WEARcore 744 N-O is a self-shielded cored wire developed to lay, in a single layer, a ferritic martensitic steel with 12 to 13 % Cr, 2 to 3 % Ni and 0.5 to 1 % Mo, made to resist metal to metal wear, corrosion and thermal fatigue cracking.
It needs no shielding gas, which makes work outdoors and in wind simpler, the pool is shielded by the decomposition of the core ingredients, and the wire goes into maintenance work, rebuilding dimensions and strengthening surfaces exposed to wear.
- Classification EN ISO: 14700 T Fe7
- AWS classification: 8555 MF 5-GF-50-C
- Shielding: self-shielded, no shielding gas
- Diameters: 2.4 mm
- Hardness of deposit: 49 HRC
On hard deposits expect a network of shrinkage cracks, on working overlays that is normal, but it must not reach the parent material. Keep the stick-out recommended for self-shielded wires, too short a one spoils the pool shielding and causes porosity. Work with fume extraction, self-shielded wires smoke far more than gas shielded ones. Previously sold as SK 744N-O.