SelectAlloy 309L close window
Print Sheet  


CLASSIFICATIONS: E309LTO-1, E309LTO-4 per AWS A5.22
(Also meets E309TO-1, E309TO-4 per AWS A5.22)

APPROVALS: CWB E309LTO-1/4 (CO2/C25)

SelectAlloy 309L is a gas-shielded, flux cored, stainless steel electrode with a nominal weld composition of 24% chromium, 13% nickel and a maximum carbon content of 0.04%. Carbide precipitation is minimized and the weld metal more resistant to intergranular corrosion due to the wire's low carbon content.

APPLICATIONS: The welding of refinery and chemical processing equipment and furnace and auto exhaust parts is ideal for SelectAlloy 309L. This electrode is used to weld Type 309 stainless steel, to join carbon and low alloy steels to austenitic stainless steels, to weld 304 clad sheets and for the first layer cladding of carbon steel.

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

SHIELDING GASES: 100% CO2, 75-80% Ar/balance CO2, 35-50 cfh

WELDING POSITIONS: Flat and Horizontal

CHARACTERISTICS:

  • Smooth arc transfer with minimal spatter.
  • Produces finely rippled, even and well washed bead.
  • Minimizes cleanup time due to freely peeling slag.
Typical Mechanical Properties (CO2)*
Ultimate Tensile Strength (psi) 88,000
Yield Strength (psi) 69,200
Percent Elongation 32

* Strength levels will be slightly higher w/Ar+20-25% CO2

Typical Deposit Composition:
Wt% C Mn Si Ni Cr N
CO2 .03 1.00 .67 13.20 24.60 .05

Ferrite Number (WRC, 1992) - 19

Typical Welding Parameters (CO2)**
Diameter WFS (ipm) Amperage Voltage 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"
200
120
25
5/8-3/4"
4.3
.045"
335
170
27
5/8-3/4"
7.1
.045"
440
200
29
5/8-3/4"
9.3
.045"
780
290
35
5/8-3/4"
17.0
1/16"
150
150
24
3/4-1"
5.0
1/16"
235
210
28
3/4-1"
7.8
1/16"
345
270
31
3/4-1"
11.3
1/16"
500
350
34
3/4-1"
17.0

** 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.