Handbook of Plastics Testing and Failure Analysis. Vishu ShahЧитать онлайн книгу.
according to the classification.
TABLE 1‐1. POM Polyoxymethylene (Acetal) Materials, Detail Requirements, hNatural Color Only
| Group | Description | Class | Description | Grade | Descriptiona | Flow Rate, ISO 1133b (g/10 min) | Melting Point, ISO 3146/ Method C2c (°C, min) | Density, ISO 1183 (g/cm3) | Tensile Strength, ISO 527d (MPa, min) | Flexural Modulus, ISO 178e (MPa, min) | Izod Impact Resistance, ISO 180/1Af (KJ/m2, min) | Deflection Temperature, ISO 75/Method A,g 1.82 MPa (°C, min) |
| 1 | Homopolymer | 1 | General purpose | 1 | <8 | 170 | 1.39–1.44 | 65 | 2400 | 8.5 | 100 | |
| and high flow | 2 | 8–16 | 170 | 1.39–1.44 | 65 | 2700 | 5.0 | 100 | ||||
| 3 | 16–28 | 170 | 1.39–1.44 | 65 | 2700 | 4.5 | 105 | |||||
| 4 | 28–55 | 170 | 1.39–1.44 | 65 | 2700 | 4.0 | 105 | |||||
| 0 | Other | |||||||||||
| 2 | Fast cycle | 1 | 11–18 | 170 | 1.39–1.44 | 65 | 2400 | 4.5 | 100 | |||
| 2 | 19–33 | 170 | 1.39–1.44 | 65 | 2400 | 4.0 | 100 | |||||
| 0 | Other | |||||||||||
| 3 | UV stabilized | 1 | <8 | 170 | 1.39–1.44 | 65 | 2400 | 8.5 | 100 | |||
| 2 | 8–16 | 170 | 1.39–1.44 | 65 | 2700 | 5.0 | 100 | |||||
| 0 | Other | |||||||||||
| 4 | Impact modified | 1 | <3 | 170 | 1.31–1.37 | 35 | 1100 | 70 | 70 | |||
| 2 | 8–15 | 170 | 1.36–1.42 | 45 | 1900 | 9.0 | 80 | |||||
| 0 | Other |
|