A copper coated, W4Si1/ER70S-6 rod for GTAW of general structural and engineering unalloyed and low
alloyed carbon-manganese steels. It has a slightly higher silicon and manganese content, which increases
the weld metal strength. The high silicon content promotes low sensitivity to surface impurities and
contributes to smooth, sound welds.
CLASSIFICATIONS Wire
EN ISO 636-A W 46 5 4Si1
CLASSIFICATIONS Wire Electrode
EN ISO 636-A W 4Si1
SFA/AWS A5.18 ER70S-6