Copyright (c) 2012, PT. Union Tetap Jaya. All rights reserved
Shielded metal arc welding of mild and
490N/mm² high tensile steels in ships, bridges,
buildings and pressure vessels.
Characteristics on usage
LB-52 is the most widely used low hydrogen type covered electrode for all-position welding of
490N/mm² high tensile steel.
X-ray soundness and mechanical properties of the weld metal are excellent.
The usability such as arc smoothness, slag removal and bead appearance are good.
Notes on usage
Dry the electrodes at 300-350°C for 30-60 minutes before use.
Take the back step method or strike the arc on a small steel plate prepared for this particular
purpose to prevent blowholes at the arc starting.
Keep the arc as short as possible.