Page 118 - ProStar Product Guide

FILLER METALS

™
ProStar Shielded Flux-Cored Wire

ProStar FC-70 Wire ProStar FC-70LF Wire

SPECIFICATION SPECIFICATION
E70T-1/1M, E70T-9/9M per AWS A5.20, E70T-1 H8, E70T-9 H8 per AWS A5.20,
ASME SFA 5.20, CWB E492T-9 H8, E492T-9M H8 ASME SFA 5.20, CWB E492T-9 H8

Wire dia Package Part No. Wire Dia Package Part No.
3/32" 60 lb (27 kg) coil PRSS272029-702 1/16" 60 lb (27 kg) coil PRSS247019-702

CHARACTERISTICS CHARACTERISTICS

• Good performance over the entire range of amperage • Low Fumes
• More deoxidation than the usual E70T-1 for improved • Flat bead profile with multi-pass fillet welds
performance on rusted and scaled plate • Easy slag removal
• Excellent weld bead configuration on horizontal fillets • Resists weld cracking on heavy plate and restrained joints
• An outstanding general purpose E70T-1 • Very flexible amperage/voltage range
• Caution should be exercised on heavy, multiple-pass
weldments ProStar FC-70LF wire is designed for general-purpose
welding with minimized fume generation rates utilizing
ProStar FC-70 wire offers good arc stability over the
100% CO gas. ProStar FC-70LF wire is specially
complete recommended welding range. Spatter losses 2
formulated with added deoxidizers to allow welding
are very low, the slag removes easily and cleanly, and
through rust, mill scale and light oil with minimal need
bead appearance is excellent. High deoxidation enables
for pre-cleaning. Primarily designed for single- or multi-
ProStar FC-70 wire to weld over mill scale, rust and other
pass welding in the flat and horizontal positions, ProStar
contaminants better than most T-1 wires. However, this
FC-70LF wire welds mild steel and low alloy steel with
level of deoxidation will also cause increased hardening
very light spatter and particulate fume generation.
as multiple layers are welded, and caution should be
exercised in welding thick or highly-restrained joints. Shielding Gas Welding Positions
ProStar FC-70 wire is used for single- and multiple-pass 100% CO2, 35 – 50 C.F.H. Flat and horizontal
welding in the flat and horizontal positions using 100%
CO 2 or 75% Ar/25% CO 2 shielding gas. Typical Mechanical Properties*
Tensile Strength 86,900 psi (599 MPa)
Shielding Gas Welding Positions Yield Strength 78,000 psi (538 MPa)
100% CO2, 75% Ar/25% CO2, Flat and horizontal Elongation in 2" 24%
35 – 50 cfh
CVN at 0 °F (-18 °C) 61 ft/lb (82 Joules)
CVN at -20 °F (-29 °C) 53 ft/lb (72 Joules)
Typical Mechanical Properties*
Tensile Strength 87,000 psi (662 MPa)
Typical Undiluted Weld Metal Chemistry
Yield Strength 81,000 psi (579 MPa)
Carbon (C) 0.24
Elongation 24%
Manganese (Mn) 1.34
CVN at -20 °F (-29 °C) 36 ft/lb (49 Joules)
Silicon (Si) 0.49
* Properties determined with 100% CO shielding gas
2 Phosphorus (P) 0.013
Sulphur (S) 0.010
Typical Undiluted Weld Metal Chemistry
Carbon (C) 0.07 Phosphorus (P) 0.010
Manganese (Mn) 1.37 Sulphur (S) 0.011
* The data contained herein is based on testing performed under standard
Silicon (Si) 0.61 laboratory conditions. In normal practice, the results obtained may vary depending
upon welding parameters, weld metal cooling rate, and the base plate being
joined. The user should always test the electrode prior to its application.

C18 1-800 225 8247 www.praxairwelding.com