>Heat Resistance Steel
CM-78
CM-78 is an iron powder low hydrogen type electrode for all-position welding, which providesthe weld metal of 0.5%Mo.
- AWS
- A5.5 E7018-A1
- KS
- D 7022 DT1216
- JIS
- Z 3223 E4918-1M3
- EN
- ISO 3580-A E Mo B 3 2
ISO 3580-B E4918-1M3
Applications | Welding of 0.5%Mo steel used for high temperature and high pressure boiler, pressure piping and tubing and other pressure vessel, chemical and oil refining industries. |
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Characteristics | CM-78 is an iron powder low hydrogen type electrode for all-position welding, which provides the weld metal of 0.5%Mo. |
Notes on usage | (1) Dry the electrodes at 325~375℃ for about one hour before use. (2) Preheat at 100~200℃ and postheat at 620~680℃. (3) Adopt back step method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting. (4) Keep the arc as short as possible. |
Shielding Gas | - |