4 Mild
Steel Cored Wires Dual
Shield R-70 Ultra AWS
Class E70T-9/E70T-9M Code
and Specification Data: AWS
A5.20, ASME SFA 5.20, CSA W48.5 Military
- MIL-E-24403/1, MIL 70T-1C Description:
Dual Shield R-70 Ultra is a low fuming
flux cored wire with a balanced chemistry that allows for a greater
tolerance of mill scale and surface
oxides than is normally associated with an E70T-1 class of wire. The
“Ultra” series produces smoother
arc characteristics and lower welding fumes than other non-ultra types.
Notch toughness in the as welded condition
is also improved with this wire. Bead contour is flat to slightly
convex and slag coverage is complete.
Dual Shield R-70 Ultra is a flux cored
wire for single or multipass applications on low or medium carbon
steels. It is intended for use in the
flat and horizontal positions with CO2 shielding
only. Areas of application include
railcar, heavy equipment, and general fabrication. Shielding
Gas: CO2 Typical
Mechanical Properties As
Welded Yield Strength,
psi (MPa) 70,000
(483) Tensile
Strength, psi (MPa) 80,000
(555) %
Elongation in 2" (51 mm) 25
% Reduction in Area
55 Continued
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