Acetal Copolymer
Overview
What is the Material: Acetal Copolymer Unfilled is a semi-crystalline material and it is the copolymer version of acetal.
Key Material Features: This material is beneficial in applications requiring mechanical strength, rigidity, wear resistance, low moisture absorption, and dimensional stability.
Other Considerations: It typically is lower in cost, easier to machine, and has less center-line porosity than acetal homopolymer. Nylon materials typically perform better than acetal materials in abrasive wear applications.
Physical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Chemical Designation | (POM-C) Polyoxymethylene Copolymer | |
| Trade Names (®, ™) | Sustarin C, Acetron, Tecaform, Unital, ZL, Pomalux | |
| Color | White, Black, Blue, Various colors | |
| Density (g/cm^3) | 1.41 | D 792 |
Mechanical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Modulus of Elasticity (Tensile Test) (psi) | 330000 | D 638 |
| Tensile Strength at Yield (psi) | 9300 | D 638 |
| Tensile Strength at Break (psi) | 9700 | D 638 |
| Elongation at Yield (%) | 9 | D 638 |
| Elongation at Break (%) | 40 | D 638 |
| Flexural Strength (psi) | 13000 | D 790 |
| Modulus of Elasticity (Flexural Test) (psi) | 400000 | D 790 |
| Compression Strength: 10% Strain (psi) | 12000 | D 695 |
| Compression Strength: 1% Strain (psi) | 2500 | D 695 |
| Compression Modulus (psi) | 250000 | D 695 |
| Impact Strength (Izod) (ft-lbs/in) | 1 | D 256 |
| Hardness (R) | 120 | D 785 |
| Hardness (M) | 86 | D 785 |
| Coefficient of Friction (Kinetic, 40 psi, 50 fpm) | 0.21 | D 3702 |
| Wear (K) Factor (in^3-min/ft-lbs-hr) (Against Steel, 40 psi, 50 fpm) | 6.50E-9 | D 3702 |
Thermal
| Property | Value | Typical ASTM Test |
|---|---|---|
| Melting Point (°F) | 329 | D 3418 |
| Deflection Temperature (°F) (66 psi) | 316 | D 648 |
| Deflection Temperature (°F) (264 psi) | 230 | D 648 |
| Service Temperature Continuous (°F) | 195 | |
| Service Temperature Intermittent (°F) | 285 | |
| Thermal Expansion (CLTE) (in/in/°F) | 4.70E-5 | D 696 |
Electrical
| Property | Value | Typical ASTM Test |
|---|---|---|
| Volume Resistivity (Ω*cm) | 1.00E14 | D 257 |
| Dielectric Strength (V/mil) | 500 | D 149 |
| Dissipation Factor (60 Hz) | 0.001 | D 150 |
| Dissipation Factor (1MHz) | 0.005 | D 150 |
| Dielectric Constant (60 Hz and 50% RH) | 3.7 | D 150 |
Other
| Property | Value | Typical ASTM Test |
|---|---|---|
| Moisture Absorption (%) (24 Hours) | 0.18 | D 570 |
| Moisture Absorption (%) (Saturated) | 0.8 | D 570 |
| Flammability | HB |
The data stated are typical values intended for reference and comparison purposes only. The data should not be used as a basis for design specifications or quality control. The information is provided as a guide to the best of our knowledge and given without obligation or liability. Testing under individual application circumstances is recommended.