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PHILHARD 73G4

AWSSpecification: NONE

JIS Specification: NONE

Other Specification: DIN 8555 E3-UM-40-PT

I. APPLICATIONS:

On the strength of its toughness, toughness and high-temperature resistance, PHILHARD 73G4 is employed for surfacing on machine components exposed to impact, compression and abrasion at operating temperatures up to 1020ºF(550ºC). Accordingly, PHILHARD 73G4 is particularly suited for building-up dies. It can also be used to good effect for surfacing rollers, drive clover leaves, hot shear blades etc.

PHILHARD 73G4 is also employed for the economic manufacture or these workpieces. As parent metal a carrier steel with tensile strength in excess of 144,000 psi (1,000 N/mm²) is recommended.

II. DESCRIPTION:

Low-hydrogen electrode for high-temperature resistant surfacings exposed to compression and abrasion. The deposit is machinable.

III. NOTES ON USAGE:

Preheat the workpiece to 480 - 570ºF (250 – 300ºC). Guide the electrode as vertically as possible, with medium-long arc. Let the workpiece cool slowly under asbestos. Finish by grinding.

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

C	Si	Mn	Cr	Mo
0.17	0.54	0.62	6.50	3.60

V. HARDNESS OF WELD METAL:

38-42 HRC (310-410 Hv)

High-temperature resistant up to 1020ºF (550ºC)

VI. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP

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

Size	Dia.	3.2	4.0	5.0
(mm)	Length	350	350	350
Current Range		80-130	100-140	130-170

 

 

 

 

•  philarc- philhard 73g4.pdf