GENERAL DESCRIPTION: HTL-250 is a two component, high temperature laminating system that cures at room temperature with post cure. HTL-250 has excellent toughness, good dimensional stability with good heat distortion for tools requiring elevated temperatures.
| Ratio by Weight | 100pbw to 15pbw |
| Ratio by Volume | 5.5 to 1 |
| Pot Life at 72ºF (200 Grams Mass) | 165 minutes |
| Shore "D" 72ºF | 85 |
| Shore "D" 350ºF | 78 |
| Flexural Strength 72ºF | 38,400 |
| Flexural Strength 350ºF | 5,600 |
| Glass Transition Temperature (Tg) | 132.7ºC |
| Co-efficient of Linear Thermal Expansion | .74 x 105/ºF |
| Heat Distortion | 375ºF |
| Density Resin | 12.5 |
| Density Hardener | 8.35 |
| Density Mixed | 10.4 |
| Specific Gravity Resin | 1.50 |
| Specific Gravity Hardener | 1.00 |
| Specific Gravity Mixed | 1.25 |
| Shelf Life Resin/Hardener | 1 year |
Upon completion, the tool should be allowed to cure at ambient temperature. At that point apply an oven cure according to the following schedule (this schedule is recommended for a tool which will be exposed to an operating temperature at 350ºF):
1 hour @ 150ºF
1 hour @ 250ºF
3 hours @ 350ºF
1 hour @ 400ºF