | EL % (l=4d) | CHARPY “V” NOTCH IMPACT AT |
| 390 Min | 490 Min | 22 Min | +27°C : 140 J (Min.) |
| Size(mm) (DXL) | Size(inch) (DXL) | Current Condition (DC+/AC 70V) | No. of Pcs./pkt. | No. of Pcs./Case |
| 2.50/ 2.40 X 350 | 3/ 32” X 14” | 70-100 | 170 | 640 |
| 3.15/ 3.20 X 450 | 1/ 8” X 18” | 100-130 | 110 | 440 |
| 4.00 X 450 | 5/ 32” X 18” | 140-180 | 72 | 288 |
| 5.00X450 | 3/ 16” X 18” | 190-230 | 50 | 200 |
