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CLASSIFICATIONS: E308LT0-4 per AWS A5.22

Composed of 20% chromium, 10% nickel and a maximum carbon content of 0.04%, SelectAlloy 308L CRYO is a gas-shielded, flux cored, stainless steel electrode designed for cryogenic applications where good weld metal toughness is required.

APPLICATIONS:SelectAlloy 308L CRYO is utilized in the fabrication and repair of cryogenic components which require weld metal toughness at liquid nitrogen temperatures (-320 F).

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

SHIELDING GASES: 75-80% Ar/balance CO2, 35-50 cfh

WELDING POSITIONS: Flat and Horizontal

CHARACTERISTICS:

  • Produces finely rippled, even and well washed bead.
  • Arc transfer is smooth with minimal spatter.
  • Slag peels freely.

  • Typical Mechanical Properties
     
    75% Ar/
    25%
    CO2
    Ultimate Tensile Strength (psi) 79,800
    Yield Strength (psi) 51,100
    Percent Elongation 49
    CVN (ftlb f) @ -320°F 23
    Lateral Expansion @ -320°F (mils) 21

    Typical Deposit Composition:
    Wt% C Mn Si Ni Cr N
    75Ar/25CO2 .02 1.50 .70 10.50 18.70 .05

    Ferrite Number (WRC, 1992) - 4

    TYPICAL WELDING PARAMETERS *
    Diam. Amps
    Volts WFS
    (in/min)
    ESO
    (in.)
    Dep. Rate
    (lbs/hr)
    .035" 110 25 300 5/8-3/4" 3.3
    .035" 150 26 500 5/8-3/4" 5.4
    .035" 165 27 600 5/8-3/4" 6.3
    .035" 175 28 700 5/8-3/4" 7.7
               
    .045" 120 27 200 5/8 - 3/4" 4.3
    .045" 170 29 335 5/8 - 3/4" 7.1
    .045" 200 31 440 5/8 - 3/4" 9.3
    .045" 290 37 780 5/8 - 3/4" 17.0
               
    1/16" 150 26 150 3/4 - 1" 5.0
    1/16" 210 30 235 3/4 - 1" 7.8
    1/16" 270 33 345 3/4 - 1" 11.3
    1/16" 350 36 500 3/4 - 1" 17.0

    * Optimum conditions are in boldface type. Lower by 2 volts when using AR+20-25% CO2.

    Select-SAI all position electrodes do not contain bismuth.