AK-757Q

Standard: 

EN ISO 18275 AE695Z1.5Mn2NiMoB3 2

AWS A5.5 E10018M,

GB/T 5118-1995 E7515-G

Description: AK757Q is an ultra-low hydrogen and high toughness electrode with low-hydrogen sodium type coating, which adopts DC reverse connection. All-position welding is possible, with good overall performance.

Application:  lt is used for important low alloy seel bridge welding structures.

Typical Chemical Composition(%): 

C:0.12    Si:0.6    Mn:1.0-2.0    S:0.025    P:0.025

Ni:0.6-2.5     Mo:0.8    Cu:0.6    

Typical Mechanical Properties(%): 

Tensile strength (MPa) : ≥740

Yield Stress (MPa) :  ≥640

Elongation (%) :  ≥13J

Impact values (J)  :  ≥47J/-40℃

Recommended welding parameters: 

2.5mm:  F/H-70-110A      V/OH-50-80A

3.2mm:  F/H-90-130A      V/OH-80-110A

4.0mm:  F/H-140-180A    V/OH-130-170A

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