Carbon steel electrode with low hydrogen sodium coating. Can be weld for all-position with direct current only. It has excellent welding performance such as good arc stiffness, little spatter, easy slag removal etc.
It applicable for welding important structures of low alloy steel such as E36, D36 and A537, such as offshore platforms, ships and pressure vessels.
It can be used for all-position welding. AC/DC both can be applied.
It has good welding performance with smooth arc and effortless slag removal ability.
The deposited metal has low diffusion hydrogen content, excellent plasticity, low-temperature toughness and crack resistance.
| Chemical components of deposited metal (%) | ||||||||
| Test item | C | Mn | Si | S | P | Ni | Mo | V |
| Example value | 0.065 | 1.13 | 0.28 | 0.006 | 0.015 | 0.65 | 0.009 | 0.005 |
| Mechanical properties of deposited metal (620℃×1h heat treatment) | ||||
| Test item | Rm (MPa) | ReL/Rp0.2 (MPa) | A (%) | KV2(J) |
| -40℃ | ||||
| Example value | 550 | 450 | 30 | 138 |
Content of diffusible hydrogen in deposited metal: ≤5.0ml/100g (thermal conductivity method or mercury method)
X-ray flaw detection requirements: Level I
| Reference current (AC, DC+) | |||
| Welding electrode diameter (mm) | Φ3.2 | Φ4.0 | Φ5.0 |
| Welding current (A) | 80-120 | 130-180 | 170-240 |
