AWS A5.4 : E310
▶︎ Characteristics:
LKE-NiCrFe-2 is a low hydrogen type and nickel-based covered electrode. The welding can be done in all position with good X-ray soundness and good crack resistance. The weld metal provides excellent mechanical properties which can satisfy the requirements of API and ASME for LNG tanks.
▶︎ Applications:
It is suitable for welding of ASTM B163/166/167/168,Inconel600,cryogenic steels, martensitic to austenitic steels, dissimilar steels etc.
▶︎ Notes on Usage:
1. Dry the electrode at 350-400°C for 30-60 minutes.
2. Use small amperage and keep the arc as short as possible.
3. Keep the interpass at 150°C.
4. Take back-step method to prevent blowhole at arc starting.
▶︎ Classification:
AWS A5.11 ENiCrFe-2
JIS Z3224 DNiCrFe-2
▶︎ Welding position:
▶︎ Typical chemical composition of weld metal (wt%)
| C | Mn | Si | P | S | Cr | Ni | Nb | Fe | Mo |
| 0.08 | 1.9 | 0.4 | 0.009 | 0.008 | 14.2 | 68 | 1.76 | 9.2 | 2.4 |
▶︎ Typical mechanical properties of weld metal
| TS N/mm² | EL % | IV -196°C J |
| 595 | 43 | 72 |
▶︎ Sizes and recommended current range (AC or DC+)
| Diameter (mm) | 2.6 | 3.2 | 4.0 | |
| Length (mm) | 300 | 350 | 350 | |
| Amps | F | 60-90 | 70-120 | 100-150 |
| V&OH | 55-80 | 65-110 | 80-130 | |
| Weight per pack(kg) | 5 | 5 | 5 | |
| Weight per carton (kg) | 20 | 20 | 20 | |
