GJ-EM12K is a premium medium-manganese, silicon-killed solid wire strictly complying with AWS A5.17 EM12K. The optimized Mn/Si ratio provides excellent deoxidation, high tensile strength, and superior crack resistance.
1.4
1.2g/cm³
10-40 mesh, 12-60 mesh
25 kg plastic valve bags, 500/1000 kg large bags
| SiO₂ + TiO₂ | CaO + MgO | Al₂O₃ + MnO | CaF₂ |
| 20 - 30 | 20 - 30 | 35 - 45 | 5 - 15 |
| SiO₂ + TiO₂ | CaO + MgO | Al₂O₃ + MnO | CaF₂ |
| 20 - 30 | 20 - 30 | 35 - 45 | 5 - 15 |
| Wire Electrodesused | Yieldstrength ≥ MPa | Tensilestrength ≥ MPa | Elongation8%≥% | Impactvalues≥J (CVN) | ||
|---|---|---|---|---|---|---|
| +20°C | -20°C | -40°C | ||||
| EM12K | 415 | 510 | 32 | ≥130 | ≥100 | 50 |
| EH14 | 430 | 530 | 31 | ≥80 | ≥70 | 70 |
| H08Mn2MoA | 575 | 480 | 25 | 85 | ≥70 | |
Since it is a sintered flux, it is prone to absorbing moisture. It must be dried at a temperature of 300-350°C for 1-2 hours before use to prevent pores from forming in the weld. Unused flux should be put back into the oven for heat preservation.
Wire cleaning: The surface of the welding wire should be kept clean, free of oil, rust, and moisture.
Groove cleaning: The workpiece groove and the 20mm range on both sides need to be cleaned thoroughly to remove impurities such as water, oil, rust, and paint.
Parameter selection: Appropriate welding current, voltage, and speed should be selected according to the steel plate thickness, groove form, welding position, etc. It is recommended to refer to the parameter table provided by the flux manufacturer and conduct process evaluation. For high-speed welding up to 2.5 m/min, use optimized parameters such as 800-1200A current, 30-40V voltage, and multi-wire setups to maintain arc stability and bead quality.
Since it is a sintered flux, it is prone to absorbing moisture. It must be dried at a temperature of 300-350°C for 1-2 hours before use to prevent pores from forming in the weld. Unused flux should be put back into the oven for heat preservation.
Since it is a sintered flux, it is prone to absorbing moisture. It must be dried at a temperature of 300-350°C for 1-2 hours before use to prevent pores from forming in the weld. Unused flux should be put back into the oven for heat preservation.
Candouble-sided single-pass welding
Candouble-sided single-pass welding
Candouble-sided single-pass welding
Candouble-sided single-pass welding
Candouble-sided single-pass welding
Consistent Quality, Direct Factory Pricing.
GUJIN
100% batch consistency ensured by our advanced in-house QA lab.
GUJIN
20+ years mastering SAW metallurgical synergy for heavy industries.
GUJIN
Full OEM empowerment, from custom formulations to private labeling.
GUJIN
Massive automated capacity to stabilize your bulk supply chain.
GUJIN
100% batch consistency ensured by our advanced in-house QA lab.
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