AWS A5.17 / ASME SFA5.17 F7A2-EL8(EL12)
JIS Z3183 S502-H
EN ISO 14174 S A AB 1 / EN ISO 14171 S1
Applications
AWS A5.17 / ASME SFA5.17 F7A4-EL8 Single-layer and multi-layer welding of shipbuildings.
Notes on Usage
Characteristics on Usage
As the penetration is deep, it is suitable for welding of thick plate in both side single-layer welding.
Impact value (or mechanical properties) of weld metal and crack resistibility are excellent.
Also applicable to one-side welding. As the consumption of flux is low, it is economical.
① Dry the flux at 300~350°C (572~662°F ) for 60 minutes before use.
② Pay attention to welding voltage. Excessive welding voltage causes deterioration of joint
properties.
③ Add new flux periodically to prevent the weld defects and bad bead appearance which occurs
when continuously reusing the flux.
④ Weld pass should be limited to 3 or 4 passes. (please inquire of the manufactures when
welding more than 5 passes)
