Nickel Low-Temp vs Standard Gas-Shielded Flux-Core
E81T1-Ni1 for sub-zero toughness vs E71T-1 for standard structural. Choose based on service temperature requirements.
Which One Should You Use?
Pick E81T1-Ni1 if:
Runs on DCEP, 130-380A range. E81T1-Ni1 full amperage chart
Pick E71T-1 if:
Runs on DCEP, 150-500A range. E71T-1 full amperage chart
Key Differences
| Attribute | E81T1-Ni1 | E71T-1 |
|---|---|---|
| Tensile Strength | 80,000 psi | 70,000 psi |
| Impact Test | -40F (-40C) | -20F or 0F (varies) |
| Nickel Content | ~1% Ni for toughness | None |
| Cost | 2-3x more expensive | Standard pricing |
| Base Metal Match | HSLA, low-temp service steels | A36, A572, A992 structural |
| Shielding Gas | 75/25 Ar/CO2 or 100% CO2 | 75/25 Ar/CO2 or 100% CO2 |
| Polarity | DCEP | DCEP |
Settings at a Glance
Machine settings and operating characteristics side by side. For full amperage charts, see the individual electrode pages.
| Setting | E81T1-Ni1 | E71T-1 |
|---|---|---|
| Polarity | DCEP | DCEP |
| Positions | flat, horizontal, vertical-up, overhead | flat, horizontal, vertical-up, overhead |
| Penetration | medium-deep | medium-deep |
| Coating | gas-shielded flux core | tubular flux-core (gas-shielded) |
| Amps at 1/16" | 175-380A | 200-400A |
How E81T1-Ni1 and E71T-1 Work Together
If the structure or vessel will never see service below 0F, E71T-1 is the correct and cheaper choice. If the application involves arctic service, offshore platforms, LNG supports, or any design temperature below -20F, E81T1-Ni1 is required. The 1% nickel is what provides the low-temperature toughness. Both are gas-shielded with similar welding characteristics.
Common Mistake With Nickel Low-Temp
Specifying E81T1-Ni1 for ambient temperature applications because stronger sounds better. The 80 ksi tensile is overkill for A36 steel and the nickel content adds significant cost. Use E71T-1 for standard structural work at normal temperatures.
Practical Differences
| Factor | E81T1-Ni1 | E71T-1 |
|---|---|---|
| Common Brands | Outershield 81Ni1-H, FabCO 81Ni1 | Outershield 71M, FabCO 711 |
Where to Buy
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E81T1-Ni1 vs E71T-1: Common Questions
Which is better, E81T1-Ni1 or E71T-1?
Different rods for different jobs. Key differences: Tensile Strength: E81T1-Ni1 has 80,000 psi, while E71T-1 has 70,000 psi. Impact Test: E81T1-Ni1 has -40f (-40c), while E71T-1 has -20f or 0f (varies). Nickel Content: E81T1-Ni1 has ~1% ni for toughness, while E71T-1 has none. Match the rod to the work, not the other way around.
Can I substitute E81T1-Ni1 for E71T-1?
Not a straight swap. Coating chemistry is different (gas-shielded flux core vs tubular flux-core (gas-shielded)), so the arc and slag behave differently.
Can I use both E81T1-Ni1 and E71T-1 on the same joint?
If the structure or vessel will never see service below 0F, E71T-1 is the correct and cheaper choice. If the application involves arctic service, offshore platforms, LNG supports, or any design temperature below -20F, E81T1-Ni1 is required. The 1% nickel is what provides the low-temperature toughness. Both are gas-shielded with similar welding characteristics.
Reference data only. Verify all settings against manufacturer documentation and the applicable welding code before use. Amperage ranges are starting points that vary by position, fit-up, and material. Welding involves serious injury risks including burns, electric shock, fume exposure, and fire. This site does not replace proper training, certification, or employer safety procedures. See full terms of use.
Data sourced from AWS A5.29/A5.29M, AWS A5.20/A5.20M.