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Speaking to a Welding Engineer today about a forthcoming job. Advised to use G4Si1 wire rather than G3Si1. (Old SG3/SG2).
Reading upon it...... TechnicAl I presume
Many believe SG3 or G4Si1 is higher grade, better quality. It isn’t its just different. Because of the higher Si it flows better and for this reason many welders prefer it to SG2. SG3 also carries current better and will produce welds of acceptable appearance on settings at least 100 amps higher than SG2, with advantageous affect on productivity. This grade also appears the best suited to some of the new electronic wave form control equipment such as Surface Tension Transfer (STT).
Is there much difference in structural performance between the two?
2 quid a roll more expensive so it can't be much different
Reading upon it...... TechnicAl I presume
Many believe SG3 or G4Si1 is higher grade, better quality. It isn’t its just different. Because of the higher Si it flows better and for this reason many welders prefer it to SG2. SG3 also carries current better and will produce welds of acceptable appearance on settings at least 100 amps higher than SG2, with advantageous affect on productivity. This grade also appears the best suited to some of the new electronic wave form control equipment such as Surface Tension Transfer (STT).
Is there much difference in structural performance between the two?
2 quid a roll more expensive so it can't be much different
