Lincoln Chromet 9-B9 is an AWS A5.5/A5.5M E9015-B91 SMAW stick electrode family with 90 ksi minimum tensile and DC+ only, 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.
E9015-B91 is an AWS A5.5 low-alloy low-hydrogen lime-basic-coated SMAW electrode with 90 ksi minimum tensile and a 9 Cr / 1 Mo / V-Nb-N modified alloy (Grade 91 / P91) for high-temperature creep service in supercritical and ultra-supercritical power generation. Vanadium and niobium additions stabilize the microstructure for creep strength up to 1200 deg F. DC+ in all positions; preheat 400-600 deg F and post-weld heat treatment to 1375-1425 deg F are critical.
| AWS classification | AWS A5.5/A5.5M E9015-B91 |
|---|---|
| Minimum tensile | 90 ksi minimum |
| Polarity / position | DC+ only, 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





