Union ER 80S-D2 is a TIG rod for welding creep-resistant CrMo steels. It works in power plant, on superheaters, headers and pressure pipework in chromium molybdenum steels.
The rod joins grades such as P235GH, P460M, S460N, S460MC, ASTMA 36, ASTMA 161 and ASTMA 217, along with related materials. It handles pipeline welding including fill passes, and it is used on boilers and pressure vessels under statutory inspection.
- Classification EN ISO: 21952-A, W ZMn4MoSi
- AWS classification: A5.28 / SFA-5.28, ER80S-D2 / ER90S-D2
- Diameters: 1.6 / 2.4 / 3.2 mm
Plan the preheating and the post weld heat treatment to the WPS for the grade in hand, CrMo steels harden in the heat affected zone. Keep the rod inside the gas shield even after you lift it from the pool, a cold oxidised end will contaminate the next drop. Set the gas post-flow long enough for the pool and the electrode to cool under the shield.
