Processes: MAG and submerged arc
| Standard designation | Standard analysis of the pure weld metal % | Hardness of the weld surfacing | Application and properties | |
| NT® - Lite 21 - FD DIN 8555: MF 20-GF-350-CTZ |
C Cr Ni Co Mo Fe |
0,25 27,0 3,0 Remainder 6,0 < 5,0 |
35 HRC 25 HRC at 600°C |
Wide range of application for the alloy because of the ductile, corrosion-resistant, and high-temperature-resistant weld metal; for use wherever exposure to high impact, corrosion, and elevated temperature occurs, for instance, on discharge valve seats, valves and fittings of all kinds, scavenge pumps, high-temperature-liquid pumps, hot-stamping tools; preheating and operating temperature: 250-300 °C; no preheating necessary for small workpieces which are sufficiently heated by welding |
| NT® - Lite 6 - FD DIN 8555: MF 20-GF-40-CTZ |
C Cr W Co Fe |
1,0 28,0 4,0 Remainder < 5,0 |
42-44 HRC 35 HRC at 600°C |
For weld surfacing on sealing surfaces for valves and fittings exposed to acids, discharge valves for Diesel engines, bushings and shafts in hot oil pumps, bearings with water lubrication, high-temperature-liquid pumps, hot-stamping tools |
| NT® - Lite 12 - FD DIN 8555: MF 20-GF-50-CTZ |
C Cr W Co Fe |
1,5 29,0 8,0 Remainder < 5,0 |
45-47 HRC 40 HRC at 600°C |
For weld surfacing on sealing surfaces, discharge valves for Diesel engines, hot-stamping tools and drawing dies, hot-trimming tools, grinding and transport equipment; preheating and operating temperature: 250-400 °C; earth augers, knives, chisels for wood-working, paper and plastics processing; resistant to organic and inorganic acids (such as hydrochloric acid); resistant to scaling up to 900 °C; post-weld treatment: slow cooling in furnace or under kieselguhr; for larger workpieces: stress-compensating annealing at 500-700 °C immediately after welding |
| NT® - Lite 1 - FD DIN 8555: MF 20-GF-60-CTZ |
C Cr W Co Fe |
2,5 30,0 12,0 Remainder < 5,0 |
50-55 HRC 43-46 HRC at 600°C |
For weld surfacing on valve shaft ends, lock rings, grinding and edge mills, earth augers and kirving tools; for resistance to metal-to-metal sliding friction; pump bushings, guide rails; corrosion-resistant, especially toward reducing acids, such as hydrochloric and sulphuric acid at room temperature; resistant to scaling up to 1000 °C; preheating and operating temperature: 250-400 °C; post-weld treatment: slow cooling in furnace or under kieselguhr; for large workpieces: stress-compensating annealing at 500-700 °C immediately after welding |
| NT® - Alloy C - FD DIN 8555: MF 23-GF-250-CKT |
C Cr Mo Ni W Fe |
0,1 17,0 17,5 Remainder 4,5 5,5 |
HB 270 HB 380 strainhardened |
Flux-cored wire electrode NT®-Alloy C-FD: best suited for weld surfacing on hot-work tools subject to impact and jarring; corrosion-resistant in oxidising and reducing media; for the production of new cut edges and wear-surfaces on tools for cutting and shaping of steels and metals, such as ingot shear blades, slab shear blades, bloom shear blades, hot-trim blades, hollow-forging rods, forging dies, hammer saddles, bottom dies, repair of injection moulds |
Forms available on delivery: flux-cored wire (MAG) with dimensions from 1.2 to 2.4 mm – coil forms as specified in EN 759; flux-cored wire (UP) with dimensions from 3.2 to 4.0 mm in coils as specified in EN 759; further dimensions available on request.