UTP WEARtig Co 21, formerly A Celsit 721 Hardfacing TIG Rod is a cobalt alloy rod that is ideal for hardfacing applications where wear resistance, corrosion resistance, and high temperature resistance are required. It has excellent gliding characteristics, good polishability and toughness, and is highly workhardening. It is also nonmagnetic and machinable with cutting tools.
UTP WEARtig Co 21 Hardfacing TIG Rod is typically used on parts subject to a combination of impact, pressure, abrasion, corrosion, and high temperatures up to 900° C. Some common applications include:
- Running and sealing faces on gas, water, steam, and acid fittings and pumps
- Valve seats and cones for combustion engines
- Working parts in gas and power plants
- Hot working tools with changing thermal load
UTP WEARtig Co 21 Hardfacing TIG Rod has excellent welding properties and produces a homogeneous, finely rippled seam due to spray arc. It also has very easy slag removal. The hardness of the pure weld metal is 30-32 HRC, workhardened to approx. 245 HRC. The hardness at 600° C is approx. 240 HB.