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CLASSIFICATIONS: E81T1-B2C, E81T-B2M per AWS A5.29, ASME SFA 5.29

Select 810-B2 is a low alloy steel electrode designed for single and multiple pass welding, in all positions, of certain chromium-molybdenum steel plate and pipe where 1 1/4% Cr and 1/2% Mo are required in the weld deposit.

APPLICATIONS: Select 810-B2 is designed to weld steels subject to high temperature service such as A387 Gr. 11 plate and A335 P11 pipe. These materials are used in the fabrication of boilers, heat exchangers and pressure vessels.

DIAMETERS: .035", .045", .052", 1/16"

SHIELDING GAS: 100% CO2, 75-80% Ar/20-25%
CO2, 35-50 cfh

WELDING POSITIONS: All positions

CHARACTERISTICS:

  • Superb welder appeal with excellent mechanical properties.
  • Low spatter emission.
  • Fast freezing slag removes easily.
  • Resists creep and maintains strength at elevated temperatures.
TYPICAL MECHANICAL PROPERTIES
 
SR 1 Hr. at 1275° F
CO2 75% Ar/
25% CO2
Ultimate Tensile Strength (psi) 94,200 98,900
Yield Strength (psi) 84,200 85,200
Percent Elongation 20 22

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn P S Si Cr Mo
CO2 .07 .81 .010 .010 .60 1.31 .45
75 Ar/ 25 CO2 .09 .87 .010 .010 .60 1.32 .49

RECOMMENDED WELDING PARAMETER
  Optimum * Range *
Diam. Position Amps Volts WFS
(ipm)
ESO Amps Volts
1/16" Flat 330 29 330 1/2-1" 150-400 22-34
  Overhead 225 26 180 1/2-1" 150-310 22-28
  Vertical up 225 25 180 1/2-1" 150-280 22-27
.052" Flat 275 28 400 1/2-1" 140-330 19-32
  Overhead 200 26 245 1/2-1" 150-290 21-28
  Vertical up 200 25 245 1/2-1" 140-270 21-27
.045" Flat 250 28 450 1/2-1" 130-300 21-32
  Overhead 190 26 305 1/2-1" 150-280 21-30
  Vertical up 190 25 305 1/2-1" 130-260 21-29
.035" Flat 200 27 600 3/8-3/4" 125-250 21-30
  Overhead 175 25 490 3/8-3/4" 115-220 21-28
  Vertical up 170 25 450 3/8-3/4" 120-215 21-28

* With CO2 shielding gas. For 75% Ar/25%-CO2 shielding gas reduce the voltage by 1 to 1.5 volts.