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CLASSIFICATIONS: E71T-1C, T-1M, E71T-9C, T-9M, E71T-12C, T-12MJ
per AWS A5.20, ASME SFA 5.20
APPROVAL: ABS 3SA-3YSA
Select 720HP is the latest addition to the Select-Arc line of premium,
flux cored, gas-shielded electrodes. This electrode is designed
for single and multiple pass welding of carbon steels in all positions.
APPLICATIONS: There are numerous applications for which Select
720HP is well suited, many of them previously reserved for EXX18
covered electrodes. This electrode excels in welding where requirements
are stringent, such as offshore platforms and pipe systems, pressure
vessels, oil and gas pipelines, petrochemical pipelines, structural
steel, bridge fabrication and many others.
DIAMETERS: .035", .045", .052", 1/16"
SHIELDING GAS: 100% CO2, 35-50 cfh
WELDING POSITIONS: All positions
CHARACTERISTICS:
Excellent bead geometry.
Extraordinary CVN toughness.
Low fume generation rates and diffusible hydrogen levels.
Exceptional resistance to moisture pickup.
Easily exceeds all “recommended requirements.”
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TYPICAL
MECHANICAL PROPERTIES
|
| |
CO2
|
75% Ar/
25%
CO2
|
| Ultimate Tensile Strength
(psi) |
81,500 |
88,000 |
| Yield Strength (psi) |
66,700 |
76,000 |
| Percent Elongation |
28.4 |
28.0 |
| CVN (ft-lb f)
@ 0° F |
110 |
101 |
| @
-20° F |
95 |
85 |
| @
-40° F |
70 |
65 |
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TYPICAL
DEPOSIT COMPOSITION
|
| Wt% |
C |
Mn |
P |
S |
Si |
Ni |
|
CO2
|
.06 |
1.30 |
.009 |
.009 |
.42 |
.39 |
|
75 Ar/25
CO2
|
.06 |
1.51 |
.009 |
.009 |
.47 |
.41 |
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RECOMMENDED WELDING PARAMETERS * |
|
| Diam. |
Position |
Amps |
Volts |
WFS |
Amps |
Volts |
| 1/16" |
Flat |
350 |
29 |
300 |
150-400 |
22-34 |
| |
Overhead |
225 |
26 |
160 |
150-310 |
22-28 |
| |
Vertical Up |
225 |
25 |
160 |
150-280 |
22-27 |
| .052" |
Flat |
300 |
28 |
360 |
100-330 |
19-32 |
| |
Overhead |
225 |
26 |
245 |
150-310 |
21-28 |
| |
Vertical Up |
225 |
25 |
245 |
150-280 |
21-27 |
| .045" |
Flat |
250 |
28 |
282 |
100-300 |
21-32 |
| |
Overhead |
200 |
26 |
265 |
150-280 |
21-29 |
| |
Vertical Up |
200 |
25 |
265 |
100-230 |
21-28 |
| .035" |
Flat |
175 |
26 |
511 |
100-250 |
21-30 |
| |
Overhead |
150 |
24 |
490 |
100-175 |
21-26 |
| |
Vertical Up |
150 |
24 |
490 |
100-175 |
21-26 |
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* With CO2 shielding gas. For 75Ar/25CO2 decrease voltage by 1 to 1.5 volts.
Notice: The results reported are based upon testing of the product under controlled laboratory conditions in accordance with American Welding Society Standards. Actual use of the product may produce different results due to varying conditions. An example of such conditions would be electrode size, plate chemistry, environment, weldment design, fabrication methods, welding procedure and service requirements. Thus the results are not guarantees for use in the field. The manufacturer disclaims any warranty of merchantability or fitness for any particular purpose with respect to its products.
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