PHiLARC Products
- Carbon Steel Electrodes
- High Tensile Strength Steel
- For Low Temperature Steel
- Heat Resisting Steel Electrodes
- Atmospheric Corrosion Resisting
- Hardfacing Electrodes
- Stainless Steel Electrodes
- Nickel and Nickel Alloy Electrodes
- Cast Iron Electrodes
- Aluminum Alloy Electrodes
- Bronze and Copper Alloy Electrodes
- Gouging and Cutting Electrodes
- Solid Welding Wire (GMAW and GTAW)
- Oxy Fuel Gas Filler Rods for Brazing
- Oxy Fuel Gas Brazing FLuxes
- Submerged Arc Weding Wire and Flux
- Flux Cored Wires (FCAW)
PHILHARD 73G2
AWS Specification: NONE
JIS Specification: NONE
Other Specification: DIN 8555 E3-UM-55-ST.
I. APPLICATION:
On the strength of its great hardness, toughness and high-tempearture resistance, PHILHARD 73G2 is employed for surfacing on machine components and tools exposed to abrasion and compression with moderate impact loads and operating temperatures up to 930ºF (550ºC). These include dead centers, tongs, slide-and guideways, hot and cold cut-off attachments, valves, slides, hot shear blades, extrusion press pistons, dies, strippers, deburrers, sheet punching tools.
PHILHARD 73G2 is also used to good advantage for the economic manufacture of cold and hot working tools. In such cases the carrier steel must have a tensile strength of more than 158,000 psi (1100N/mm2) is used as parent metal for the tool.
II. DESCRIPTION:
Low-hydrogen electrode for high-temperature resistant surfacings on hot work steels exposed to impact, compression and abrasion.
III. NOTES ON USAGE:
Bigger workpieces must be preheated to 750-1110ºF (400-600ºC) and kept at this temperature during welding.
A lower preheat temperature is enough for smaller work, because it is heated adequately by the arc. Certain jobs on smaller workpieces may even be welded without preheating. The depth of the build-up may amount to 15mm max.
Slowly cool in an oven or under asbestos after welding. The weld can be machined only by grinding after it cools. If other cutting operations have to be performed on a build-up weld, annealing is necessary.
IV. TYPICAL CHEMICAL COMPOSITION OF WELD METAL (%):
C |
Si |
Mn |
Cr |
Mo |
0.35 |
0.55 |
1.35 |
7.10 |
2.55 |
V. HARDNESS OF ALL WELD METAL DEPOSIT:
As welded 55-58 HRC (600-650 Hv)
Soft annealed about 25 HRC
Hardened 64-66 HRC
VI. WELDING POSITIONS: FLAT, FILLET, VERTICAL UP
VII. 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 - 140 |
130 - 170 |