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NHF-600B (rutile type)
NHF-600B (rutile type)
AWS Specification: NONE
JIS Specification:

DFA-600-R

Other Specification:

DIN E2-60

 

 

I. APPLICATIONS:

Hard surfacing of bulldozer links, bucket edges and dipper teeth, etc.

 II. DESCRIPTION:

NHF-600B is an electrode having weld metal of martensite structure.  It is very suitable for soil abrasion.  Machining is impossible as-welded condition.

 III. NOTES ON USAGE:

  • Preheat at 150ºC and over in general.

  • It is recommended to underlay with low hydrogen type electrode (N-7016 or N-7018) in case the base plate is hardenable or multi-layer welding is required.

  • Dry the electrodes at 300~350ºC for 30~60 minutes before use. 

IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):

 

C

Si

Mn

Cr

Mo

0.65

0.52

0.43

8.78

5.03

V. HARDNESS OF WELD METAL: 54 – 58 HRC (580 – 680 Hv)

VI. SIZES AVAILABLE AND RECOMMENDED CURRENTS (AC or DC + ):

 

Size (dia. mm)

3.2

4.0

5.0

Length (mm)

350

350

350

Current Range (Amp)

80-110

100

150-200

VII. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP, HORIZONTAL, OVERHEAD