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EST

AWS/SFA 5.15 EST, AC-DC+
UNS K01520

Washington Alloy EST is a non-nickel, nonmachinable cast iron electrode. It is the most economical way to go for repairing various kinds of cast iron precincts — providing that machinability of the weld deposit is not required and where weld shrinkage stress is not a concern. Since the core wire is steel, the weld deposits will have a higher tensile strength (65,000 psi) than Nickel 99, however a color match of the base metal should not be expected. Washington Alloy EST melts at relatively low temperatures which permit the use of low welding currents. This electrode may be used in any position utilizing AC or DC (reverse polarity).

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APPLICATIONS

Commonly used on gears, motor housings, machine parts, farm equipment, large frames, or any other cast iron part where the appearance of the weld deposit is not important.

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TYPICAL WELD METAL CHEMISTRY (%) 

C

0.150

Si

0.550

Mn

0.370

P

0.015

S

0.003

Fe

Balance

TYPICAL MECHANICAL PROPERTIES OF WELD METAL (as welded)

Tensile strength (psi)

65,000

Yield strength (0.2% offset) (psi)

50,000

Elongation in 2" (%)

33%

Brinell hardness

350

SIZES AND RECOMMENDED CURRENT RANGES* (AC/DC+)

 

Sizes

Amperage

3/32 (2.4mm) x 12"

60-90

1/8 (3.2mm) x 14"

90-130

5/32 (4.0mm) x 14"

120-160

3/16 (4.8mm) x 14"

150-200

*These settings are for flat or downhand positions. For overhead welding reduce 5-15 amps and for vertical welding reduce 10-20 amps.

Packaging: 10 lb. tubes/60 lb. master carton

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