Coreweld Ultra is a low fume, metal-cored wire with high deposition efficiency, excellent welder appeal and minimal clean up.
Coreweld Ultra is Esab's premiere low fume, metal cored wire. This wire produces 40% less fume than the conventional metal cored products. The use of higher argon shielding gas further reduces fume, spatter and slag islands. The higher deposition efficiency and improved welder appeal minimizes post weld clean-up.Coreweld Ultra was developed for carbon steels having tensile strength up to 70 ksi (485 MPa). This metal cored wire is intended for single or multi-pass welding in the flat and horizontal positions.

| As Welded 75% Ar / 25% CO2 | |
|---|---|
| Yield Strength | 63 ksi, 435 MPa |
| Tensile Strength | 72 ksi, 495 MPa |
| Reduction in Area | 68 % |
| Elongation in 2" | 29 % |
| As Welded 92% Ar / 8% CO2 | |
| Yield Strength | 65 ksi, 440 MPa |
| Tensile Strength | 75 ksi, 510 MPa |
| Reduction in Area | 66 % |
| Elongation in 2" | 29 % |
| Typical Charpy V-Notch Impact Properties | |
| Testing Temperature 0ºF (-18ºC) | |
| As Welded 75% Ar / 25% CO2 | 90 ft.-lbs., 120 J |
| As Welded 92% Ar / 8% CO2 | 100 ft.-lbs., 136 J |
| Testing Temperature -20ºF (-29ºC) | |
| As Welded 75% Ar / 25% CO2 | 75 ft.-lbs., 102 J |
| As Welded 92% Ar / 8% CO2 | 80 ft.-lbs., 108 J |
| Testing Temperature -40ºF (-40ºC) | |
| As Welded 75% Ar / 25% CO2 | 60 ft.-lbs., 81 J |
| As Welded 92% Ar / 8% CO2 | 70 ft.-lbs., 95 J |
| Typical Undiluted Weld Metal Analysis | |
| 75% Ar / 25% CO2 | |
| C | 0.03 % |
| Mn | 1.5 % |
| Si | 0.5 % |
| P | 0.015 % |
| S | 0.017 % |
| 92% Ar / 8% CO2 | |
| C | 0.03 % |
| Mn | 1.6 % |
| Si | 0.6 % |
| P | 0.015 % |
| S | 0.017 % |
| Diameter | Amps | Volts | Wire Feed Speed | Deposition Rate | Efficiency |
|---|---|---|---|---|---|
| .035 in, 0.9 mm | 150 A | 25 V | 320 ipm, 813 cm/min | 4.4 lbs./hr., 1.2 kg./hr. | 92 % |
| 200 A | 27 V | 472 ipm, 1199 cm/min | 6.5 lbs./hr., 2.95 kg./hr. | 92 % | |
| 250 A | 29 V | 680 ipm, 1727 cm/min | 9.4 lbs./hr., 4.26 kg./hr. | 92 % | |
| .045 in, 1.2 mm | 250 A | 28 V | 330 ipm, 838 cm/min | 8.0 lbs./hr., 3.63 kg./hr. | 90 % |
| 275 A | 30 V | 430 ipm, 1092 cm/min | 11.1 lbs./hr., 5.03 kg./hr. | 94 % | |
| 300 A | 32 V | 464 ipm, 1179 cm/min | 11.6 lbs./hr., 5.26 kg./hr. | 94 % | |
| 350 A | 32 V | 512 ipm, 1300 cm/min | 12.7 lbs./hr., 5.76 kg./hr. | 96 % | |
| .052 in, 1.4 mm | 275 A | 29 V | 262 ipm, 665 cm/min | 8.0 lbs./hr., 3.63 kg./hr. | 92 % |
| 300 A | 29 V | 312 ipm, 792 cm/min | 9.6 lbs./hr., 4.35 kg./hr. | 93 % | |
| 325 A | 30 V | 328 ipm, 833 cm/min | 10.1 lbs./hr., 4.58 kg./hr. | 93 % | |
| 1/16 in, 1.6 mm | 300 A | 30 V | 181 ipm, 460 cm/min | 8.6 lbs./hr., 3.90 kg./hr. | 89 % |
| 350 A | 30 V | 241 ipm, 612 cm/min | 11.9 lbs./hr., 5.40 kg./hr. | 94 % | |
| 400 A | 32 V | 293 ipm, 744 cm/min | 14.6 lbs./hr., 6.62 kg./hr. | 94 % | |
| 450 A | 34 V | 333 ipm, 846 cm/min | 16.2 lbs./hr., 7.35 kg./hr. | 94 % | |
| 5/64 in, 2.0 mm | 350 A | 27 V | 160 ipm, 406 cm/min | 11.6 lbs./hr., 5.26 kg./hr. | 94 % |
| 400 A | 28 V | 185 ipm, 470 cm/min | 13.2 lbs./hr., 5.99 kg./hr. | 95 % | |
| 450 A | 28 V | 210 ipm, 533 cm/min | 15.8 lbs./hr., 7.17 kg./hr. | 97 % | |
| 500 A | 29 V | 280 ipm, 711 cm/min | 20.4 lbs./hr., 9.25 kg./hr. | 97 % | |
| 3/32 in, 2.4 mm | 400 A | 31 V | 115 ipm, 292 cm/min | 11.5 lbs./hr., 5.22 kg./hr. | 95 % |
| 450 A | 31 V | 138 ipm, 350 cm/min | 14.5 lbs./hr., 6.58 kg./hr. | 97 % | |
| 500 A | 32 V | 155 ipm, 394 cm/min | 16.5 lbs./hr., 7.48 kg./hr. | 97 % | |
| 550 A | 32 V | 197 ipm, 500 cm/min | 21.0 lbs./hr., 9.53 kg./hr. | 98 % |
75-92% Argon/25-8% CO2