Select 81-A1 Close Window
 Print Sheet


CLASSIFICATION: E80T1-A1C per AWS A5.29, ASME SFA 5.29

Select 81-A1 is a low alloy steel electrode intended for single and multiple pass welding of certain carbon-molybdenum steels where the addition of 1/2 percent molybdenum is required in the deposited weld metal.

APPLICATIONS: Select 81-A1 is well-suited for welding certain C-MO steels used in the fabrication of boilers and pressure vessels such as ASTM A161, A204 and A302 Gr. A plate.

DIAMETERS: 1/16", 5/64", 3/32"

SHIELDING GAS: 100% CO2, 35-50 cfh

WELDING POSITIONS: Flat and Horizontal

CHARACTERISTICS:

  • Spray-like arc transfer with very low spatter.
  • Exhibits minimum of convexity.
  • Complete slag coverage with easy detachment.
TYPICAL MECHANICAL PROPERTIES
  CO2
SR 1 Hr. at 1150° F
Ultimate Tensile Strength (psi) 90,300
Yield Strength (psi) 79,600
Percent Elongation 24

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn P S Si Mo
CO2
.05 .65 .010 .010 .45 .58

RECOMMENDED WELDING PARAMETERS
  Operating Range Optimum
Diam. Amps Volts WFS Amps Volts
1/16" 350 29 300 150-400 22-34
5/64" 390 29 250 280-430 26-33
3/32" 450 31 210 275-550 26-34