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CLASSIFICATION: E90C-B9-H4 per AWS A5.28, ASME SFA 5.28

Select 90C-B9 is a premium composite metal cored electrode intended for single and multiple pass welding of 9 chromium and 1 molybdenum steels. Select 90C-B9 contains small additions of niobium, vanadium and nitrogen to improve long term creep properties.

APPLICATIONS: Select 90C-B9 is used to weld 9Cr-1Mo creep resistant steels, such as A387 Gr 91 plate; A335-P91 and A369-FP91 piping; A199-T91, A200-T91 and A213-T91 tubing; A182-F91 forgings; fittings and castings of similar composition. Typical applications include power plant turbine casings, valves, headers and piping.

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

SHIELDING GAS: 75-95% Ar/balance CO2, 40-50 cfh

WELDING POSITIONS: Flat and Horizontal

CHARACTERISTICS:

  • Excellent welder appeal.
  • Smooth, stable spray with minimal spatter.
  • Greater productivity and sidewall fusion than solid wire.

    TYPICAL MECHANICAL PROPERTIES
     
    95% Ar/5% CO2 -
    SR 1 Hr @ 1375° F
    95% Ar/5% CO2 -
    SR 3 Hrs. @ 1375° F
    Ultimate Tensile Strength (psi) 105,400 103,200
    Yield Strength (psi) 88,400 84,100
    Percent Elongation 18 18

    TYPICAL DEPOSIT COMPOSITION
    Wt% Al C Cr Mn Mo N Nb Ni P S Si V
    95 Ar/5 CO2
    <.01 .10 9.00 .65 1.00 .04 .04 .35 .10 .009 .35 .20

    SUGGESTED WELDING PARAMETERS
    (95% Ar, balance CO2 Shielding Gas):
      Operating Range Optimum
    Diam. Amps
    (DCEP)
    Volts ESO Amps WFS Volts
    .045" 180-330 25-32 1/2-1" 255 400 27
    .052" 220-460 24-33 1/2-1" 300 350 27
    1/16" 230-520 24-34 3/4-1" 360 300 28

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