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Strip-powder combinations for buffer passes

NT® Strip-powder combinations for buffer passes

Brand NT® Strip alloy type
AWS		 Material
no.		 Powder
Standard analysis Application and Properties
C Si Mn
S 1 - BS EL12 1.0320 NT® Flux 4 Strip

Subsequent passes		  0,1

0,05		 0,1

0,4		 0,4

0,2		 Low-carbon buffer passes on higher- carbon or crack-prone base metals; restoration of worn, low-alloy machine components

Flux-cored wire electrodes: copper and copper alloys

Flux-cored wire electrodes: copper and copper alloys

Tin bronze

BRAND NT® Letter Symbol
DIN		 DIN Material no. AWS / BS Classification Standard analysis
of welding wire %		 Melting range
°C
CuAg-W S-CuAg 1733 T.1 2.1211 A 5.7-77 ERCu Cu + Ag min. 99,5
Ag 1,0; P <0,02		 1070 to 1080
CuAg-G S-CuAg 1733 T.1 2.1211 A 5.27-78 ERCu Cu + Ag min. 99,5
Ag 1,0; P004		 1070 to 1080
CuMn S-CuSn 1733 T.1 2.1006 A 5.7-77 ERCu Cu min. 98; Sn 0,8;
Mn 0,3; Si 0,2		 1020 to 1050
CuSi S-CuSi 3 1733 T.1 2.1461 A 5.7-77 ERCuSi-A Cu min. 95; Si 3;
Mn 1		 910 to 1025
SF-Cu (L-SFCu)
(SF-Cu)		 8513.1
1787		 2.0081
2.0090		 BS 1845 (Cu 6) Cu min. 99,9
P0,04-0,07		 1080
E Cu L-Cu
Sd-E-Cu		 8513
8566		 2.0080
2.0060		 - - Cu min. 99,9
sauerstoffhaltig		 1070 to 1080
SnBz 5 - - - BS 2901.3 C10 Cu min. 93,8
Sn 5; P 0,2		 930 to 1060
SnBz 6 S-CuSn 6
L-CuSn 6
Sd-CuSn 6
LSd-CuSn6		 1733 T.1
8513 T.1
8566 T.1
8566 T.2		 2.1022
2.1021
2.1022
2.1020		 A 5.7-77
A 5.7-76		 ERCuSn-A
ECuSn-A		 Cu min. 93
Sn 6,4
P 0,2		 910 to 1040
SnBz 10 S-CuSn 6
L-CuSn 6
Sd-CuSn 6		 1733 T.1
8513 T.1
8566 T.1		 2.1022
2.1021
2.1022		 A 5.6-76 ECuSn-C Cu min. 91
Sn 8
P 0,1		 910 to 1040
SnBz 12 S-CuSn 12
L-CuSn 12
Sd-CuSn 12
LSd-CuSn 14		 1733 T.1
8513 T.1
8566 T.1
8566 T.1		 2.1065
2.1055
2.1056
2.1056		 - - Cu min. 86
Sn 12,5
P 0,25		 825 to 990

Aluminium bronze

BRAND NT® Letter Symbol
DIN		 DIN Material no. AWS / BS Classification Standard analysis
of welding wire %		 Melting range
°C
AlBz 7 - - - BS 2901.3 C 12 Cu min. 91; Al 7;
Fe+Mn+Ni min.1,4		 1040 to 1050
AlBz 8 S-CuAI 8
Sd-CuAI 8
LSd-CuAI 8		 1733 T.1
8566 T.1
8566 T.2		 2.0921
2.0921
2.0920		 A 5.7-77 ERCuAI-Al Cu min. 92
Al 8		 1030 to 1040
AlBz 10 - - - - - CU Remainder ; Al 9,2;
Fe 0,3; Mn 0,1		 1020 to 1040
AlBz 8 Fe CuAl8Fe 17665 2.0932 A 5.6-76 ECuAI-A2 Cu min. 90,5
Al 8; Fe 1,5		 1030 to 1040
AlBz 8 FeNi CuAl8Fe 17665 2.0932 - - Cu min. 90
Al 8; Fe 1,5; Ni 0,3		 1030 to 1040
AlBz 8 MNF S-CuAl 8 Ni 2 1733 T.1 2.0922 - - CU Remainder ; Al 8
Fe 2; Mn 2; Ni 2		 1030 to 1050
AlBz 9 Fe SG-CuAI 10 Fe 1733 2.0937 A 5.7-77 ERCuAI-A2 Cu min. 89; Al 9;
Fe 1,5		 1030 to 1040
AlBz 8 Ni S-CuAI 8 Ni 2 1733 2.0922 - - CU Remainder ; Al 8,5
Fe 1,6; Ni 2; Mn 1,7		 1030 to 1050
AlBz 9 Ni S-CuAI 8 Ni 2 1733 T.1 2.0922 - - CU Remainder ; Al 8,5
Fe 1,6; Ni 2; Mn 1,7		 1030 to 1050
CuMnAl S-CuMn 13 Al 1733 2.1367 - - CU Remainder ; Al 6,5;
Mn 12; Fe 1,5; Ni 1,5		 950 to 990
CuMnAl 300 S-CuMn 13 Al 1733 T.1 2.1367 A 5.7-77 ERCuMnNiAl CU Remainder ; Mn 13;
Al 7; Fe 2,5; Ni 2		 945 to 985

Copper-nickel

BRAND NT® Letter Symbol
DIN		 DIN Material no. AWS / BS Classification Standard analysis
of welding wire %		 Melting range
°C
CuNi 10 Fe S-CuNi 10 Fe 1733 2.0873 BS 2901.3 C 16 CU Remainder ;
Ni 10; Fe 0,7;
Mn 0,5; Ti 0,3		 1100 to 1145
CuNi 30 Fe S-CuNi 30 Fe 1733 2.0837 AWS/
A 5.7-77
BS 2901.3		 ERCuNi

C 18		 CU Remainder
Ni 30; Fe 0,5
Mn 0,5; Ti 0,3		 1180 to 1240

Brass

BRAND NT® Letter Symbol
DIN		 DIN Material no. AWS / BS Classification Standard analysis
of welding wire %		 Melting range
°C
Hartlot 1



Hartlot 1 F		 S-CuZn 40 Si
S-CuZn 39 Sn
L-CuZn 40

L-CuZn 39 Sn		 1733 T.1
1733 T.1
8513 T.1

8513 T.1		 2.0366
2.0532
2.0367

2.0533		 A 5.8-77 RBCuZn-A Cu min. 59
Si 0,2
Zn Rest
+ Sn 0,4
+ Mn 0,6		 870 to 900
CuZn S-CuZn 39 Ag
L-CuZn 39 Sn		 1733 T.1
8513 T.1		 2.0535
2.0533		 - - Cu min. 59
Ag 1
SiO,1
Zn Rest		 870 to 890
F L-CuSn 39 Sn 8513 T.1 2.0533 A 5.8-77 RBCuZn-A Cu min. 59; Si 0,2;
Sn 0,4; Mn 0,6; Zn Rest		 870 to 890

Nickel silver

BRAND NT® Letter Symbol
DIN		 DIN Material no. AWS / BS Classification Standard analysis
of welding wire %		 Melting range
°C
Hartlot 2
Hartlot 2 F		 L-CuNi 10 Zn 42 8513 T.1 2.0711 A 5.8-77 RBCuZn-D Cu 50
Ni 8,5
SiO,2
Zn Rest		 890 to 920

Forms available on delivery: MIG wire electrodes with dimensions 0.8; 1.0; 1.2; 1.6; 2.4 mm – coil form as specified in EN 759; TIG and gas-welding rods with dimensions 0.8 to 4 mm; length 1000 mm; spraying wires also available with diameters in inches.

Further wire grades and dimensions available on request.

 

{mospagebreak title=Suitability for various processes}

Suitability for various processes

 

BRAND NT® Process Applications and properties
Oxyacetylene welding TIG MIG Open
arc welding 		Spraying wires
CuAg-W - ++ ++ - - Silver-alloyed Cu welding wire – especially low P content for inert-gas welding – weld metal with low viscosity and free of pores - high electrical and thermal conductivity
CuAg-G ++ - - + - Silver-alloyed Cu wire (rod) - with somewhat higher P content, well suited for oxyacetylene welding; weld metal well suited for machining and for shaping
CuMn + ++ ++ + - Tin-alloyed Cu welding filler with good flow properties - for welded joints subject to severe loads, on Cu materials – excellent machining properties – pore-free welds – recommended especially for TIG and MIG welding
CuSi - ++ ++ + - For TIG and MIG-welding on low-alloy CuMn and CuSiMn materials, also well suited for very good wear-resistant weld surfacing on steel; high temperature stability and corrosion resistance; hardness: about 80 HB
SF-Cu ++ + - - - Special copper wire for coated electrodes, well suited for arc welding of copper, joining of copper with steel, grey cast iron, and Ni alloys with wall thickness at least 3 mm; especially well suited also for large workpieces
E Cu ++ - - ++ ++ Pure electrolytic copper welding wire with high conductivity in conformance with DIN 1789 - not recommended for MIG/TIG
SnBz 5 + ++ ++ ++ ++ Similar to SnBz 6, but with a lower Sn content, in conformance with the British standard, suitable for requirements which are slightly less stringent; deoxidising action identical to that of SnBz 6, however; hardness: 80-90 HB
SnBz 6 + ++ ++ ++ ++ SnBz 6 tin bronze with at least 6 % Sn for all welding jobs - controlled P content - good deoxidising action – weld surfacing and welded joints on CuSn alloys – also preferred for furnace brazing - (different P contents available on request); hardness: 80-90 HB
SnBz 10 + ++ ++ ++ ++ Special CuSn quality with higher alloying content – higher hardness values for weld surfacing - for repairs on bearings - for welded joints on galvanised sheet metal; hardness: 80-100 HB
SnBz 12 + ++ ++ ++ ++ High-alloy CuSn welding wire, suitable for all welding processes – very hard weld metal similar to cast bronze, and thus well suited for especially wear-resistant claddings, as well as for welded joints and repair work on bronze; hardness: 80-100 HB
AlBz 7 - ++ ++ ++ ++ Similar to AlBz 8, but with lower Al content in conformance with the British standard, otherwise suited for the same applications as AlBz 8; hardness: about 100 HB
AlBz 8 - ++ ++ ++ ++ AlBz 8 for welding of joints on CuAl materials – weld surfacing on steel – very high resistance to corrosion and wear; hardness: about 100 HB
AlBz 10 - ++ ++ ++ ++ AlBz 10 with Al content > 9 %, greater hardness of the weld metal as well as superior wear and corrosion properties, in comparison to AlBz 8, also suited for use as electrode core wire
AlBz 8 Fe - ++ ++ ++ ++ Fe-alloyed Cu-Al welding filler - for welding of joints – weld surfacing on steel with higher wear resistance - for postweld finishing by cutting processes; spraying wire; hardness: about 140 HB
AlBz 8 FeNi - ++ ++ ++ ++ Further development of AlBz 8 Fe; as a result of Ni addition, practically no cracking in multiple-pass weld surfacing on steel; otherwise suited for the same applications as AlBz 8 Fe
AlBz 8 MNF - ++ ++ ++ ++ Multiple-material CuAl welding filler - for CuAl materials – weld surfacing on steel – higher resistance to wear and abrasion – very high corrosion resistance, also in sea water; hardness: about 140 HB
AlBz 9 Fe - ++ ++ ++ ++ Similar to AlBz 8 Fe, standard AlBz alloy, as specified in AWS, higher wear resistance; also suited for use as spraying wire!
AlBz 8 Ni - ++ ++ ++ ++ Similar to AlBz 8 MNF and AlBz 9 Ni, with varying contents of the additional elements Fe, Mn, Ni; applications similar to those of AlBz 8 MNF and AlBz 9 Ni: hardness: about 150 HB
AlBz 9 Ni - ++ ++ ++ ++ Similar to AlBz 8 MNF - with higher Al content – high purity (Zn < 0.07 %); hardness: about 150 HB
CuMnAl - ++ ++ ++ + Similar to CuMnAl 300, but with lower (< 7 %) Al content in conformance with DIN 1733, thus, hardness somewhat lower on weld metal, but with equal corrosion resistance and suited for the same applications; hardness: about 180 HB
CuMnAl 300 - ++ ++ ++ + Welding of joints – sea-water-resistant Cu-Al alloy with high strength and hardness values – wear-resistant claddings on Cu alloys, unalloyed and low-alloy steel, as well as grey cast iron; hardness: 200-220 HB
CuNi 10 Fe + ++ ++ ++ + For welding on Cu-Ni materials as specified in DIN 17664, and on sea-water-resistant CuZn alloys as specified in DIN 17660 table 3, claddings on unalloyed and low-alloy steels as well as cast iron
CuNi 30 Fe - ++ ++ ++ + Similar to CuNi 10 Fe, but with higher corrosion resistance in salt solutions, brines, and sea water, hence, recommended especially for plant construction
Brazing filler 1


Brazing filler 1 F		 + - - - Brazing:
++		 Ms brazing fillers: S – fume-free Ms brazing filler; T - brazing fillers containing Sn for brazing of Cu, Ni, and their alloys, as well as iron and steel; MT - with Mn as additional alloying partner, easy flow; brazing filler 1 F with flux coating
CuZn ++ - - - ++ 1 % Ag, - good flow properties for finer work – for brazed joints with higher strength – gap brazing
F ++ - - - ++ Round, flux-cored filler rod for brazing without additional flux – easy working – reliable brazing without wetting defects
Brazing filler 2
Brazing filler 2 F		 ++ - - - ++ Brazing filler 2: Nickel silver brazing filler with higher ductility than the Ms brazing fillers – easy flow - high strength values - for joints on steel, cast iron, and Ni alloys – also available as brazing filler 2 Ag with the addition of 1% Ag, characterised by especially easy flow, excellent wetting, and moderation of the working temperature; brazing filler 2 F: similar to brazing filler 2, but in flux-coated filler-rod form

Legend: ++ recommended + suitable – not suitable

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.

Flux-cored wire electrodes chemical resistant: MAG joint welding

Process: MAG joint welding

Standard designation Standard analysis of the pure weld metal % Application and properties
NT® - Alloy 308 L - FD

DIN 8556: 19 9 L
Material No.: 1.4316
AWS: E 308 LTO-4
EN 12073: T 199 L R M 3		 C
Si
Mn
Cr
Ni		 < 0,04
0,6
1,6
20,0
10,0		 Austenitic CrNi flux-cored wire in ELC-quality with rutile-acidic slag characteristic; well suited for MAG welding on unstabilised and stabilised corrosion-resistant 19/9-CrNi steels; weld-decay-proof at operating temperatures up to 350 °C; resistant to scale formation up to about 800 °C; NT® alloy 308 L-FD characterised by extremely convenient, nearly spatter-free welding behaviour: base metals: steels with material no. 1.4301, 1.4306, 1.4311, perhaps also material no. 1.4541, 1.4343, 1,4550
NT® - Alloy 316 L - FD

DIN 8556: 19 12 3 L
Material No.: 1.4430
AWS: E 316 LTO-4
EN 12073: T 19 12 3 L R M 3		 C
Si
Mn
Cr
Ni
Mo		 < 0,04
0,6
1,6
19,5
12,5
2,6		 Austenitic CrNiMo flux-cored wire in ELC quality with rutile-acidic slag characteristic; NT® alloy 316 L-FD well suited for MAG welding of unstabilised and stabilised-corrosion resistant 19/12/3 CrNiMo steels; weld-decay-proof at operating temperatures up to 350 °C; resistant to scale formation up to about 800 °C; base metals: steels with material no. 1.4401, 1.4404, 1.4406, 1,4435, 1.4436, perhaps also material no. 1.4571, 1.4580, 1.4583

Forms available on delivery: wire diameter: 0.9 – 1.2 – 1.6 mm, coils as specified in EN 759, further high-alloy flux-cored wire grades available on request.

Flux-cored wire electrodes: “open arc” and submerged arc

Flux-cored wire electrodes: “open arc” and submerged arc

Processes: “open arc” and submerged arc

Standard designation Standard analysis of the pure weld
metal, %		 Hardness of
the surfacing		 Application and properties
EA 150 - FD
DIN 8555:
MF 1 -GF-200		 C
Si
Mn		 0,06
0,6
0,9		 150-200 HB Flux-cored wire electrodes for weld surfacing on rollers and shafts, as well as on components intended for subsequent machining; for welding of shrink holes in steel castings
EA 250 - FD
DIN 8555:
MF 1 -GF-300		 C
Si
Mn
Cr
Mo		 0,1
0,65
1,0
1,5
0,35		 280-320 HB Flux-cored wire electrodes for weld surfacing on rails, shunt points, couplings, clover-leaf crossings, shafts, etc.; for build-up welding of profiles on weldable C steels; as moderating layer before hard surfacing; weld metal machinable with high-speed cutting and hard-metal tools
EA 350 - FD
DIN 8555:
MF 1 -GF-350		 C
Si
Mn
Cr
Mo		 0,14
0,75
1,5
2,5
0,3		 330-370 HB Flux-cored wire electrodes for weld surfacing on excavator components, chain links, guide ways, rotor discs, crane wheels, stators, wheel flanges, brake drums, forging dies, etc.; machining of weld metal still possible with carbide-tipped tools
EA 500 - FD
DIN 8555:
MF 1 -GF-450		 C
Si
Mn
Cr
Mo		 0,2
0,75
1,5
2,5
0,3		 400-500 HB Flux-cored wire electrodes for weld surfacing on rotor discs, shafts, excavator crawlers, rope pulleys, transmission gear components, etc.; machining of weld metal possible only by grinding
EA 600 - FD
DIN 8555:
MF 6-GF-55		 C
Si
Mn
Cr
Mo		 0,45
0,9
1,6
6,0
1,5		 53-55 HRC Flux-cored wire electrodes for ductile and wear-resistant claddings, insensitive toward impact stresses, and thus well suited for digging teeth and excavator blades, swage hammers, guide rails, roll-type crushers, edge mills, gravel pumps, worm conveyors, etc.; machining of weld metal possible only by grinding
EA 600 L - FD
DIN 8555:
MF 1 -GF-450		 C
Si
Mn
Cr
Mo		 0,3
0,9
1,6
6,0
1,5		 40-45 HRC Same purpose and applications as for EA 600 - FD, but with lower hardness value
EA 600 TiC - FD
DIN 8555:
MF 6-GF 55		 C
Si
Mn
Cr
Ti
Mo		 1,7
0,3
1,3
6,5
5,0
1,3		 54-56 HRC Flux-cored wire electrodes for highly wear-resistant weld surfacing on components subject to impact, such as pick hammers, digging teeth, excavator blades, roll-type crushers, gravel pumps, worm conveyors, and other wear parts on crushers and hauling gear
240 - FD
DIN 8555:
MF 10-GF-50		 C
Si
Mn
Cr		 2,8
1,7
1,7
15,0		 35-50 HRC Flux-cored wire electrodes for ductile, abrasion-resistant claddings which are subject to severe abrasive wear, but with only moderate exposure to impact; for excavator blades and digging teeth, suction-dredger components, crawler-type excavators, belt conveyors, worm conveyors, mixer paddles, agitator blades, and similar components
255 - FD
DIN 8555:
MF 10-GF-60-RTZ		 C
Si
Mn
Cr		 4,7
0,8
0,75
27,0		 52-59 HRC Flux-cored wire electrodes for abrasion-resistant weld-surfacing on components which are subject to severe abrasive wear, such as that caused by sand, gravel, coal, ores, slag, etc.; for worm conveyors, agitator blades, mixer paddles, pump components, and similar components; rust-resistant weld metal; weld surfacing in 2 or 3 passes to a thickness up to 6 mm
A 43 - FD
DIN 8555:
MF10-GF-60-RT		 C
Si
Mn
Cr
Nb		 5,0
0,5
0,7
22,0
7,0		 56-62 HRC Flux-cored wire electrodes for weld surfacing with the highest possible resistance to frictional and abrasive wear; for mixer components, ash conveyors, slag crushers, suction dredgers, centrifuge and guide elements on scale-removal equipment, digging teeth, excavator crawlers, etc.; cladding thickness: up to 6 mm in 2 passes
A 45 - FD
DIN 8555:
MF 10-GF-65-RT		 C
Si
Mn
Cr
Mo
Nb
W
V		 5,5
0,7
0,8
22,0
5,0
7,0
2,0
1,0		 bei RT:
58-62 HRC

bei 550°C:
370-400 HB

bei 600°C
350-380 HB		 Flux-cored wire electrodes for weld surfacing with extremely high resistance to frictional and abrasive wear at temperatures up to 600 °C; for cladding of crushers and grates in sintering plants, for cone stoppers on blast furnaces, for ore-dressing plants, for the cement industry, etc.
EA manganese - FD
DIN 8555:
MF 7-GF-200-KN
 C
Si
Mn
Cr
Ni		 0,95
0,4
14,0
3,5
0,5		 200 HB

n. Kaltver-
festigung
450 HB		 Flux-cored wire electrodes for weld surfacing on austenitic manganese steels subject to impact wear; strain hardening of the weld metal up to 450 HB; for claddings subject to rolling or impact stress, as in the case of roller tables, beating arms, rails, hammers, crossing tongues, and similar items; for welding of joints on austenitic manganese steel; welding to be performed in the cold condition
219 - FD
DIN 8555:
MF 7-GF-200-KN		 C
Si
Mn
Cr		 1,0
0,35
20,0
5,0		 200 HB

after strain
hardening
450 HB		 Flux-cored wire electrodes for weld surfacing on austenitic manganese steels with extremely low susceptibility to cracking; also for cladding of carbon steels which are difficult to weld; highly ductile weld metal; for weld surfacing on rails, paving breakers, crushers, etc.; strain hardening of the weld metal when subjected to stress
AP - FD
DIN 8555:
MF 7-GF-250-KN		 C
Si
Mn
Cr		 0,5
0,3
16,5
12,0		 200-250 HB

after strain
hardening
450 HB		 Flux-cored wire electrodes for weld surfacing on intermediate passes before hard surfacing with other wires; for welding of joints on austenitic manganese steel; non-magnetic; for weld surfacing on tramway rails and switch points; for intermediate passes on carbon steels and austenitic manganese steels, on rotary kiln rings, blast-furnace cones, digging teeth, pick hammers, grinding machines
4370 - FD
DIN 8555:
MF 8-GF-200-KNTZ		 C
Si
Mn
Cr
Ni		 0,08
0,7
6,5
18,5
8,2		 after strain
hardening
400 HB		 Flux-cored wire electrodes with austenitic weld metal for welding of joints on steels which are difficult to weld, on austenitic manganese steels, for mixed joints; for weld surfacing and moderating layers; rust-proof weld metal; well suited for scale-resistant welds; strain hardening of the weld metal to 400 HB; highly ductile weld metal; mechanical property values:
yield strength ≥ 340 N/mm2; tensile strength ≥ 600 N/mm2; expansion (L0 = 5 d0) 35%;
notch impact energy (DVM specimen) 95 J
624 - FD
Special alloy		 C
Mn
Cr
Nb		 1,0
15,0
8,0
3,0		 250 HB

after strain
hardening
35-45 HRC		 These flux-cored wire electrodes are especially well suited for weld surfacing of sealing seats on blast-furnace cones. The electrodes are of the austenitic type, in which the excess carbon combines with niobium and forms hard, uniformly distributed niobium carbides. Consequently, this alloy type exhibits extremely high resistance to wear. Alloy 624 is characterised by an austenitic structure which does not undergo any metallurgical alterations during welding; hence, crack resistance is ensured over a wide range of thermal conditions, such as preheating and intermediate pass temperatures from 0 to 300 °C without difficulty. The workpiece can return to room temperature without problem before stress-relief annealing.
GS - FD
Special alloy		 C
Si
Mn		 2,2
3,8
0,3		 35-45 HRC Upon slow cooling, the composition of the flux-cored wire electrode yields weld metal similar to grey cast iron, with a lamellar graphite structure. For avoiding cracks in the weld metal, the workpiece should be preheated to about 450 °C, and the temperature should be maintained constant during welding. The workpiece should subsequently be cooled as slowly as possible. For repair welding on ingot moulds, heat treatment is not necessary. This alloy is well suited for repair of GGL, of defects, ingot moulds, etc.

Forms available on delivery: flux-cored wire (OPEN ARC) with dimensions 1.6; 2.0; 2.4; 2.8 mm – coil form as specified in EN 759; flux-cored wire (UP process) with dimensions 3.2 and 4.0 mm, in coils as specified in EN 759; further flux-cored wire qualities and wire dimensions available on request.