MIG/TIG ARC WELDING FOR STAINLESS STEELS & CARBON STEELS
ST-308 AWS A5.9 / ASME SFA5.9 ER308
JIS Z3321 Y308
TIG welding of 18%-8%Ni stainless steel.
Applications
KR, ABS, DNV
Approval
ST-308 is a filler rod for TIG welding with pure Ar gas.
As the weld metal contains ferrite, its crack resistibility is excellent.
Both its bead appearance and weldability are good.
Furthermore, resistance to corrosion and mechanical properties is good.
Characteristics on Usage
Typical Chemical composition of All-Weld Metal (%)
C Si Mn Ni Cr
0.05 0.38 1.75 10.1 19.8
Typical Mechanical Properties of All-Weld Metal
Y.S EL. CVN-Impact Value
N/mm2 (lbs/in2) (%) J (ft.lbs) 0°C (32°F)
610 (88,500) 40 130 (95)
Typical Welding Conditions (DC-)
Size
A V
Gas Flow
Remarks
mm (in) ( /min.)
1.2 (.045) 250 26 25 ShieldingGas
1.6 (1/16) 300 29 25 Ar
