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PHILHARD 7200

AWS Specification :AWS A5.13 E FeMn-A

JIS Specification : NONE

Other Specification : DIN 8555: E 7-UM-250-KP

I. APPLICATIONS:

The  main application areas are the building industry, quarries and mines for surfacing worn high Mn steel parts e.g. excavator pins, buckets and teeth, mill hammers, crusher jaws, cones and beaters, impeller bars, railway building machinery, shunts, heart and cross pieces.

II. DESCRIPTION:

PHILHARD 7200 is predominantly suited for tough and crack resistant joinings and surfacings on parts of high Mn-steel subject to extreme impact, compression and shock. Buildups on C-steel are also possible.

     The  High Mn-content produces a fully austenitic deposit. The deposit is highly workhardening and hardens during service from originally 200-250 HB to 450 HB. Machining is possible with tungstene carbide tools.

III. NOTES ON USAGE:

Hold electrode as vertically as possible. Welding should be done at low temperature. Interpass temperature should not exceed 250° C. It is therefore recommended to weld short beads and to allow for continuous cooling during welding or to place the workpiece in a cold water bath with only the welding area sticking out of water.

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

C	Si	Mn	Cr	Mo	Ni
0.70	0.27	13.00	4.50	0.53	4.00

V. HARDNESS OF WELD METAL:

Hardness, as welded, 3 layers weld metal         95 - 100 HRB (220 – 260 Hv)

work hardened                                                    43 – 45 HRC (420 – 450 Hv)

VI. WELDING POSITIONS: FLAT, VERTICAL UP, OVERHEAD

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

Electrodes	Ø mm x L	3.2 x 350	4.0 x 350	5.0 x 350
Amperage	A	110-140	150-180	180-210

 

 

 

 

•  philarc-philhard 7200.pdf