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Ultracore stainless, flux-cored wire, plastic spool

Diameters / Packaging

Diameters
 33 lb Spool
0.045 in (1.1 mm) ED031672
1/16 in (1.6 mm) ED031674

UltraCore® 712C

Flux-Cored Gas-Shielded (FCAW-G)

CLASSIFICATIONS:
E71T-12C-JH8
E71T1-C1A4-CS2-H8

UltraCore® 712C from Lincoln Electric is a versatile E71T-12 choice with consistently high impact toughness values.

Diameter

Select Diameter

  • 0.045 in (1.1 mm)
  • 1/16 in (1.6 mm)

Package

Select Package

  • 33 lb Spool

DETAILS

For tank and shipbuilding applications using straight CO2, UltraCore® 712C is a versatile E71T-12 choice with consistently high impact toughness values — even with a notch offset of 2.5mm from weld centerline.

Features

  • Capable of producing weld deposits with impact toughness exceeding 27 J (20 ft·lbf) at -40°C (-40°F)
  • Designed for welding with 100% CO2 shielding gas
  • Premium arc performance and bead appearance
  • ProTech® foil bag packaging

Typical Applications

  • Bridge fabrication
  • Pressure vessels
  • Shipbuilding
  • Offshore
  • ASME related applications

Welding Positions

  • All

Shielding Gas

  • 100% CO2

Service Information

Documentation

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BEFORE USE, READ AND UNDERSTAND THE SAFETY DATA SHEET (SDS) FOR THIS PRODUCT AND SPECIFIC INFORMATION PRINTED ON THE PRODUCT CONTAINER. SDS Search page

CONFORMANCE

CONFORMANCES SPECIFICATION CLASSIFICATION
AWS AWS A5.20 E71T-12C-JH8, E71T-1C-JH8, E71T-9C-JH8
AWS AWS A5.36 E71T1-C1A4-CS2-H8
ABS ABS - Part 2 3YSA H10
CWB CSA W48 E491T1-C1A4-CS1-H8 (E491T-9J-H8)
DNV-GL DNV - 2.9 III YMS H10
LR LR - Chapter 11 3YS H10

MECHANICAL PROPERTIES

Classification Shielding Gas Polarity Yield Strength @ 0.2% Offset
MPa (ksi) 		Tensile Strength
MPa (ksi) 		Elongation
% 		Charpy V-Notch
J (ft-lbs) @ -40°C (-40°F)
E71T-12C-JH8 Requirement 100% CO2 DC+ 400 (58) min. 480-620 (70-90) 22 min. 27 (20) min.
E71T-1C-JH8 Requirement 100% CO2 DC+ 400 (58) min. 480-660 (70-95) 22 min. 27 (20) min.
E71T-9C-JH8 Requirement 100% CO2 DC+ 400 (58) min. 480-660 (70-95) 22 min. 27 (20) min.
E71T1-C1A4-CS2-H8 Requirement 100% CO2 DC+ 400 (58) min. 480-660 (70-95) 22 min. 27 (20) min.
Typical Result, As-welded 100% CO2 DC+ 520 (75) 570-620 (82-89) 22 30-138 (22-102)

DEPOSIT COMPOSITION

Classification Shielding Gas Polarity %B %C %Cr %Cu %Mn %Ni %P %S %Si %V Diffusible Hydrogen
mL/100g Weld Metal
E71T-12C-JH8 Requirement 100% CO2 DC+ 0.12 max. 1.60 max. 0.03 max. 0.03 max. 0.90 max. 8.0 max.
E71T-1C-JH8 Requirement 100% CO2 DC+ 0.12 max. 1.75 max. 0.03 max. 0.03 max. 0.90 max. 8.0 max.
E71T-9C-JH8 Requirement 100% CO2 DC+ 0.12 max. 1.75 max. 0.03 max. 0.03 max. 0.90 max. 8.0 max.
E71T1-C1A4-CS2-H8 Requirement 100% CO2 DC+ 0.12 max. 1.60 max. 0.030 max. 0.030 max. 0.90 max. 8 max.
Typical Result 100% CO2 DC+ 0.0036-0.006 0.03-0.05 0.06 max. 0.06 max. 1.28-1.47 0.36-0.43 0.020 max. 0.012 max. 0.34-0.43 0.03 max. 2-5.1

TYPICAL OPERATING PROCEDURES

Diameter Shielding Gas Polarity CTWD
mm (in.)⁽¹⁾ 		Wire Feed Speed
m/min (in/min) 		Voltage
volts 		Approx. Current
amps 		Melt-off Rate
kg/hr (lb/hr) 		Deposition Rate
kg/hr (lb/hr) 		Efficiency
%
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 4.4 (175) 24-29 115 1.8 (3.9) 1.5 (3.4) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 6.4 (250) 25-30 140 2.5 (5.6) 2.2 (4.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 7.6 (300) 26-31 155 3.1 (6.8) 2.6 (5.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 8.9 (350) 26-31 170 3.6 (7.9) 3.1 (6.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 10.2 (400) 26-31 185 4.1 (9.0) 3.5 (7.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 11.4 (450) 27-32 200 4.6 (10.1) 4.0 (8.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 12.7 (500) 27-32 215 5.1 (11.3) 4.4 (9.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 14.0 (550) 28-33 230 5.6 (12.4) 4.9 (10.8) 85-88
0.045 in (1.1 mm) As-Welded with 100% CO2 DC+ 25 (1) 15.2 (600) 28-33 245 6.1 (13.5) 5.3 (11.7) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 3.8 (150) 24-29 140 2.1 (4.7) 1.7 (3.8) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 5.1 (200) 25-30 160 2.9 (6.3) 2.4 (5.2) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 6.4 (250) 26-31 180 3.5 (7.8) 3.0 (6.5) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 7.6 (300) 26-31 205 4.3 (9.4) 3.6 (7.9) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 8.9 (350) 27-32 225 5.0 (11.0) 4.2 (9.2) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 9.5 (375) 27-32 235 5.3 (11.7) 4.5 (9.9) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 10.8 (425) 27-32 255 6.0 (13.3) 5.1 (11.2) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 12.1 (475) 28-33 275 6.8 (14.9) 5.7 (12.6) 85-88
0.052 in (1.3 mm) As-Welded with 100% CO2 DC+ 25 (1) 12.7 (500) 28-33 290 7.1 (15.6) 6.0 (13.3) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 3.8 (150) 23-28 200 2.9 (6.4) 2.4 (5.3) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 4.4 (175) 24-29 215 3.4 (7.5) 2.9 (6.3) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 5.1 (200) 24-29 230 3.9 (8.5) 3.3 (7.2) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 5.7 (225) 24-29 245 4.4 (9.6) 3.7 (8.1) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 6.4 (250) 25-30 255 4.8 (10.6) 4.1 (9.1) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 7.6 (300) 25-30 285 5.8 (12.7) 4.9 (10.9) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 8.3 (325) 26-31 300 6.3 (13.8) 5.4 (11.9) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 8.9 (350) 26-31 310 6.7 (14.8) 5.8 (12.8) 85-88
1/16 in (1.6 mm) As-Welded with 100% CO2 DC+ 25 (1) 10.2 (400) 27-32 340 7.7 (16.9) 6.7 (14.7) 85-88

NOTES

Note
⁽¹⁾ To estimate ESO subtract 1/4 in. (6.0 mm) from CTWD