Zylar 631
Zylar® 631 is an impact modified styrene acrylic copolymer that provides a balance of clarity and toughness, with outstanding strength and rigidity. Zylar 631 also has superior processing characteristics for demanding injection molded application.
Key Features
- Good balance of toughness, stiffness and clarity
- Low density
- Ease of processing
- Gamma & ETO sterilizable
Applications
- Appliances and consumer goods
- Medical devices
- Toys
- Office accessories
- Industrial housings and covers
- Reusable drinkware
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Grade Version
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Properties
Properties of Zylar 631
Property, Test Condition Standard Unit Values Rheological Properties Melt Flow Rate, 200 °C/5 kg ASTM D 1238 g/10 min 5 Mechanical Properties Izod Notched Impact Strength, 23 °C (73 °F) ASTM D 256 ft-lb/in 2,2 Tensile Stress at Yield, 23 °C ASTM D 638 psi 5200 Tensile Modulus ASTM D 638 psi x 10³ 310 Elongation, Failure ASTM D 638 % 40 Flexural Strength, 23 °C ASTM D 790 psi 8800 Flexural Modulus, 23 °C ASTM D 790 psi x 10³ 300 Hardness, Rockwell ASTM D 785 R scale 70 Thermal Properties Vicat Softening Temperature, B/1 ( 120 °C/h, 10N) ASTM D 1525 °F 211 Optical Properties Refractive Index, Sodium D Line ASTM D 542 - 1,56 Light Transmission at 550 nm ASTM D 1003 % 89 Haze ASTM D 1003 % 1,5 Other Properties Density (ASTM ) ASTM D 792 g/cm³ 1,05 Water Absorption, Saturated at 23 °C ASTM D 570 % 0,1 Processing Melt Temperature Range - °F 400 - 460 Mold Temperature Range - °F 80 - 130 Rear Temperature Range - °F 355 - 415 Middle Temperature Range - °F 365 - 425 Front Temperature Range - °F 375 - 435 Drying Temperature - °F 150 Drying Time - h 2 Max Service Temperature - °F 480 Typical values for uncolored products
Please note that all processing data stated are only indicative and may vary depending on the individual processing complexities.
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Processing
Processing of Zylar 631
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Safety Data Sheet