PEEK (polyetheretherketone) is a high-performance engineering plastic with outstanding resistance to harsh chemicals, and excellent mechanical strength and dimensional stability. It offers hydrolysis resistance to steam, water, and sea water. PEEK has the ability to maintain stiffness at high temperatures and is suitable for continuous use at temperatures up to 338oF (170oC). This engineering plastic has a proven track record in challenging environments such as aerospace, oil and gas, food and beverage processing, and semiconductor.
PEEK IS WIDELY USED FOR:
- Semiconductor machinery components
- Aerospace parts
- Bushings, bearings, seals, and back-up rings
- Pump and valve components
- Vacuum wand handles
- Down hole electrical connectors
- Medical instrument parts
- Food processing machinery components
The color of pure PEEK material generally appears light yellow, modified (with carbon fiber, graphite) PEEK material generally appears black, and PEEK with added glass fiber is generally coffee colored.
Chemical name: poly(oxy-1,4-phenyene-oxy-1, 4-phenyene)]
Chemical formula: C19H14O3
Mechanical Properties
| UNITS | ASTM TEST | PEEK | |
| TENSILE STRENGTH | psi | D638 | 14,000 |
| TENSILE MODULUS OF ELASTICITY | psi | D638 | 490,000 |
| TENSILE ELONGATION | % | D638 | 60 |
| FLEXURAL STRENGTH | psi | D790 | 24,600 |
| FLEXURAL MODULUS OF ELASTICITY | psi | D790 | 590,000 |
| COMPRESSIVE STRENGTH | psi | D695 | – |
| HARDNESS | scale as noted | D785, D2240 | M105, R126, Shore D 85 |
| IZOD IMPACT | ft-lbs/in | D256 | 1.6 |
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