Details

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KL-718A1
Type of coating: Iron powder low hydrogen type
KL-718A1 is suitable for welding 490N/mm2 grade steel with。It is ideal for welding high temperature/pressure steel pipes, heat exchanger steel pipes, rolledsteel and forged steel

Classification


Application and Features 

• KL-718A1 is suitable for welding 490N/mm2 grade steel with 0.5% Mo
• It provides high deposition rate and good weldability
• It is ideal for welding high temperature/pressure steel pipes, heat exchanger steel pipes, rolled steel and forged 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. Preheat and interpass temperature: 100~200°C, PWHT: 600~635°C

Application
- It is ideal for welding high temperature/pressure steel pipes, heat exchanger steel pipes, rolled steel and forged steel

Typical Chemical Composition of Weld Metal (wt%)


Typical Mechanical Properties of Weld Metal


Size and Suggested Operation Range (AC or DC±)