E8018-B8
AWS A5.5 E8018-B8 | ASME SFA 5.5 E8018-B8 F-4, A=5
8018-B8 (formerly 505 family) is a low hydrogen covered electrode commonly used in the oil and chemical industries, tubes, heat resistant steel and where base metal such as 9% Cr, 1% Mo steels are found. Typical base metals found in this group are ASTM grades:A182-F9, A336-F9, A199-T9, A200-T9, A213-T9, A335-P9, A369-FP9, A426-CP9, A217-C12, and A387- Gr9. Idea for high pressure hydrogen service . Our coating yields a stable arc that has low spatter, high deposition, low moisture absorption, with a great re-strike and easy flux removal.. As with many Cr/Mo base metal alloys using a preheat and post heat will ensure best quality crack free welds.
TYPICAL WIRE CHEMISTRY (%)
- | AWS SPEC | TYPICAL WELD METAL |
|---|---|---|
C | 0.05-0.10 | 0.059 |
Mn | 1.00 | 0.519 |
Si | 0.90 | 0.207 |
P | 0.03 | 0.015 |
S | 0.03 | 0.008 |
Ni | 0.40 | 0.087 |
Cr | 8.00-10.50 | 8.122 |
Mo | 0.85-1.20 | 0.897 |
Typical weld metal properties
- | AWS Spec | Weld Metal |
|---|---|---|
Ultimate tensile strength (psi) | 80,000 min | 101,900 |
Yield Strength (psi) | 67,000 min | 90,300 |
Elongation in 2" (%) | 19% min | 21% |