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Description¡G
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.
Application¡G
The C-78A1 is used primarily for pressure vessel
applications. This includes construction and maintenance
of boilers, piping and tubing.
Typical weld
metal properties¡G (Weld Metal Analysis)
Carbon
¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 0.07
Manganese ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K. 0.81
Silicon ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K 0.55
Phosphorus ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K. 0.012
Sulphur ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. 0.010
Chromium¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. -----
Molybdenun¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K0.55
Nickel ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. -----
Mechanical properties:
Tensile Strength (Kg/mm2)
¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K... 58.0 ~ 65.0
Yield Point (Kg/mm2) ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K... 55.0 ~ 60.0
Elongation (%) ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. 28.0 ~ 35.0
Reduction of Area (%) ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K.. 55.0 ~ 70.0
Charpy V-Notch Impact Values ¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K¡K----
Available diameter and recommended operating ranges¡G
¡@
| ¡@ |
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 power¡GA.C. or D.C.E.P.
Approvals¡G |
