Diameters / Packaging

Diameters	(4) 15 lb Plastic Spool	33 lb Spool	33 lb Spool Buy America	50 lb Spool	500 lb Accu-Trak® Drum
0.045 in (1.1 mm)		ED031672			ED031681
0.052 in (1.3 mm)	ED031895	ED031673	ED034418
1/16 in (1.6 mm)		ED031674	ED034419	ED031840	ED031799

UltraCore® 712C

Flux-Cored Gas-Shielded (FCAW-G) | ED034418

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.

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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

Disclaimers

Warning -

Cancer and Reproductive Harm -

www.P65Warnings.ca.gov

Service Information

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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

See test result disclaimer

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