A. Schulman Diamond Centrex® 485 Sheet Extrusion Grade

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A. Schulman Diamond Centrex® 485 Sheet Extrusion Grade (discontinued **)
Categories:	Polymer; Thermoplastic; ASA Polymer
Material Notes:	Centrex 485 resin is a low-gloss, medium-impact grade of ASA (acrylonitrile-styrene-acrylate) with good resistance to weather aging. It has good melt strength for extrusion and thermoforming, and it can be easily coextruded. The recommended substrate is ABS (acrylonitrile-butadiene-styrene) resin. Applications: Typical applications include those requiring weatherability and low gloss such as automotive and truck interiors, exterior siding and trim profiles. As with any product, use of Centrex 485 resin in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability. A. Schulman has acquired Network Polymers & Diamond Polymers.
Key Words:	Weatherable Polymer
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Physical Properties	Original Value	Comments

Specific Gravity	1.05 g/cc	ASTM D792
Melt Flow	7.0 g/10 min @Load 10.0 kg, Temperature 220 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	79	ASTM D785
Tensile Strength, Yield	20.7 MPa	chs 2.0 in/min; ASTM D638
Tensile Modulus	1447 MPa	chs 2.0 in/min; ASTM D638
Flexural Strength	38.6 MPa	chs 0.05 in/min; ASTM D790
Flexural Modulus	1378 MPa	tangent; chs 0.05 in/min; ASTM D790
Izod Impact, Notched	43.0 J/m @Thickness 3.17 mm, Temperature -40.0 °C	ASTM D256
	64.0 J/m @Thickness 3.17 mm, Temperature -18.0 °C	ASTM D256
	107 J/m @Thickness 3.17 mm, Temperature 23.0 °C	ASTM D256
Impact Test	6.00 J @Temperature -40.0 °C	ASTM D3763
	16.0 J @Temperature -18.0 °C	ASTM D3763
	24.0 J @Temperature 23.0 °C	ASTM D3763

Thermal Properties	Original Value	Comments
CTE, linear	94.0 µm/m-°C	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	79.0 °C	0.125";; ASTM D648

Optical Properties	Original Value	Comments
Gloss	10 %	Formed; 60°; ASTM D523
	20 %	Sheet; 60°; ASTM D523

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PDIAM350 / 126441

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