Lincoln 7018-AC is an AWS A5.1/A5.1M E7018 SMAW stick electrode family with 70 ksi minimum tensile and DC+ or AC, all positions operation. WeldingMart stocks 2 package and diameter variants of this grade, all sharing the same AWS classification - select the diameter and package format that fits your application below.
Lincoln 7018-AC is an AWS A5.1 E7018 H8 low-hydrogen iron-powder basic-coated SMAW electrode engineered specifically to run on AC welding machines, including low open-circuit-voltage (low-OCV) farm and shop buzzboxes that struggle with standard E7018. Stable arc on AC delivers the same 70 ksi minimum tensile, all-position low-hydrogen weld metal as DC+ E7018 - the practical pick for code-quality work on AC-only machines or where DC capacity is limited.
| AWS classification | AWS A5.1/A5.1M E7018 |
|---|---|
| Minimum tensile | 70 ksi minimum |
| Polarity / position | DC+ or AC, all positions |
| Available diameters | 3/32 in through 1/4 in (varies by package) |
| Package formats | see size variants below |
- Brand-authorized distributor - factory-fresh stock, full warranty pass-through
- Multiple diameter and package variants in stock - select the SKU below that matches your job
- US warehouse fulfillment, 1 business day ship time
- 30-day returns on unopened cartons


