SUPRATHERME,AWS: 5.1 E7018
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SUPRATHERME,AWS: 5.1 E7018

SMA (EXTRA); Hardfacing Electrodes

Description

SMA(Extra) is a basic coated electrode producing an austenitic manganese steel weld metal which is crack resistant. The weld metal work hardens under impact loads in service and has excellent resistance to abrasion in combination with high impact. It is ideally suited for rebuilding of austenitic manganese steels to enhance the life of these components. The weld deposit work hardens in service and attains maximum resistance to abrasion combined with impact. Some typical applications include crusher jaws, hammer, bucket teeth and lips, manganese steel castings, etc.

Approvals

TYPICAL CHEMICAL COMPOSITION OF ALL WELD METAL (%)


Element
 C Mn Si 
 P

S
Percent
 0.85 12.5 0.60 0.025 0.018


HARDNESS:

 (Three layers deposit on mild steel)

170 240 BHN (As welded)

Work hardens up to 550 BHN (UNDER IMPACT)

CURRENT & PACKING DATA: AC / DC (+)


Size (mm)
 6.3x450
 5x450
 4x350
 3.15x350
Current Range (Amps)
 240-290
 170-230
 140-180
 100-140
Weight / Carton (kgs)
 20
 35 55
 75

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