DURA OKs 448 FD

Standards DIN8555 MF 21-GF-65-GZ

Characteristics DURA OKs 448 FD is a tubular wire containing fused tungsten carbides for extreme wear resistant hardfacings. The weld metal is composed of fused tungsten carbides which are embedded in a hard matrix alloy.
DURA OKs 448 FD is easy to use and has little spatter and smoke. It should be welded in max. 2 layers using lowest possible Amp and Volts.

Typical applications

Hardfacing equipment parts which are subject to strong abrasive wear with little impact. On parts such as mixer blades, moulding sand preparation plants, augers, scrapers etc.


Recommendations for
best welding results
Thoroughly clean the welding zone. It should be exempt from
grease, scale, corrosion, and similar contamination.
Preheat the work piece to 300 – 500°C. During the welding process the local base material temperature has to be increased to 650°C however, overheating should be avoided.

Hardnes
(typical values)
Fused tungsten carbide HV 0.4
ca. 2000 - 2400

1.layer HRc
ca. 62 - 64

2.layer HRc
ca. 64 - 68

Weld metal analysis (typical, wt. %)

Current

Equivalent

Fe-Matrix
40

=+

DURA OKs 448 Fe

 

WSC
60


  Dia. mm
1.6
2.4
2.8

DIA (inch)
1/16
3/32
7/64

Amps
180 – 220
220 – 260
240 – 280
Delivery
C 300 Dorn ca. 15,00
K 435 Haspel ca. 15,00
K 435 Haspel ca. 15,00


Statements on composition and application are just for the applier.s information. Statements on mechanical properties always refer to the all-weld-metal according to valid standards. DURAWELD may change the characteristics of its products without notice. We recommend the applier to check our products for their special application autonomously.