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CLASSIFICATION: ER70S-6 per AWS/ANSI A5.18, ASME SFA 5.18

Select 70S-6NC contains higher amounts of manganese and silicon than a 70S-3 electrode, making it more tolerant to mill scale and mild contaminants. This premium solid, "MIG wire", which contains no copper coating, is intended to weld steels in the 55,000-70,000 psi yield strength range.

APPLICATIONS: Select 70S-6NC is particularly well suited for welding steels, both plate and sheet, which contain medium to high levels of mill scale. It is a wise choice when improved toe wetting, bead profile and tie-in are required. Typical applications include welding of pipe, structural steel, sheet steel, pressure vessels and steel buildings.

DIAMETERS: .035", .045", .052", 1/16"

SHIELDING GASES: 100% CO2, 75-95% Ar/ balance CO2, 95-98% Ar/ balance O2, 30-50 cfh

WELDING POSITIONS: All Positions

CHARACTERISTICS:

  • Excellent feedability and weldability performance.
  • Superb feeding over long conduit distances and at high wire feed speeds.
  • Welding fume is virtually free of copper or its oxides.
  • More tolerant to mill scale and mild contaminants.
TYPICAL MECHANICAL PROPERTIES (CO2)
Ultimate Tensile Strength (psi) 84,100
Yield Strength (psi) 68,900
Percent Elongation 28
CVN (ftlb f) @ 0 °F 45

TYPICAL DEPOSIT COMPOSITION
Wt% C Mn P S Si Cu
  .08 1.54 .009 .010 .88 .04

TYPICAL SPRAY ARC PARAMETERS (Argon-2% O2):
  Operating Range Optimum
Diam. Amps
(DCEP)
WFS
(in/min)
Volts ESO Amps WFS Volts
.035" 180-240 400-560 24-27 1/2-3/4" 200 475 26
.045" 260-335 300-500 25-30 1/2-1" 300 350 27
.052" 280-400 270-400 26-32 1/2-1" 325 310 28
1/16" 290-400 175-280 26-37 1/2-1" 340 200 28

OPTIMUM SHORT ARC PARAMETERS
(Argon-25% CO2)
Diam. Amps WFS Volts ESO
.035" 130 245 17 3/8"
.045" 160 150 18 3/8"
.052" 165 140 18 3/8"