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Castarc (ESt) is a nickel free cast iron
problem solving electrode. It seals in
porosity generating contaminants prior
to finish welding with nickels. This is a
great choice for non-machinable welds
on machine bases, furnace grates and
exhaust manifolds. This alloy has a
perfect color match to cast iron.
AWS Specification
A5.15
AWS Classification ESt
Welding Current
DCEP
Typical Wire Chemistry
C 0.15
Mn 0.60
Si 0.15
S 0.04
P 0.04
Fe REM
Typical Mechanical Properties
(As Welded)
Yield Strength, ksi 50
Tensile Strength, ksi 62
Elongation%, min 20
Brinell Hardness 250 - 400
Welding Positions
F,V,OH,H
Available Diameters and suggested
Operating Range in Amps
3/32" 45 - 85
1/8" 70 - 125
5/32" 95 - 150
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