Nikko Steel Kawat Las Elektroda CR-718 (MMA Electrodes For High Tensile Low Alloy Steels)

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Impacts down to -50 C.
The design emphasis of the chemically basic flux is engineered to ensure the
optimum weld metal properties demanded by the specification are fully met.
As with RD-718 it is suitable for all grades of C-Mn structural steels.


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Product Description : 

Impacts down to -50 C.

The design emphasis of the chemically basic flux is engineered to ensure the

optimum weld metal properties demanded by the specification are fully met.

The basic flux containing the appropriate alloying elements with a controlled

balanced addition of iron powder is extruded onto a high purity ferritic core wire

with a blend of silicates that ensures both coating strength and a coating

resistant to subsequent moisture absorption. 

Welding Features Of The Electrode :

The chemical nature of the flux together with a significant proportion of iron

powder ensures maximum deposition efficiency without detracting from its ability

to be used in all positions except vertical down.

Overall the arc is very stable, slag detachability is good and metal recovery is

some 115% with respect to the core wire. 

Application And Materials To Be Welded :

As with RD-718 it is suitable for all grades of C-Mn structural steels. However, it

is used to best advantage on fully deoxidised C-Mn steels when high toughness

values are specified down to -45 C.

These toughness properties are maintained even after extended PWHT making it

ideal for pressure vessel work. The low weld Si and high Mn to Si ratio ensure

maximum resistance to solidification cracking on thick restrained sections. 

Specifications for Nikko Steel Kawat Las Elektroda CR-718 (MMA Electrodes For High Tensile Low Alloy Steels)

Uk. Elektroda 2.6 mm or 3.2 mm or 4.0 mm or 5.0 mm

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