What is Lincoln UltraCore 91K2M-H Plus wire used for?

Lincoln UltraCore 91K2M-H Plus is a gas-shielded flux-cored wire for welding high-strength low-alloy steel requiring 90 ksi minimum tensile strength with low hydrogen content, used in offshore, structural, and shipbuilding applications.

What shielding gas does Lincoln UltraCore 91K2M-H Plus require?

Lincoln UltraCore 91K2M-H Plus is an FCAW-G wire requiring 75% Ar/25% CO2 shielding gas per its AWS classification.

What is the AWS classification of Lincoln UltraCore 91K2M-H Plus?

Lincoln UltraCore 91K2M-H Plus meets AWS A5.29 E91T1-K2M H4 classification, providing 90 ksi minimum tensile strength with maximum 4 ml/100g diffusible hydrogen.

What diameter is Lincoln UltraCore 91K2M-H Plus available in?

Lincoln UltraCore 91K2M-H Plus is available in .045 and 1/16 inch diameters.

How should I store Lincoln UltraCore 91K2M-H Plus wire?

Store in original packaging in a dry, temperature-controlled location. This is a low-hydrogen wire; reseal with desiccant between uses and do not use wire exposed to high humidity.

Lincoln ED035378 UltraCore 91K2M-H Plus Flux-Cored FCAW-G WeldingWelding Wire, 0.045 in, 33 lb Spool

SKU: ED035378

$230.47 ~~$282.48~~

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UltraCore® 91K2M-H Plus from Lincoln Electric is capable of superior toughness at-60°F

AWS / Classification: E91T1-K2M-JH4, E91T1-M21A6-K2-H4

Overview

Innovative design capable of superior toughness at-60°F

Typical Applications

Offshore drilling rigs
Ship building
Low temperature storage tanks
Construction

Welding Positions

Shielding Gas

Mixed Shielding Gas

Specifications

Feature	Value
CONFORMANCES	SPECIFICATIONCLASSIFICATION
AWS	AWS A5.29 E91T1-K2M-JH4
AWS	AWS A5.36 E91T1-M21A6-K2-H4, E91T1-M21P4-K2-H4
ABS	ABS - Part 2 4YQ500SA H5
CWB	CSA W48 E621T1-M21A5-K2-H4 (E91T1-M21A6-K2-H4)
DNV-GL	DNV - 2.9 IV Y50MS H5
LR	LR - Chapter 11 4Y50S H5
Classification	Shielding GasPolarityYield Strength @ 0.2% Offset, MPa (ksi)Tensile Strength, MPa (ksi)Elongation, %Charpy V-Notch, J (ft-lbs) @ -40°C (-40°F)Charpy V-Notch, J (ft-lbs) @ -50°C (-60°F)
E91T1-K2M-JH4 Requirement	75-80% Ar, balance CO2DC+540 (78) min.620-760 (90-110)17 min.
E91T1-M21A6-K2-H4 Requirement	M21-ArCDC+540 (78) min.620-760 (90-110)17 min.27 (20) min.
E91T1-M21P4-K2-H4 Requirement	M21-ArCDC+540 (78) min.620-760 (90-110)17 min.27 (20) min.
Typical Result, As-welded	75% Ar, 25% CO2DC+570-710 (82-102)630-750 (91-109)21-26105 (77)37-121 (27-89)
Typical Result, 1 hour @ 620°C (1150°F)	75% Ar, 25% CO2DC+570-630 (82-91)640-690 (94-101)23-2551-124 (38-92)
Classification	Shielding GasPolarity%B%C%Cr%Mn%Mo%Ni%P%S%Si%VDiffusible Hydrogen, mL/100g Weld Metal
E91T1-K2M-JH4 Requirement	75-80% Ar, balance CO2DC+0.15 max.0.15 max.0.50 - 1.750.35 max.1.00 - 2.000.030 max.0.030 max.0.80 max.0.05 max.4 max.
E91T1-M21A6-K2-H4 Requirement	M21-ArCDC+0.15 max.0.15 max.0.50 - 1.750.35 max.1.00 - 2.000.030 max.0.030 max.0.80 max.0.05 max.4 max.
E91T1-M21P4-K2-H4 Requirement	M21-ArCDC+0.15 max.0.15 max.0.50 - 1.750.35 max.1.00 - 2.000.030 max.0.030 max.0.80 max.0.05 max.4 max.
Typical Result	75% Ar, 25% CO2DC+0.004-0.0060.04-0.060.06 max.1.45-1.710.26 max.1.39-1.610.015 max.0.015 max.0.29-0.380.005 max.0.7-3
Diameter	Shielding GasPolarityCTWD, mm (in.)⁽¹⁾Wire Feed Speed, m/min (in/min)Voltage, voltsApprox. Current, ampsMelt-off Rate, kg/hr (lb/hr)Deposition Rate, kg/hr (lb/hr)Efficiency, %
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)4.4 (175)25 - 281301.9 (4.1)1.7 (3.7)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)6.4 (250)27 - 301702.6 (5.8)2.4 (5.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)7.6 (300)28 - 311953.2 (7.0)2.8 (6.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)8.9 (350)29 - 322203.7 (8.1)3.3 (7.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+25 (1)10.2 (400)29 - 322254.2 (9.2)3.7 (8.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+25 (1)11.4 (450)30 - 332454.7 (10.4)4.2 (9.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+25 (1)12.7 (500)30 - 332655.2 (11.5)4.6 (10.2)89-90
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)3.8 (150)26 - 291602.1 (4.6)1.7 (3.8)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)4.4 (175)26 - 291802.4 (5.4)2.0 (4.5)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)5.1 (200)27 - 302002.8 (6.2)2.3 (5.1)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)5.7 (225)27 - 302203.2 (7.0)2.6 (5.8)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)7.0 (275)28 - 312553.9 (8.5)3.2 (7.1)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+25 (1)7.6 (300)28 - 312304.2 (9.3)3.5 (7.8)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+25 (1)8.3 (325)28 - 312454.6 (10.1)3.8 (8.4)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+25 (1)8.9 (350)29 - 322554.9 (10.9)4.1 (9.1)82-84
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)3.8 (150)26 - 292052.9 (6.3)2.4 (5.2)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)4.4 (175)27 - 302303.4 (7.4)2.8 (6.2)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)5.1 (200)27 - 302503.8 (8.4)3.2 (7.1)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)5.7 (225)28 - 312704.3 (9.5)3.6 (8.0)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)7.0 (275)29 - 323055.3 (11.6)4.4 (9.8)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+25 (1)7.6 (300)29 - 323055.8 (12.7)4.9 (10.7)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+25 (1)8.3 (325)29 - 323206.2 (13.7)5.3 (11.6)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+25 (1)8.9 (350)29 - 323356.7 (14.8)5.7 (12.6)83-85
Note
⁽¹⁾ To estimate ESO subtract 1/4 in. (6.0 mm) from CTWD
LECO Diameter	0.045 in (1.1 mm)
LECO Package	33 lb Spool
Diameter (in)	0.045

Downloads

UltraCore 91K2M-H Plus Product Info

Includes

(1) 33 lb Spool

Reviews

Q&A

Product Overview

Innovative design capable of superior toughness at-60°F

Typical Applications

Offshore drilling rigs
Ship building
Low temperature storage tanks
Construction

Welding Positions

Shielding Gas

Mixed Shielding Gas

Specifications

Feature	Value
CONFORMANCES	SPECIFICATIONCLASSIFICATION
AWS	AWS A5.29 E91T1-K2M-JH4
AWS	AWS A5.36 E91T1-M21A6-K2-H4, E91T1-M21P4-K2-H4
ABS	ABS - Part 2 4YQ500SA H5
CWB	CSA W48 E621T1-M21A5-K2-H4 (E91T1-M21A6-K2-H4)
DNV-GL	DNV - 2.9 IV Y50MS H5
LR	LR - Chapter 11 4Y50S H5
Classification	Shielding GasPolarityYield Strength @ 0.2% Offset, MPa (ksi)Tensile Strength, MPa (ksi)Elongation, %Charpy V-Notch, J (ft-lbs) @ -40°C (-40°F)Charpy V-Notch, J (ft-lbs) @ -50°C (-60°F)
E91T1-K2M-JH4 Requirement	75-80% Ar, balance CO2DC+540 (78) min.620-760 (90-110)17 min.
E91T1-M21A6-K2-H4 Requirement	M21-ArCDC+540 (78) min.620-760 (90-110)17 min.27 (20) min.
E91T1-M21P4-K2-H4 Requirement	M21-ArCDC+540 (78) min.620-760 (90-110)17 min.27 (20) min.
Typical Result, As-welded	75% Ar, 25% CO2DC+570-710 (82-102)630-750 (91-109)21-26105 (77)37-121 (27-89)
Typical Result, 1 hour @ 620°C (1150°F)	75% Ar, 25% CO2DC+570-630 (82-91)640-690 (94-101)23-2551-124 (38-92)
Classification	Shielding GasPolarity%B%C%Cr%Mn%Mo%Ni%P%S%Si%VDiffusible Hydrogen, mL/100g Weld Metal
E91T1-K2M-JH4 Requirement	75-80% Ar, balance CO2DC+0.15 max.0.15 max.0.50 - 1.750.35 max.1.00 - 2.000.030 max.0.030 max.0.80 max.0.05 max.4 max.
E91T1-M21A6-K2-H4 Requirement	M21-ArCDC+0.15 max.0.15 max.0.50 - 1.750.35 max.1.00 - 2.000.030 max.0.030 max.0.80 max.0.05 max.4 max.
E91T1-M21P4-K2-H4 Requirement	M21-ArCDC+0.15 max.0.15 max.0.50 - 1.750.35 max.1.00 - 2.000.030 max.0.030 max.0.80 max.0.05 max.4 max.
Typical Result	75% Ar, 25% CO2DC+0.004-0.0060.04-0.060.06 max.1.45-1.710.26 max.1.39-1.610.015 max.0.015 max.0.29-0.380.005 max.0.7-3
Diameter	Shielding GasPolarityCTWD, mm (in.)⁽¹⁾Wire Feed Speed, m/min (in/min)Voltage, voltsApprox. Current, ampsMelt-off Rate, kg/hr (lb/hr)Deposition Rate, kg/hr (lb/hr)Efficiency, %
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)4.4 (175)25 - 281301.9 (4.1)1.7 (3.7)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)6.4 (250)27 - 301702.6 (5.8)2.4 (5.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)7.6 (300)28 - 311953.2 (7.0)2.8 (6.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+19 (3/4)8.9 (350)29 - 322203.7 (8.1)3.3 (7.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+25 (1)10.2 (400)29 - 322254.2 (9.2)3.7 (8.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+25 (1)11.4 (450)30 - 332454.7 (10.4)4.2 (9.2)89-90
0.045 in (1.1 mm)	75% Ar, 25% CO2DC+25 (1)12.7 (500)30 - 332655.2 (11.5)4.6 (10.2)89-90
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)3.8 (150)26 - 291602.1 (4.6)1.7 (3.8)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)4.4 (175)26 - 291802.4 (5.4)2.0 (4.5)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)5.1 (200)27 - 302002.8 (6.2)2.3 (5.1)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)5.7 (225)27 - 302203.2 (7.0)2.6 (5.8)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+19 (3/4)7.0 (275)28 - 312553.9 (8.5)3.2 (7.1)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+25 (1)7.6 (300)28 - 312304.2 (9.3)3.5 (7.8)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+25 (1)8.3 (325)28 - 312454.6 (10.1)3.8 (8.4)82-84
0.052 in (1.3 mm)	75% Ar, 25% CO2DC+25 (1)8.9 (350)29 - 322554.9 (10.9)4.1 (9.1)82-84
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)3.8 (150)26 - 292052.9 (6.3)2.4 (5.2)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)4.4 (175)27 - 302303.4 (7.4)2.8 (6.2)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)5.1 (200)27 - 302503.8 (8.4)3.2 (7.1)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)5.7 (225)28 - 312704.3 (9.5)3.6 (8.0)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+19 (3/4)7.0 (275)29 - 323055.3 (11.6)4.4 (9.8)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+25 (1)7.6 (300)29 - 323055.8 (12.7)4.9 (10.7)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+25 (1)8.3 (325)29 - 323206.2 (13.7)5.3 (11.6)83-85
1/16 in (1.6 mm)	75% Ar, 25% CO2DC+25 (1)8.9 (350)29 - 323356.7 (14.8)5.7 (12.6)83-85
Note
⁽¹⁾ To estimate ESO subtract 1/4 in. (6.0 mm) from CTWD
LECO Diameter	0.045 in (1.1 mm)
LECO Package	33 lb Spool
Diameter (in)	0.045

Lincoln ED035378 UltraCore 91K2M-H Plus Flux-Cored FCAW-G WeldingWelding Wire, 0.045 in, 33 lb Spool

Product Overview

Specifications

Downloads

Product Reviews

Questions & Answers