Details

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KN-818C3
Type of coating: Iron powder low hydrogen type
KN-818C3 is suitable for welding 540N/mm2 grade steel for low temperature resistance
It is ideal for welding in ASTM A226 (A, B), A235 (F, G), A236(C, E, F) and A302 steel

Classification


Application and Features 

• (1) KN-818C3 is suitable for welding 540N/mm2 grade steel for low temperature resistance
• It provides high deposition rate, good mechanical properties and X-ray quality welds
• Weld metal contains 1.0%Ni-0.20%Mo and good impact properties at -40°C
• It is ideal for welding in ASTM A226 (A, B), A235 (F, G), A236(C, E, F) and A302 steel

Welding Position


Welding Instruction

1. Clean up the contaminations on the steel
2. Dry the electrodes at 350~400°C for 60 minutes before welding
3. Keep arc as short as possible. Take the back step method to prevent porosity at arc start and re-start. (Please refer to Appendix A)
4. High heat input will lower the impact value. Please carefully select the welding current
5. The preheat temperature for thick plate is 90~120°C

Application
- It is ideal for welding in ASTM A226 (A, B), A235 (F, G), A236(C, E, F) and A302 steel

Typical Chemical Composition of Weld Metal (wt%)


Typical Mechanical Properties of Weld Metal


Size and Suggested Operation Range (AC or DC±)