AK-55QNH
Standard:
GB/T 8110 ER55-G
Description: AK55QNH is a low-alloy steel gas shielded solid welding wire. The weld has excellent atmospheric corrosion resistance, and its service life meets the needs of various specific climatic conditions. The weld metal has excellent mechanical properties and good crack resistance.
Application: Used for welding of important bridge corrosion-resistant steel such as Q420NH, etc..
Typical Chemical Composition(%):
C:0.10 Mn:0.6-1.20 P:0.025 S:0.020 Si:0.60 Cu: 0.20-0.50 Ni: 0.20-0.60 Cr: 0.30-0.90
Typical Mechanical Properties(%):
Test Item Tensile strength (MPa) Yield Stress (MPa) Elongation (%) Impact values (J)
Standard ≥500 ≥450 ≥22 ≥47J/-40℃
Typical Value 608 510 26 88
Recommended welding parameters:
0.8mm:F/H-50-180A / V(OH)-50-100A
1.0mm:F/H-80-250A / V(OH)-70-160A
1.2mm:F/H-100-360A / V(OH)-80-220A
1.6mm:F/H-250-500A
