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CLASSIFICATION: E80T5-B2C per AWS A5.29, ASME SFA 5.29

Select 85-B2 is intended for single and multiple pass welding of certain chromium-molybdenum steels, plate and pipe requiring 1 1/4% chrome and 1/2% molybdenum in the weld deposit. The basic slag limits welding to horizontal fillets and the flat position.

APPLICATIONS: Select 85-B2 is a good choice for welding steels such as ASTM A387 Gr 11 plate and A335 Gr P11 pipe. These steels are used in high temperature applications requiring creep resistance. The basic slag imparts better CVN toughness than rutile slag electrodes when welding these steels, which are used in the construction of boilers, heat exchangers and pressure vessels.

DIAMETERS: .045", 1/16", 5/64", 3/32"

SHIELDING GAS: 100% CO2, 35-50 cfh

WELDING POSITIONS: Flat and Horizontal

CHARACTERISTICS:

  • Excellent mechanical properties with basic slag.
  • Better CVN toughness properties than rutile-slag electrodes.
  • Low weld metal hydrogen.

    TYPICAL MECHANICAL PROPERTIES
     
    SR 1 Hr. at 1275° F
    CO2
    Ultimate Tensile Strength (psi) 94,000
    Yield Strength (psi) 82,000
    Percent Elongation 25
    CVN (ftlb f) @ -20° F 40

    TYPICAL DEPOSIT COMPOSITION
    Wt% C Mn P S Si Cr Mo
    CO2
    .06 .70 .010 .010 .40 1.25 .52

    SUGGESTED WELDING PARAMETERS
      Optimum Range
    Diam. Amps Volts WFS Amps Volts
    .045" 250 28 380 120-320 22-31
    1/16" 300 29 320 250-450 26-34
    5/64" 370 28 250 280-500 26-33
    3/32" 400 28 185 350-550 26-34
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