SAF Steelcored 21 HD description: STEELCORED 21HD is a seamless copper coated rutile flux cored wire and the enhanced degree of fill results in a higher current carrying capacity and deposition rate. Thus, welding speed may be increased which leads to a saving of time and costs. It can be welded in all positions using only one parameter setting (24 volts, wire feed 9 m/min, wire dia. 1,2 mm). STEELCORED 21 HD is also used for fully mechanized welding. The weld metal produced features excellent mechanical-technological properties and a hydrogen content of < 5 ml/100g deposited weld metal. Low spatter loss, easy slag removal producing finely rippled, pore-free welds without undercut into the base metal.