| Typical Properties | Test Method | H320 | H330 |
| Maximum Service Temperature | 450 F | 550F | |
| Compresive Strength PSI, Condition A | D-695 | 42,000 | 44,000 |
| @300 Degree F | 23,400 | 31,700 | |
| @400 Degree F | 16,100 | 30,600 | |
| @500 Degree F | N/A | 26,200 | |
| Impact Strength Izod Ft. Lbs/in. notch | D-256 | 10 | 13 |
| Flexural Strength, PSI | D-790 | 22,000 | 22,800 |
| Moisture Absorption, % @ 3/8″ Sanded | D-570 | .25 | .25 |
| Co-Efficient of Thermal Expansion In/In/o C | D-696 | 2.90 x 10-5 | 2.84 x 10-5 |
| Youngs(Tensile) Modulus | D-638 | 1.6 x 10 | 1.6 x 10 |
| Poisson Ratio | E-132 | .332 | .332 |
| Color | Brown | Light Gray |
| Insulation Material | Compression Strength PSI | Moisture Absorption % | K Factor | Max Operating Temp F | Impact Strength |
| Concrete Asbestos | 14,000 | 22.00 | 4.50 | 600 | 0.60 |
| Calcium Silicate | 2,400 | 85.00 | 0.88 | 1,200 | 0.25 |
| Thermalate H320 | 42,000 | 0.25 | 1.90 | 550 | 13.00 |
| Thermalate H330 | 44,000 | 0.25 | 1.85 | 550 | 9.00 |
| G-3 (Reinforced Phenolic) | 50,000 | 1.50 | 2.15 | 350 | 6.50 |
| G-11 (Reinforced Epoxy) | 60,000 | 0.10 | 2.03 | 320 | 7.00 |
| G-7 (Reinforced Silicone) | 45,000 | 0.15 | 2.20 | 460 | 8.50 |
| Mica | 60,000 | 2.77 | 0.87 | 1,000 | – |
