Lincoln Chromet 9-B9 in 3/32 in x 14 in, packaged as a unknown can for the applications described on the Lincoln Chromet 9-B9 family page. Same AWS A5.5/A5.5M E9015-B91 classification as every other size in this product line, packaged in this format for shop and field crews running this diameter.
| Manufacturer SKU | CH9B9-25-1 |
|---|---|
| Diameter | 3/32 in |
| Length | 14 in |
| Package | unknown can |
| Net weight | unknown |
| Approx. rods per package | ~470 rods |
| Recommended amperage (this diameter) | 70-110 A |
| AWS classification | AWS A5.5/A5.5M E9015-B91 |
- Brand-authorized distributor - factory-fresh stock, full warranty pass-through
- Stocked in our US warehouse; ships within 1 business day
- Same AWS A5.5/A5.5M E9015-B91 classification as every other size in the Lincoln Chromet 9-B9 line
- 30-day returns on unopened cartons
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.
Is this the same electrode as the parent Lincoln Chromet 9-B9 grade, just in a different package?
Yes. SKU CH9B9-25-1 is the same AWS A5.5/A5.5M E9015-B91 classification as every other size in the Lincoln Chromet 9-B9 family. The only difference is diameter (3/32 in) and package format (unknown can). Polarity, position, and tensile properties are identical to the parent grade.
How many rods are in this unknown can?
Approximately ~470 rods. Exact count varies with manufacturing tolerance but a unknown can of 3/32 in Lincoln Chromet 9-B9 typically contains in this range.
What is the shelf life if I do not use them all?
Sealed cans have an indefinite shelf life when stored unopened in a dry environment. Once opened, low-hydrogen rods exposed beyond 4 hours of atmospheric humidity should be rebaked at 500-800 F for 1-2 hours or stored in a heated rod oven at 250-300 F to restore full code performance.
What diameter should I use for common applications?
3/32 in is well-suited for root passes, thin material, and out-of-position work. Heavier base metal and higher deposition typically calls for one diameter up; thinner sheet and root passes go one diameter down. See the parent grade page for full diameter-to-amperage guidance.
Can I mix this size with other diameters on the same job?
Yes, provided your procedure qualification (WPS) covers the diameter range. Many shops use one diameter for root, one for fill, and one for cap. All sizes within Lincoln Chromet 9-B9 share identical mechanical properties (AWS A5.5/A5.5M E9015-B91) so weld metal chemistry is consistent across passes.
Do I need to rebake these after the can is opened?
Yes for code-quality work. Per AWS D1.1 and most pressure-vessel codes, low-hydrogen electrodes exposed to atmosphere beyond 4 hours must be rebaked at 500-800 F for 1-2 hours or stored in a heated rod oven at 250-300 F to restore full code performance.
Does this size require a special holder or stinger?
Use an electrode holder rated for the amperage range above (70-110 A). Most general-purpose stinger holders (e.g. 300-500 A class) handle 3/32 in Lincoln Chromet 9-B9 without issue. For sustained high-amperage runs on larger diameters, a 500 A or higher holder is recommended.
Is this Buy America compliant?
This specific SKU is not the Buy America variant. Lincoln Chromet 9-B9 may be available in a Buy America compliant version - see the parent grade page for all available compliance variants.