Harris Alloy 26 Aluminum is an AWS A5.3/A5.3M E4043 SMAW stick electrode family with 17 ksi minimum (as-welded aluminum) tensile and DC+ only, flat position only 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.
E4043 is an AWS A5.3 aluminum SMAW electrode with a ~5% silicon aluminum core and a moisture-resistant flux coating, designed for stick welding of 1100, 3003, 5052, and 6061 aluminum alloys and aluminum castings. The Si addition lowers melt temperature and improves fluidity. Aluminum SMAW has largely been displaced by GMAW and GTAW for production work but remains valuable for field repair where shielding gas is not available. Runs DC+ only in the flat position; preheat 300-400 deg F is required on thicker sections to avoid lack of fusion.
| AWS classification | AWS A5.3/A5.3M E4043 |
|---|---|
| Minimum tensile | 17 ksi minimum (as-welded aluminum) |
| Polarity / position | DC+ only, flat position only |
| 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