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Formula: PMMA, Acrylic
Form: Rod
Material: PMMA
Commodity: Polymers
Polymethylmethacrylate (PMMA) Rods are rigid, transparent thermoplastic products within our broad range of rods. With 122 size variations available, they’re precision-machined and highly customizable. Characterized by high light transmittance and weather/chemical resistance, these rods are used across a wide selection of applications, including signage, lighting, scientific equipment and medical devices. Across a wide range of sizes, our PMMA rods enable engineers and designers to prototype and build specialty components suitable for a wide variety of industries.
Tolerances
Rod
| Diameter | +20% / -10% |
|---|
Material Properties for Polymers
Physical Properties
| Element | Value |
|---|---|
| Abbe number | 57.2 |
| Flammability | HB |
| Radiation resistance | Fair |
| Refractive index | 1.49 |
| Resistance to Ultra-violet | Good |
| Limiting oxygen index( % ) | 17-20 |
| Water absorption - over 24 hours( % ) | 0.2 |
| Density( gcm⁻³ ) | 1.19 |
Chemical Resistance
| Element | Value |
|---|---|
| Acids - concentrated | Good-Poor |
| Acids - dilute | Good-Poor |
| Alcohols | Good-Poor |
| Alkalis | Good |
| Aromatic hydrocarbons | Poor |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Poor |
| Halogens | Poor |
| Ketones | Poor |
Electrical Properties
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2.6 |
| Dissipation factor @ 1MHz | 0.014 |
| Dielectric strength( kV mm⁻¹ ) | 15 |
| Surface resistivity( Ohm/sq ) | 10¹⁴ |
| Volume resistivity( Ohmcm ) | 2-14 x 10¹⁵ |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Rockwell | M92-100 |
| Poisson's ratio | 0.35-0.4 |
| Elongation at break( % ) | 2.5-4 |
| Tensile modulus( GPa ) | 2.4-3.3 |
| Izod impact strength( J m⁻¹ ) | 16-32 |
| Tensile strength( MPa ) | 80 |
Thermal Properties
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 105 |
| Heat-deflection temperature - 1.8MPa( C ) | 95 |
| Lower working temperature( C ) | -40 |
| Upper working temperature( C ) | 50-90 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1400-1500 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.17-0.19@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 70-77 |