| Mechanical_Properties | Applications | Speedy Metals items |
Acetal provides high strength and stiffness coupled with enhanced dimensional stability and ease of machining. As a semi-crystalline material, acetal is also characterized by a low coefficient of friction and good wear properties -- especially in wet environments.
Because acetal absorbs minimal amounts of moisture, its physical properties remain constant in a variety of environments. Low moisture absorption results in excellent dimensional stability for close-tolerance machined parts. In high moisture or submerged applications, acetal bearings outperform nylon 4 to 1. Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents.
| Tensile Strength (psi) |
Elongation | Tensile Modulus (105 psi) |
Flexural Strength (psi) |
Flexural Modulus (105 psi) |
Impact Strength (Izod) |
Hardness (Rockwell M) |
|||
| At 73° F | 10,000 | 40 | 5.2 | 14,100 | At 73° F | 4.1 | Notched | 1.4 | 94 |
| At 160° F | 6,900 | At 160° F | 2.3 | Unnotched | 24 | ||||
| Coefficient of Friction | Deflection Temperature | |||
| Against Self | 0.3 | At 264 psi | 277°F | |
| Against Steel | 0.15 | At 66 psi | 300°F | |
Acetal is ideally suited for close tolerance mechanical parts and electrical insulators which require strength and stiffness. It also offers resistance to a wide range of chemicals including many solvents.