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CLASSIFICATION: E81T1-B2LC per AWS A5.29, ASME SFA 5.29

Select 810-B2L is a premium low alloy steel electrode intended for single and multiple pass, all position welding of certain 1 1/4 percent chromium and 1/2 percent molybdenum steel plate and pipe, where lower carbon levels are required in the weld deposit.

APPLICATIONS: Select 810-B2L is specially designed to weld thin-walled A335-P11 pipe or tube and is well suited for use in the fabrication of pressure vessels, heat exchangers and boilers.

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

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

WELDING POSITIONS: All positions

CHARACTERISTICS:

  • Smooth arc transfer.
  • Low spatter emission.
  • Fast freezing slag removes easily.
  • Provides improved ductility and lower hardness over conventional, higher carbon grades.
TYPICAL MECHANICAL PROPERTIES
  SR 1 Hr. at 1275° F
CO2 75% Ar/
25% CO2
Ultimate Tensile Strength (psi) 82,800 86,400
Yield Strength (psi) 72,100 76,500
Percent Elongation 28 26

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn P S Si Cr Mo
CO2
.02 .79 .013 .007 .28 1.10 .49
75 Ar/25 CO2
.02 1.12 .014 .007 .39 1.15 .44

RECOMMENDED WELDING PARAMETERS
  Optimum Range
Diam. Position Amps Volts WFS Amps Volts
1/16" Flat 350 29 350 150-400 22-34
  Overhead 225 26 170 150-310 22-28
  Vertical up 225 25 170 150-280 22-27
.052" Flat 300 28 440 100-330 19-32
  Overhead 200 26 245 150-310 21-28
  Vertical up 200 25 245 150-280 21-27
.045" Flat 250 28 450 100-300 21-32
  Overhead 200 26 300 150-280 21-29
  Vertical up 200 25 300 100-230 21-28