Made of homopolymer thermoplastic resin, our Delrin® balls are distinguished by their lightness and excellent mechanical characteristics. They are particularly recommended for their resistance to corrosion, wear and abrasion, while offering electrical insulation properties and self-lubricated performance. With 40 years of expertise, Marteau-Lemarie ensures a stock available in France and personalized advice for your projects.
Physical characteristics of delrin® ball – POM
| Ownership | Value | Unit |
|---|---|---|
| Density | 1.37 | g/cm3 |
| Young Module | 2900 | MPa |
| Thermal expansion coefficient | 96 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 0.25 | W/m·K |
| Volume resistivity | >10^12 | D·m |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Friction coefficient | 0.28 | — |
| Absorption of moisture (24 h) | 0.5 | % |
Hardness and mechanical resistance of delrin® ball – POM
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 80-90 | Shore D |
| Exercise temperatures | -40/85 | ° C |
| Exercise temperatures | -40/185 | °F |
Available diameters and grades for delrin® ball – POM
| Parameter | Value |
|---|---|
| Minimum diameter | 1 mm — 3/64′′′ |
| Maximum diameter | 160 mm — 6.5/16′′′ |
| Grades available | 0-I-II-III-IV-V |
Corrosion resistance of delrin® ball – POM
Delrin® is resistant to contact with basic, neutral and medium acidic substances, seawater, gasoline and its derivatives, mineral oils and fats, inorganic saline solutions, aliphatic, aromatic and chloride hydrocarbons, low-grade alcohol, ether. It is not resistant to contact with strong acids (hydrochloric acid, phosphoric acid, nitric acid, sulphuric acid), mineral acids, chlorides, alkalis.
Applications of delrin® ball – POM
Agitators in aerosol bombs, light safety valves, low-load bearings. Special pumps and valves, sliding guides for furniture, fluid flow control devices, medical devices. Employees in the food, chemical, electronic and pharmaceutical industries.
