AK-EF1
Standard：
EN ISO 26034-A:S 55 4 FB(S 3NiMo)
AWS A5.23 F9A/P4-EF1
GB/T 36034 S 62A / P 4 FB-SUM2M2
Description: Submerged arc welding wire for 620MPa high-strength steel, the main component conta_x0002_ins 1.3%Ni— 0.3%Mo; the arc combustion is stable during weld-ing, the slag removal is easy, and the weld bead is beautiful; the weld metal has ex-cellent mechanical properties and high X- ray qualification rate.
Application: For welding of large power stations, boilers, high pressure vessels, steam pipes, etc..
Typical Chemical Composition(%):
C：0.07-0.15 Si：0.15-0.35 Mn：0.90-1.70 S: ≤0.015 P：≤0.020 Ni: 0.95-1.70 Mo: 0.25-0.55
Typical Mechanical Properties(%):
Tensile strength (MPa) : 550-700
Yield Stress (MPa) : ≥470
Elongation (%) : ≥20J
Impact values (J) : ≥54J/0℃
