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NEW ESAB OK ARISTOROD 42 LSW SOLID WIRE DESIGNED FOR EASY SLAG REMOVAL
December 10, 2025

NEW ESAB OK ARISTOROD 42 LSW SOLID WIRE DESIGNED FOR EASY SLAG REMOVAL

To improve performance in robotic MIG welding applications, ESAB has launched OK AristoRod 42 LSW, a non-copper coated ER70S-9 solid wire with a chemistry engineered to create minimal slag and silica islands on the weld bead. Available in diameters from 1.0mm and 1.2mm, OK AristoRod 42 LSW will be showcased in 12-in. spools and a Marathon Pac™ bulk wire system. 

OK AristoRod 42 LSW solid wire

“We enhanced the metallurgy of OK AristoRod 42 LSW so that slag self-releases or easily brushes off,” says Kaar Valluvan, Director of Product Marketing at ESAB. “Where most slag islands are silicon oxides, the few slag islands produced by OK AristoRod 42 LSW are manganese and titanium oxides, which makes clean-up easier before the weldment moves to galvanizing or painting.”

ESAB’s new OK AristoRod 42 LSW is a non-copper coated ER70S-9 solid wire engineered to minimize slag and silica islands on the weld bead to reduce cleaning and the total cost of welding.

OK AristoRod 42 LSW provides good wetting action so the weld puddle flows readily to create a smooth transition at the weld toe, a better bead profile and better surface appearance. Spatter generation is minimal. OK AristoRod 42 LSW has a minimum tensile strength 500 MPa and typical impact values of 125 J@-30℃. 

About ESAB 

For more than 120 years, ESAB has been a world leader in fabrication technology. Our distinctive portfolio of fabrication solutions encompasses more than 40 of the world’s most trusted brands for welding and cutting equipment, automation, robotics, fabrication software, filler metals, gas flow control, and PPE. Industries and innovators that shape the world rely on ESAB’s products and solutions. To learn more, visit esab.com.

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