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CLASSIFICATIONS: E312T1-1, E312T1-4 per AWS A5.22

SelectAlloy 312-AP is a flux cored, stainless steel electrode designed with a weld metal composition of 30% chromium, 9% nickel and 0.1% carbon. This wire produces a two-phase weld metal with substantial ferrite in an austenitic matrix.

APPLICATIONS: SelectAlloy 312-AP is used for the welding of dissimilar metals, such as the joining of carbon steels to stainless steels high in nickel.

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

SHIELDING GASES: 100% CO2, 75-80% Ar/ balance CO2, 40-50 cfh

WELDING POSITIONS: All Positions

CHARACTERISTICS:

  • High level of ferrite makes the weld metal very resistant to cracking, even when highly diluted.
  • Superb all position electrode performance.
  • Flat, well washed beads with minimal weaving.
  • Spatter is very low.
  • Slag peeling is excellent.
Typical Mechanical Properties:
  CO2*
Ultimate Tensile Strength (psi) 114,000
Yield Strength (psi) 90,000
Percent Elongation 25
* Strength levels will be slightly higher with Ar/20-25% CO2

Typical Deposit Composition:
Wt% C Mn Si Ni Cr N
  .10 .80 .70 8.70 29.50 .05

Ferrite Number (WRC, 1992) - 60

Select-SAI all position electrodes do not contain bismuth.

TYPICAL WELDING PARAMETERS (CO2) *
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" 130 24 250 5/8 - 3/4" 5.4
.045" 160 26 300 5/8 - 3/4" 6.3
.045" 200 28 425 5/8 - 3/4" 9.2
.045" 270 34 780 5/8 - 3/4" 16.2
           
1/16" 170 25 150 3/4 - 1" 5.4
1/16" 215 27 195 3/4 - 1" 7.0
1/16" 250 28 240 3/4 - 1" 8.6
1/16" 305 29 320 3/4 - 1" 11.5

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

Select-SAI all position electrodes do not contain bismuth.