Haynes Hastelloy C-4 description: HASTELLOY C-4 RTW filler metal is used for the gas metal arc and gas tungsten arc welding of
C-4 alloy. The deposited weld metal has outstanding high temperature stability in the 1200F to 1900F range. The weld metal has excellent resistance to stress corrosion cracking and oxidizing atmospheres up to 1900F. It also resists a wide variety of chemical process environments. The RTW finish on the spooled wire promotes smooth feeding through welding equipment and reduced tip wear in contact tips.