GENERAL DESCRIPTION: HSC-905 is a high temperature two component epoxy surface coat. This surface coat has excellent chemical resistance along with resistance to extremely high temperatures.
| Ratio by Weight | 100pbw to 20pbw |
| Ratio by Volume | 5 to 1 |
| Pot Life at 72ºF (200 Gram Mass) | 60 minutes |
| Cure Time | 24 hours then post cure |
| Shore "D" Room Temperature | 85-88 |
| Shore "D" 350ºF | 80 |
| Flexural Strength at 72ºF | 55,000 |
| Flexural Modulus at 72ºF | 6.25 x 106 |
| Flexural Strength at 350ºF | 36,000 |
| Flexural Modulus at 350ºF | 4.10 x 106 |
| Heat Distortion | 450ºF |
| Density Resin | 9.6 |
| Density Hardener | 8.3 |
| Density Mixed | 9.4 |
| Specific Gravity Resin | 1.17 |
| Specific Gravity Hardener | 1.00 |
| Specific Gravity Mixed | 1.09 |
| Shelf Life Resin/Hardener | 1 year |
| Co-efficient of Linear Thermal Expansion | 3.4 x 10-6/ºC |
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 of 350ºF.)
- 1 hour @ 150ºF
- 1 hour @ 250ºF
- 3 hours @ 350ºF
- 1 hour @ 400ºF
After the oven has cooled to ambient temperature (77 degrees), remove the tool. (The final temperature of the post curing cycle should be 50 degrees Fahrenheit above the use temperature of the tool.)
*If the tool is used at 400 degrees Fahrenheit the final post cure temperature is 450 degrees Fahrenheit for 1 hour.