HYTAC W | syntactic foam
Entry-level epoxy syntactic
HYTAC W was CMT’s first commercially-produced epoxy syntactic foam. With low thermal conductivity and CTLE associated with the syntactic structure, it proved to the thermoforming industry that felt-covered wood plugs could be resigned to the dustbin of history. While still used in low-volume or low-cost applications, W has been supplanted by other, superior levels of HYTAC materials.
Low thermal conductivity and specific heat
This translates to lower heat transfer reducing warm-up time and virtually eliminating material sticking to the plug.
Dimensionally stable
The low coefficient of thermal expansion means the plug maintains its shape over a wide temperature range.
| Color | White |
| Density (ρ) | 41-45 lb/ft3 [657 – 721 kg/m3] |
| Thermal Conductivity (k) | 0.065 BTU/hr-ft-°F [0.11 W/m°K] |
| Coefficient of Thermal Expansion(CTE) | 22 x 10-6/in/in°F [39.6 x 10-6m/m/°C] |
| Compressive Strength | 6,200psi [42.7 Mpa] |
| Service Temperature | 350°F [176 °C] |
| Flexural Toughness (ASTM D790) | 2.7psi [18.6 kPa] |
Available in rod and sheet and sizes
Applications
HYTAC-W is often used for short run or price sensitive applications, providing cost-effective, low thermal conductivity plugs for quick start up times, better material distribution, improved surface appearance and longer life than basic alternatives.
Commonly used with PE, PS and PVC.
Resources:
HYTAC W Data Sheet (PDF)
HYTAC Machining Guide (PDF)
HYTAC Turning Guide (PDF)
HYTAC Standard Size Chart (PDF)
HYTAC Relative Performance
| W | XTL | WF | WFT | FLX | FLXT | C1R | B1X | |
| Ease of Machining | 2 | 5 | 2 | 3 | 4 | 4 | 4 | 5 |
| Elimination of Machining Dust | 1 | 5 | 1 | 1 | 3 | 3 | 3 | 5 |
| Ease of Polishing | 2 | 4 | 2 | 4 | 5 | 5 | 4 | 2 |
| Resistance to Abuse | 1 | 5 | 2 | 2 | 3 | 3 | 4 | 5 |
| Fine Detail Durability | 1 | 5 | 2 | 2 | 3 | 3 | 4 | 5 |
| Even Sheet Distribution | 3 | 5 | 3 | 3 | 5 | 4 | 5 | 5 |
1 = Lowest relative performance
5 = Best relative performance