Hydrogen controlled low alloy steel electrode designed for welding of weathering steels.
CLASSIFICATION : AWS A5.5 E7018-W1 H4
UNS No. W20018
UNS No. W20018
CHARACTERISTICS :
A Hydrogen controlled basic coated electrode for welding weathering steels. Weld metal relatively high resistance to atmospheric corrosion. Very low level of diffusible hydrogen in welds. Weld metal gives radiographic quality.
APPLICATION :
- Suitable for welding of weathering steels like SAILCOR-A & CORTEN A & B steels & equivalent.
- Medium tensile corrosion resistant structure steels and welding of high tensile steels.
- Electrode suitable for typical weathering steels, such as ASTM A 242 and A 588
RE-DRY CONDITION : Re-Dry the electrode at 350°C for 1 hrs before use.
HYDROGEN CONTENT : 4.00ml/100grams Weld metal
HYDROGEN CONTENT : 4.00ml/100grams Weld metal
ALL WELD CHEMICAL COMPOSITION %
| C | Mn | Si | Cr | Ni | Cu | V |
| 0.12 max. | 0.40-0.70 | 0.40-0.70 | 0.15-0.30 | 0.20-0.40 | 0.30-0.60 | 0.08 Max. |
ALL WELD MECHANICAL PROPERTIES :
| YS(N/mm²) | UTS(N/mm²) | EL %(l=4xd) | CHARPY “V” NOTCH IMPACT AT |
| 415 min. | 490 min. | 22 min. | -20°C : 50-80 J |
DIMENSION, CURRENT CONDITION & PACKING DATA
| Size(mm) (DXL) | Size(inch) (DXL) | Current Condition(DC+/AC 70V) | No. of Pcs./pkt. | No. of Pcs./Case |
| 2.50/ 2.40 | 3/ 32” | 70-100 | 170 | 640 |
| 3.15/ 3.20 | 1/ 8” | 100-140 | 110 | 440 |
| 4.00 | 5/ 32” | 150-190 | 72 | 288 |
| 5.00 | 3/ 16” | 200-250 | 50 | 200 |