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PHILHARD 73G3

AWSSpecification: NONE

JIS Specification: NONE

Other Specification: DIN 8555 E3-UM-45-T

 

I. APPLICATIONS:

On account of its high tensile strength, toughness and high-temperature resistance, PHILHARD 73G3 is employed for surfacing on machine components and tools exposed to impact, compression and abrasion at operating temperatures up to 1020ºF(550ºC) such as cutting edges for cold and hot shear blades, guillotine shears, dies, swages, hammers etc. PHILHARD 73G3 is also used to good advantages for the economic manufacture of cold and hot working tools. In such cases the carrier steel must have a tensile strength of more than (144,000 psi) (1000N/mm²)

II. DESCRIPTION:

The electrode welds in the horizontal or slightly rising positions. The weld pool is easy to control and the slag is easily removed.

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
0.32	0.53	0.63	5.10	4.10

V. HARDNESS OF WELD METAL:

45-50 HRC (275-330 Hv)

High Temperature resistance up to 1020ºF or 440º C

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 73g3.pdf