70TR
Alloy Type: A5.20, CARBON STEEL Flux Cored Arc Welding Electrodes
Description:
70TR is a carbon steel, flux cored, gas shielded electrode for single and multiple pass welding. The product is designed to produce perfectly flat horizontal, equal legged fillets with no double bead effect. It can be used with either 100% CO2 or 75-80% Ar/Balance CO2 shielding gas. Beads can be “stacked” in horizontal fillet with no drooping or roll on the bead surface. Ideal for those structural welds or general fabrications were bead geometry and cosmetics are of primary importance.
Welding positions are flat and horizontal fillets and flat grooves
Classifications:
- E70T-1C-H8, E70T-1M-H8, E70T-9C-H8, E70T-9M-H8 per AWS A5.20, ASME SFA 5.20
- E70T1-C1A2-CS1-H8, E70T1-M21A2-CS1-H8 per AWS A5.36, ASME SFA5.36
- ABS E70T-1C, per AWS A5.20, SFA 5.20.
- CWB E492T-9-H8
- AWS D1.8 (Seismic) approval CO2 and 75-80% Ar/balance CO2 for 3/32”
Typical Mechanical Properties:
| CO2 | 75-80% Ar/balance CO2 | |
| Ultimate Tensile Strength (psi) | 88,700 | 94,100 |
| Yield Strength (psi) | 74,400 | 81,100 |
| Percent Elongation | 24 | 24 |
| CVN (ft-lbf) @ 0oF | ||
| CVN (ft-lbf) @ -20oF | 31 | 30 |
Typical Deposit Composition (wt%):
| Shielding Gas | C | Mn | Si | P | S |
| 100 CO2 | .06 | 1.56 | .58 | .006 | .010 |
| 75% Ar/Balance CO2 | .06 | 1.68 | .70 | .007 | .009 |
Recommended Welding Parameters:
| Optimum | Range | ||||||
| Diam. | Amps | Volts | WFS | Amps (DCEP) | Volts | WFS (in/min) | ESO |
| 3/32” | 425 | 29 | 180 | 300-500 | 26/34 | 110-240 | 1-1 ¼” |
| 5/64” | 350 | 29 | 250 | 280-430 | 26-33 | 140-300 | 1-1 ¼” |
| 1/16” | 300 | 27 | 320 | 150-350 | 24/34 | 130-385 | 1-1 ¼” |
| .045 | 250 | 28 | 450 | 130-300 | 21/32 | 175-570 | ½”-1” |
Gas Flow Rate: 40-55 cfh