Dual Shield Prime 71 LT H4
A seamless, copper free, cored wire designed to weld thick steel components. The diffusible hydrogen level is consistently below 4mL/100g of deposited weld metal and with the seam of the wire being laser welded this ensures no moisture pick up. The wire is not copper coated, which means there is no chance of copper flakes contaminating feed liners, torches and contact tips. Dual Shield Prime 71 LT H4 is designed to weld medium strength steels (>420 MPa, >61 ksi yield strength) and provides excellent impact toughness down to -40° C (-40° F). Dual Shield Prime 71 LT H4 is designed to be used with either CO2 (C1) or Ar/CO2 shielding gas mixture.
Typical Charpy V-Notch Properties
| as welded 100% co2 | ||||
| as welded 75% ar - 25% co2 | ||||
Typical Tensile Properties
| Condition | As Welded | As Welded |
| Shielding Gas | 75% Ar - 25% CO2 | 100% CO2 |
| Tensile Strength | 536 MPa (77.7 ksi) | 513 MPa (74.4 ksi) |
| Yield Strength | 477 MPa (69.1 ksi) | 444 MPa (64.4 ksi) |
| Elongation | 33 % | 33 % |
Deposition Data
| Current | Deposition Rate | Diameter | Voltage | Wire Feed Speed |
| 180-420 A | 1.8-7.5 kg/h (4.0-16. lb/h) | 1.6 mm (1/16 in.) | 24-38 V | 3.0-13.0 m/min (118-512 in./min) |
| 170-310 A | 2.5-6.2 kg/h (5.5-13. lb/h) | 1.2 mm (0.045 in.) | 25-35 V | 6.0-16.5 m/min (236-650 in./min) |
Classifications
| Weld Metal |
SFA/AWS A5.20 : E71T-12C-J/12M-J-H4 EN ISO 17632-B : T494T12 1C1A H5 EN ISO 17632-B : T494T12 1M21A H5 EN ISO 17632-A : T42 4 P C1 1 H5 EN ISO 17632-A : T42 4 P M21 1 H5 JIS Z 3313 : T49 4 T1-1 C/M A-H5 KS D 7104 : YFL-A503R/YFL-C503R SFA/AWS A5.20 : E71T-1C/1M/9C-J/9M-J-H4 |
Approvals
| Approvals |
ABS 4Y400SA H5 CE EN 13479 CWB E491T1-C1A4-CS2-H4 (E491T-12J-H4) CWB E491T1-M21A4-CS2-H4 (E491T-12MJ-H4) DNV IV Y40MS H5 (C1) DNV IV Y40MS H5 (M21) LR 4Y40S H5 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | C Mn |
| Diffusible Hydrogen | < 4 ml/100g |
| Shielding Gas | M21, C1 (EN ISO 14175) |
| Welding Current | DC+ |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Mn | Ni | Si | |||||||||||
| 0.04 % | 1.30 % | 0.45 % | 0.40 % | |||||||||||
Part Numbers and Accessories
ESAB EQUIPMENT WARRANTIES ARE VALID ONLY WHEN PURCHASED THROUGH AN ESAB AUTHORIZED DEALERSHIP.