J557SLA、J557SLB Low Hydrogen Welding Rod AWS E8015-G Low Alloy Stick Electrodes for Arc Welding

Low Alloy Steel Welding Electrode

J557SLA、  J557SLB                                         

GB/T E5515-G

AWS E8015-G                           

Description: This is a low hydrogen sodium covered special electrode for aluminized steel. Use DCEP (direct current electrode positive), and can be welded in all positions with short arc operation. J557SLA can be directly welded without removing the aluminized layer on the groove surface before welding. But the J557SLB should remove the aluminized layer on the groove surface before welding.

Application: It is used for welding the aluminized steel structure under the corrosion medium of hydrogen sulfide, sulfur, ammonia, ammonium bicarbonate and hydrogen nitrogen with working temperature below 540°C. Such as boiler pipes, petroleum refining equipment, fertilizer equipment and steam pipes, etc.

 Chemical composition of weld metal(%):

 Mechanical properties of weld metal:

Diffusion hydrogen content of deposited metal: ≤6.0mL/100g (glycerin method)

X-ray inspection:  I grade

Recommended current:

Notice:

1. The electrode must be baked for 1 hour at around 350℃ before welding operation;

2. It is essential to clean up rusty, oil scale, water, and impurities on welding parts before welding.