The PMMA ball (methyl polymethacrylate) is distinguished by its exceptional transparency and abrasion resistance. It represents an economical and lightweight alternative to glass, while offering good mechanical properties, including shock resistance. Trust Marteau- Lemarie for a reliable and fast supply thanks to our stock available in France.
Physical characteristics of acrylic ball (pmma)
| Ownership | Value | Unit |
|---|---|---|
| Density | 1.18 | g/cm3 |
| Young Module | 2910 | MPa |
| Thermal expansion coefficient | 67 (T=0-100°C) | × 10−6 /°C |
| Thermal conductivity | 0.18 | W/m·K |
| Volume resistivity | >10^13 | D·m |
| Relative magnetic permeability | <~1 | — |
| Magnetic behaviour | Diamagnetic | — |
| Friction coefficient | 0.45 | — |
| Absorption of moisture (24 h) | 0.3 | % |
Hardness and mechanical resistance of acrylic ball (pmma)
| Ownership | Value | Unit |
|---|---|---|
| Hardness | 84-87 | Shore D |
| Exercise temperatures | -40/90 | ° C |
| Exercise temperatures | -40/194 | °F |
Diameters and grades available for acrylic ball (pmma)
| Parameter | Value |
|---|---|
| Minimum diameter | 1.5 mm — 1/16′′′ |
| Maximum diameter | 100 mm — 4′′ |
| Grades available | 0-I-II-III-IV-V |
Corrosion resistance of acrylic ball (pmma)
Good contact resistance with aqueous solutions, diluted inorganic acids, aliphatic hydrocarbons, ammonia, alkalis, oils and fats. Do not resist contact with aromatic hydrocarbons, halogens, ketones, esters, organic acids, ethyl and methyl alcohol.
Applications of acrylic ball (pmma)
Safety valves, fluid level indicators, laboratory instruments, gambling balls. May be used as a more economical variant of polycarbonate or lighter glass.
