NT® cobalt-based continuous-cast rods
| BRAND NT® | Weld metal standard analysis, % | Hardness at RT | Applications and properties | Diameter as delivered ø, mm | |
| NT® Lite 6 | C Si Cr Ni W Fe |
1,1 1,3 27,0 1,0 4,5 1,0 |
41 HRC 600°C 272 HV |
Corrosion- and wear-resistant Co-based alloy for operation at high temperatures; typical fields of application: engine valves and seats for automotive and naval construction, valves, bushings, seat rings, and spindles for power plant construction, extruder worm conveyors and bushings for the plastics industry, seat and guide surfaces for valves, fittings, and pumps, cutting edges and knives, agitators for the woodworking and paper industries, transport and guide rollers, hot shears, rolls for rolling mills | 3,0 3,2 4,0 5,0 6,0/6,4 8,0 |
| NT® Lite 12 | C Si Cr Ni W Fe |
1,8 1,3 29,0 1,0 8,5 1,0 |
48 HRC 600°C 357 HV |
For cladding of sealing surfaces, discharge valves for Diesel engines, press-forging and deep-drawing tools, hot-trimming dies, grinding and transport equipment; preheating and working temperature: 250 to 400 °C; earth augers, knives, chisels for woodworking and processing of paper and plastics; resistant to organic and inorganic acids (such as hydrochloric acid); resistant to scaling up to 900 °C; post-weld treatment: slow cooling in a furnace or under diatomaceous earth; for more extensive welding work, stress-relief annealing at 500 to 700 °C immediately after exposure to welding heat | 3,0 3,2 4,0 5,0 6,0/6,4 8,0 |
| NT® Lite 1 | C Si Cr Ni W Fe |
2,4 1,1 32,0 1,0 13,0 1,0 |
53 HRC 600°C 445 HV |
Very high-temperature-resistant Co-based alloy with high resistance to abrasive wear and compressive stress, very well suited for cladding of valve-stem ends, wear rings, grinding and edge runners, earth augers and carving tools; heat-resistant up to 1000 °C; preheating and working temperature: 250 to 400 °C; post-weld treatment: slow cooling in a furnace or under diatomaceous earth; for extensive welding work, stress-relief annealing at 500 to 700°C immediately after exposure to welding heat | 3,0 3,2 4,0 5,0 6,0/6,4 8,0 |
| NT® Lite 20 | C Cr Ni W Fe |
2,2 32,0 1,0 16,5 1,0 |
56 HRC | NT® Lite 20: cobalt-based alloy with especially high wear resistance, as well as high corrosion resistance; low shock resistance, but very well suited for certain applications, such as slush pumps, rotating seal rings, or bearing sleeves | 4,0 5,0 6,0/6,4 8,0 |
| NT® Lite 21 | C Si Cr Mo Ni Fe |
0,25 0,5 28,0 5,0 2,8 1,0 |
32 HRC 600°C 201HV |
By virtue of the ductile, corrosion-and high-temperature-resistant weld metal, wide range of application on components subject to impact stress, corrosion, and elevated temperatures; on discharge-valve seats, valves and fittings of all kinds, pumps for handling spent lye and high-temperature liquids, hot-stamping tools, among other uses; preheating and working temperature: 250 to 300 °C, no preheating necessary for small workpieces sufficiently heated by the welding process; | 3,0 3,2 4,0 5,0 6,0/6,4 8,0 |
| NT® Lite 25 | C Cr Ni W |
< 0,1 20,0 10,0 15,0 |
230 HB | 230 HBCo-based alloy of low hardness, high thermal conductivity with no appreciable decrease in hardness in the upper temperature range; possible application: continuous-casting rolls and guides | |
| NT® Lite F | C Si Cr Ni W Fe |
1,6 1,2 26,5 23,0 12,5 1,0 |
45 HRC 600°C 304 HV |
High abrasion and corrosion resistance, similar to NT® Lite 6, but with greater hardness and better flow behaviour | 3,0 3,2 4,0 5,0 6,0/6,4 8,0 |
| NT® Alloy T-400 | C Si Cr Ni Fe |
0,08 2,4 8,5 1,5 1,5 |
NT® Alloy T-400: intermetallic cobalt-based alloy with especially high resistance to seizing wear and corrosion; low coefficient of friction; therefore employed especially in cases where good dry-running properties are required | 5,0 | |
Rod surface: continuous-cast, bare surface in the standard version; polished version available on request
Further continuous-cast quality grades and lengths available on request.