The following is a list of Hapco materials that have been certified as UL 94 V-0 or V-1 by the Underwriter's Laboratory Inc. For more information about these ratings and the testing procedure, please click here.
| Material | Rating |
|---|---|
| DI-PAK™ E-4565FR | V-0 |
| DI-PAK™ R-4912 | V-0 |
| Hapflex™ 565FR | V-0 |
| Hapflex™ 671FR | V-1 |
| Ultralloy™ 304 | V-0 |
| Ultralloy™ 305 | V-0 |
| Ultralloy™ 306 | V-0 |
| Ultralloy™ 307 | V-0 |
| Ultralloy™ 33(yy) | V-0 |
| Ultralloy™ 910 | V-0 |
| Ultralloy™ 911 | V-0 |
| Ultralloy™ 912 | V-0 |
(yy) - Represents a two digit number, 02 through 21, inclusive.