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CLASSIFICATIONS: E90T1-B3C,
E90T1-B3M per AWS A5.29, ASME SFA 5.29
Select 91-B3 is a low alloy steel electrode for single and multiple
pass welding of certain high temperature, creep resistant materials
in horizontal fillets and the flat position. The rutile slag system
provides high welder appeal and good weld bead geometry.
APPLICATIONS: Select 91-B3 deposits weldments with a composition
matching those of ASTM A387 Gr 22 plate and A335 P22 pipe steels.
These materials are used in the fabrication of pressure vessels,
boilers, heat exchangers and other applications involved with high
temperature exposure and creep resistance.
DIAMETERS: 1/16", 5/64", 3/32"
SHIELDING GAS: 100% CO2, 35-50 cfh
WELDING POSITIONS: Flat and Horizontal
CHARACTERISTICS:
Rutile slag system provides good welder appeal and bead geometry.
Deposit composition is nominally 2 1/4% chrome and 1% molybdenum.
Higher deposition rates than covered or solid electrodes.
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TYPICAL
MECHANICAL PROPERTIES |
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SR 1 Hr @ 1275° F |
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CO2 |
75%AR/25% CO2 |
| Ultimate Tensile Strength (psi) |
108,400 |
105,500 |
| Yield Strength (psi) |
96,700 |
95,000 |
| Percent Elongation |
18 |
18 |
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TYPICAL DEPOSIT COMPOSITION |
| Wt% |
C |
Mn |
P |
S |
Si |
Cr |
Mo |
| CO2 |
.06 |
.70 |
.010 |
.010 |
.50 |
2.24 |
1.01 |
| 75/25 |
.07 |
.72 |
.010 |
.010 |
.57 |
2.45 |
1.14 |
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RECOMMENDED
WELDING PARAMETERS |
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| Diam. |
Amps
(DCEP) |
Volts |
WFS
(in/min) |
ESO |
Amps |
Volts |
WFS |
| 3/32" |
300-550 |
28-37 |
110-270 |
1±1/4 " |
425 |
29 |
180 |
| 5/64" |
280-430 |
26-33 |
140-300 |
1±1/4 " |
390 |
29 |
250 |
| 1/16" |
150-400 |
22-34 |
130-500 |
1/2-1" |
330 |
29 |
330 |
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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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