>High Tensile Steel
LC-300HR
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- AWS
- A5.1 E7016 H4R
- KS
- D 7006 E5016
- JIS
- -
- EN
- ISO 2560-A E 42 3 B 1 2 H5
ISO 2560-B E4916 A U H5
Applications | Welding of 50kgf/mm2 class high tensile strength steels ships, bridges, buildings and pressure vessels. |
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Characteristics | LC-300HR is the most widely used extra low hydrogen type covered electrode for all position welding of 50kgf/mm2 class high tensile strength steels. X-ray soundness and mechanical properties of the weld metal are excellent. The usabilities such as arc smoothness, slag removal and bead appearance are good. |
Notes on usage | (1) Dry the electrodes at 300~350℃ for 30~60 minutes before use. (2) Adopt the backstep method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting. (3) Keep the arc as short as possible. |
Shielding Gas | - |