OK 12.64


EN ISO 636-A W 46 3 W4Si1 (varratfém)
EN ISO 636-A W4Si1
SFA/AWS A5.18 ER70S-6

Copper-plated welding rod W4Si1 / ER70S-6 for arc welding of non-alloyed and low-alloy structural steels for general purpose protective gas tungsten electrodes. Normally argon is used as a protective gas.


Compared to the OK Tigrod 12.61, the higher Tigrod 12.64 silicon and manganese content increases the strength values. Higher silicon also reduces the sensitivity to surface impurities and helps to create an attractive suture surface