Lincoln Excalibur 7018-A1 MR is an AWS A5.5/A5.5M E7018-A1 SMAW stick electrode family with 70 ksi minimum tensile and DC+ or AC, all positions operation. WeldingMart stocks 5 package and diameter variants of this grade, all sharing the same AWS classification - select the diameter and package format that fits your application below.
E7018-A1 is an AWS A5.5 low-alloy low-hydrogen iron-powder basic-coated SMAW electrode with 70 ksi minimum tensile and a 0.5% molybdenum addition for elevated-temperature service. The Mo addition improves creep resistance and makes E7018-A1 the standard choice for C-Mo piping and pressure vessel welding to ASME Section I and Section VIII. Runs DC+ or AC in all positions; requires the same controlled storage and rebake discipline as E7018.
| AWS classification | AWS A5.5/A5.5M E7018-A1 |
|---|---|
| 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





