Lincoln IronArc 7018-1 MR is an AWS A5.1/A5.1M E7018-1 SMAW stick electrode family with 70 ksi minimum tensile and DC+ or AC, all positions operation. WeldingMart stocks 4 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 IronArc 7018-1 MR is an AWS A5.1 E7018-1 H4R low-hydrogen iron-powder basic-coated moisture-resistant SMAW electrode with the -1 suffix designating improved low-temperature impact toughness (20 ft-lb at -50 F minimum). The IronArc product line is Lincoln's value-positioned alternative to Excalibur, delivering the same E7018-1 H4R AWS classification and moisture-resistant coating at a more accessible price point for everyday code-quality fabrication.
| AWS classification | AWS A5.1/A5.1M E7018-1 |
|---|---|
| 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