Tech-Rod 630 description: Tech-Rod 630 is a precipitation hardening steel covered electrode use for welding materials of similar chemical composition such as 17-4 and 17-7. Can be used in the as welded condition or in the heat treated condition to obtain
higher strength. Mechanical properties of the alloy are greatly influenced by the heat treatment. NOTE: Mechanical properties below reflect utilization of post-weld heat treatment between 1875°F and 1925°F for one hour, followed by precipitation hardening
between 1135°F and 1165°F for four hours.