Specifications:
- AWS: A5.29 : E 81T1-Ni1M JH4
DESCRIPTION AND APPLICATION
- ZIKA 81NI-LT1 is a gas-shielded flux cored wire for all-position welding.
- It is designed for welding 590N/mm2 high tensile steel for low temperatures.
- It provides good weldability with smooth bead appearance, less spatter and stable arc as well as good impact properties down to -50℃.
- It is also suitable for welding on construction machinery, shipbuilding, offshore, structures, bridges, storage tanks and piping.
- When the heat input is excessive, the impact value tends to be reduced.
- Therefore, perform welding with selecting proper heat input depending on the required impact value.
- Preheating at 50~150℃ is required depending on steels, plate thickness and restraint.
- Use DC(+) polarity.
TYPICAL ALL WELD METAL COMPOSITION [WT%]
| C | Mn | Si | P | S | Ni |
| 0.05 | 1.31 | 0.16 | 0.015 | 0.006 | 1.0 |
TYPICAL ALL WELD METAL MECHANICAL PROPERTIES
| Yield Sress [MPa] | Tensile Stress [MPa] | A5 [%] | Impact [ISO-V] |
| 580 | 630 | 26 | 100 J @ -40ºC 75 J @ -50ºC |
Use 75~80%Ar+25~20%CO2 as shielding gas.
| Parameter | Diameter | |
| 1.2 mm | 1.6 mm | |
| F | 150A~300A / 22V~34V | 200A~350A / 22V~36V |
| HF | 150A~300A / 22V~34V | 200A~350A / 22V~36V |
| VU | 150A~220A / 22V~26V | 160A~220A / 22V~26V |
| OH | 150A~220A / 22V~26V | 160A~220A / 22V~26V |
DC(+) polarity
