Details

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KL-918B3
Type of coating: Iron powder low hydrogen type
KL-918B3 is suitable for welding Cr-Mo alloy steel

Classification


Application and Features 

• KL-918B3 is suitable for welding Cr-Mo alloy steel
• It provides high deposition rate and good weldability
• Weld metal contains 2.25%Cr-1%Mo，such as ASTM A387Gr.22 and JIS SCMV4
• It is ideal for welding high pressure steel pipes, heat exchanger steel pipes of boilers and steels for petro-chemical plants

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: 160~190°C, PWHT: 675~705°C

Application
- KL-916B3 is suitable for welding Cr-Mo alloy steel

Typical Chemical Composition of Weld Metal (wt%)


Typical Mechanical Properties of Weld Metal


Size and Suggested Operation Range (AC or DC±)