Polymethyl methacrylate thermoplastic crystalline polymer. Known as "super steel" or "steel-like". The melting temperature of homopolymer POM is around 180°C. POM is a tough and elastic material, retaining excellent creep resistance, geometric stability, and impact resistance even at low temperatures. POM comes in both homopolymer and copolymer forms. The high crystallinity of POM results in a significant shrinkage rate, up to 2%~3.5%, which varies for different reinforced materials.POM boasts high strength and light weight, often used as a substitute for copper, zinc, tin, lead, and other non-ferrous metals. It is widely employed in industrial machinery, automotive, electronic appliances, daily necessities, pipes and accessories, precision instruments, and building materials.
| Physical Properties | Rated Value | Unit system | Testing Method |
Density | 1.59 | g/cm³ | ISO 1183 |
Melting Volume Flow Rate (MVR) (190°C/2.16 kg) | 7.50 | cm³/10min | ISO 1133 |
Absorption rate (Saturated, 23°C) | 0.90 | % | ISO 62 |
| Mechanical properties | Rated Value | Unit system | Testing Method |
Tensile Modulus | 3900 | MPa | ISO 527-2/1A/1 |
Tensile stress Submit | 38.0 | MPa | ISO 527-2/1A/50 |
Tensile strain Submit | 6.0 | % | ISO 527-2/1A/50 |
Breakage Rate | 12 | % | ISO 527-2/1A/50 |
Tensile Creep Modulus | ISO 899-1 | ||
1 hr | 3300 | MPa | |
1000 hr | 2100 | MPa | |
Bend Modulus (23°C) | 3500 | MPa | ISO 178 |
| Impact Resistance | Rated Value | Unit system | Testing Method |
Simply Supported Beam Notch Impact Strength | ISO 179/1eA | ||
-30°C | 3.0 | kJ/m² | |
23°C | 3.0 | kJ/m² | |
Simply Supported Beam Notch Impact Strength | ISO 179/1eU | ||
-30°C | 40 | kJ/m² | |
23°C | 40 | kJ/m² |
| Thermal performance | Rated Value | Unit system | Testing Method |
Hot Deformation Temperature (1.8 MPa, as-rolled) | 112 | °C | ISO 75-2/A |
Melting Point 3 | 166 | °C | ISO 11357-3 |
Linear Coefficient of Thermal Expansion | ISO 11359-2 | ||
Flowing | 0.000090 | cm/cm/°C | |
Horizontal | 0.000090 | cm/cm/°C |
