Welding question

Another consideration with regard to excessive tensile strength is the creation of high residual stresses in the weld area that can lead to lower ductility and cracking in the heat affected zone of the weldment commonly referred to as the HAZ. In other words, the desired mechanical properties of the deposited weld metal and the mechanical properties of the parent metal should be taken into consideration when choosing the proper consumables.
Steve

The first two numbers in any rod numbers is the tensil strength. 7018 is the tensile strength, as in 70 = 70,000psi, so 11018 would be 110,000psi tensil strength.

The next number is the postion the rod is rated for. 1= all postions, 2= flat & horzontial, 3 = flat only

The last number is the rod coating type, with 8 being low hydrogen.

I found the best 7018 was Chemtron. The second best was Hobart but not the quick start 7018 (has a black tip). I never have liked Horbart welding machines or there welding rods. The worst I found was the Lincoln welding rods in 7018.

T_Bone

And I shy away from the independent electrode producers because they have many electrodes that don't conform to any AWS specs. And when pressured all you get are gray answers. If you weld something you want to know what you are getting, what it will do, etc, etc. If it doesn't conform to an AWS welding electrode specification you don't know. I want to sleep well so I buy to AWS spec.