AWS A5.17/ASME SFA5.17 F7A(P)8-EH14
JIS Z3183 S502-H
EN ISO 14174 S A FB 1 / EN ISO 14171 S4
Applications
AWS A5.17/ASME SFA5.17 F7A(P)8-EH14 Multi-layer welding of various kinds of structures such as shipbuildings, offshore structures and pressure vessels.
Notes on Usage
Characteristics on Usage
It produces the weld metal which has excellent impact value at low temperature down to -60°C(-76°F) and CTOD at low temperature. As the hydrogen content of weld metal is extremely low, it shows excellent resistance to crack. Tandem, multi-electrode can be performed.AC power source is recommendable because DC makes inferior quality.
① Dry the flux at 300~350°C (572~662°F ) for 60 minutes before use.
② Suitable welding condition for 1st pass in the groove is 500~550A, 26~30V and 30~40Cpm to prevent hot cracking and obtain good slag removal.
③ Preheat at 50~100°C depending on kind of base metal and plate thickness.
