Comply to GB/T 5117 E5518-G P, equivalent to AWS A5.5 E8018-G
Instruction
E8018-G is a fine-grained steel electrode, the coating type is alkaline + iron powder type, suitable for all-position welding, AC and DC reverse connection, good welding process performance, small spatter, and beautiful shape.
Application
Used for welding medium carbon steel and low alloy steel structures such as 15MnTi and 15MnV.
Chemicals of Welding deposited metal
| Alloy wt% | C | Mn | Si | P | S |
| Standard | ≤0.12 | ≥1.00 | ≤0.80 | ≤0.035 | ≤0.035 |
| e.g. | 0.080 | 1.12 | 0.30 | 0.020 | 0.010 |
Mechanical properties of deposited metal (620±15)℃ x 1h heat treating
| Properties | Tensile
Strength/MPa |
Yield
Strength/MPa |
Elongation
/% |
Charpy Value KV2/J
(-40℃) |
| Standard | ≥550 | ≥460 | ≥17 | ≥27 |
| e.g. | 580 | 485 | 25 | 98 |
Recommended welding parameters
| Dia. | 2.5mm | 3.2mm | 4.0mm | 5.0mm |
| Current (A) | 70-110 | 100-140 | 140-170 | 190-240 |
Notes:
- The electrode should be baked for one to two hours in 350-400℃ before
- Clear away impurities of rust, oil, dirt, and moisture on the workpiece.
- Use short arc operation, narrow pass welding method.
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