CHINA ELECTRODE AND MACHINERY CO., LTD.

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Low Alloy Arc Welding Electrodes

C-78A1

AWS E7018A1

DescriptionG

The C-78A1 is an outstanding welding electrodes for welding the 0.5% Molybdenun steel and other low alloy steels. The coating is specially formulated to resist moisture pickup under conditions of high heat and humidity. This electrode offers resistance to moisture reabsorption which helps prevent hydrogen cracking and aids in elimination of starting porosity. Definitely electrode with operator appeal.

ApplicationG

The C-78A1 is used primarily for pressure vessel applications. This includes construction and maintenance of boilers, piping and tubing.

Typical weld metal propertiesG (Weld Metal Analysis)

Carbon KKKKKKKKKKKKKKKKKKKKKK 0.07
Manganese KKKKKKKKKKKKKKKKKKKK. 0.81
Silicon KKKKKKKKKKKKKKKKKKKKKK 0.55
Phosphorus KKKKKKKKKKKKKKKKKKKK. 0.012
Sulphur KKKKKKKKKKKKKKKKKKKKK.. 0.010
ChromiumKKKKKKKKKKKKKKKKKKKK.. -----
MolybdenunKKKKKKKKKKKKKKKKKKKK0.55
Nickel KKKKKKKKKKKKKKKKKKKKK.. -----

Mechanical properties:

Tensile Strength (Kg/mm2) KKKKKKKKKKKK... 58.0 ~ 65.0
Yield Point (Kg/mm2) KKKKKKKKKKKKKK... 55.0 ~ 60.0
Elongation (%) KKKKKKKKKKKKKKKKK.. 28.0 ~ 35.0
Reduction of Area (%) KKKKKKKKKKKKKK.. 55.0 ~ 70.0
Charpy V-Notch Impact Values KKKKKKKKKKKK----

Available diameter and recommended operating rangesG
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@ F. & H. V fillet V. & O.H.
3.2 X350 m/m
4.0 X400 m/m
5.0 X450 m/m
6.0 X450 m/m
 90 ~ 130 Amps
150 ~ 200 Amps
190 ~ 240 Amps
250 ~ 320 Amps

 85 ~ 120 Amps
110 ~ 170 Amps
160 ~ 190 Amps

Type of powerGA.C. or D.C.E.P.
ApprovalsG

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Last modified: 2007-10-09