AK-EF3
Standard：
EN ISO 26304-B:S 62A P 4 FB SUN2M33
AWS A5.23 F9A/P4-EF3
GB/T 36034 S 62A P 4 FB-SUN2M33
Description: EF3 is a low alloy high strength steel submerged arc welding wire. The content of S and P is low, and the mechanical properties are good.
Application: With AKJ616 flux, it is suitable for submerged arc welding of nuclear power, boiler, pressure vessel ASME SA508 Gr.3 Class 1, 13MnNiMoR and other steels.
Typical Chemical Composition(%):
C：0.17 Si：0.80 Mn：1.25-2.25 S: ≤0.030 P：≤0.030 Ni: 0.70-1.10 Mo: 0.40-0.65
Typical Mechanical Properties(%):
Tensile strength (MPa) : 620-760
Yield Stress (MPa) : ≥540
Elongation (%) : ≥20J
Impact values (J) : ≥27J/-40℃
