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Flux-cored wire electrodes: MAG and submerged arc

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.