Lincoln Electric 2HBG - Manual (Page 16)

16
Pipeliner
www.lincolnelectric.com
1G 2F 2G
3G ➔ 4G 5G ➔
Pipeliner Autoweld G70M is
specifically designed for use with
the Autoweld pipe welding system
to deliver outstanding weld
properties.
PIPELINER AUTOWELD G70M
AWS E71T-1MJH8 & E71T-9MJH8 Gas-Shielded Flux-Cored (FCAW-G) Wire Electrode
WELDING POSITIONS
ADVANTAGE LINCOLN
• Specifically designed for use with
Autoweld™ pipe welding system on
pipe up to X70.
• Tightly controlled cast and helix
assure proper wire placement every
time.
• Excellent mechanical properties —
impacts are normally in the 60 ft•lbf
@ -20°F (-29°C), as welded.
DIAMETERS / PACKAGING
SHIELDING GAS
75-80% Ar / Balance CO2
Flow Rate 40-50 CFH (19-24 l/min.)
DEPOSIT COMPOSITION -As Required per AWS A5.20-95
%C %Mn %P %S %Si %Ni
Requirements
AWS E71T-1MJH8
.18 1.75 .03 .03 .90 .50
AWS E71T-9MJH8 max. max. max. max. max. max.
Typical Results
75% Ar / 25% CO2
.05 1.62 .01 <.01 .46 .39
Diameter 10 Lb. (4.5 kg)
in. (mm) Plastic Spool
Foil Bag
.052 (1.3) ED030928
DIFFUSIBLE HYDROGEN
- As Required per AWS A5.20-95
(mL/100g
weld deposit)
Requirements
E71T-1MJH8
8
& E71T-9MJH8
Typical Results 4 - 8
75-80% Ar/CO
2
MECHANICAL PROPERTIES - As Required per AWS A5.20-95
NOTE: Pipeliner electrodes
are manufactured under
lot control. A Certificate
of Test showing actual
deposit chemistry and
mechanical properties
per AWS A5.20 is available
on request from the
factory for every lot
of electrode.
(Fax 216-383-8386).
Charpy V-Notch
Yield Strength Tensile Strength Elongation ft•lbf (Joules)
psi (MPa) psi (MPa) (%) @ -40ºF (-40ºC)
Required 58,000 (400) 70,000 (480) 22 20 (27)
AWS E71T-1MJH8 min. min. min. min.
& E71T-9MJH8
Typical Results
75% Ar / 25% CO
2
82,700 93,200 26 63 (85)
(570) (642)
• Smooth, spray type arc transfer and
low spatter level.
• Slag system provides for puddle
support, good wetting and bead
shape in all positions.
• Manufactured under a quality
system certified to ISO 9001
requirements.
• Manufactured to actual lot control.
Actual certificates of conformance
are available upon request.
TYPICAL APPLICATIONS
• All position wire designed to weld
pipe up to X70.
TYPICAL OPERATING
PROCEDURES
Diameter
Parameters .052 in. (1.3 mm)
Polarity DC+
CTWD (1) – in. (mm) 3/4 (19)
Wire Weight – lbs/in. (g/m) .482/1000 (8.61)
Wire Feed Speed – in/min (m/min) 150-450 (3.8-11.4)
Arc Voltage (volts) 22-31
Approx. Current (amps) 155-315
Melt-off Rate – lbs/hr (kg/hr) 4.4-13.3 (2.0-6.0)
Deposition Rate – lbs/hr (kg/hr) 3.6-10.9 (1.6-4.9)
(1) CTWD (Contact
Tip to Work
Distance).
Subtract 1/4" to
calculate Electrical
Stickout.