| Surface Ra of different Plastic | ||||||||||||||
| molding | material | Ra index arrange μm | ||||||||||||
| 0.012 | 0.025 | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | 6.3 | 12.5 | 25 | |||
| inject | Thermoplastics | PMMA | 0.025 | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | |||||
| ABS | 0.025 | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | |||||||
| AS | 0.025 | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | |||||||
| PC | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | ||||||||
| PS | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||
| PP | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | |||||||||
| PA | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | |||||||||
| PE | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | 6.3 | |||||||
| POM | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||
| PSU | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| PVC | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| PPO | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| Chlorinated polyether | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| PBT | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| Thermosetting | Aminoplasts | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | ||||||||
| phenolics | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| silicone plastic | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| press | Aminoplasts | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | ||||||||
| phenolics | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| Melamine | 0.1 | 0.2 | 0.4 | 0.8 | ||||||||||
| Silicone plastic | 0.2 | 0.4 | 0.8 | |||||||||||
| DAP | 0.4 | 0.8 | 1.6 | 3.2 | ||||||||||
| Unsaturated polyester | 0.4 | 0.8 | 1.6 | 3.2 | ||||||||||
| Epoxy plastic | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | |||||||||
| Plexiglass | 0.025 | 0.05 | 0.1 | 0.2 | 0.4 | 0.8 | 1.6 | 3.2 | 6.3 | |||||
| PA | 1.6 | 3.2 | 6.3 | 12.5 | ||||||||||
| PTFE | 0.8 | 1.6 | 3.2 | 6.3 | 12.5 | |||||||||
| PVC | 1.6 | 3.2 | 6.3 | 12.5 | ||||||||||
| Reinforced plastics | 1.6 | 3.2 | 6.3 | 12.5 | 25 | |||||||||
Link to this article：surface roughness
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