A. Schulman Diamond Centrex® HGM Automotive Grade, Injection Molding Grade

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A. Schulman Diamond Centrex® HGM Automotive Grade, Injection Molding Grade (discontinued **)
Categories:	Polymer; Thermoplastic; ASA Polymer
Material Notes:	Centrex HGM resin is an exceptionally high-gloss grade of ASA (acrylonitrile-styrene-acrylate). This injection molding grade has excellent gloss retention, excellent resistance to chemicals and high heat, good resistance to weather aging, and a wide molding window. Applications: Centrex HGM resin is used in the automotive market for exterior applications such as mirror housings, cowl grilles, license plate pockets, exterior trim and radiator grilles. As with any product, use of Centrex HGM 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	1.08 g/cc	ASTM D792
Linear Mold Shrinkage	0.0050 - 0.0060 cm/cm	ASTM D955
Melt Flow	0.40 g/10 min @Load 3.80 kg, Temperature 230 °C	ASTM D1238
	3.5 g/10 min @Load 10.0 kg, Temperature 220 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	97	ASTM D785
Tensile Strength, Yield	39.0 MPa	chs 0.2 in/min; ASTM D638
Tensile Modulus	2136 MPa	chs 0.2 in/min; ASTM D638
Flexural Strength	63.0 MPa	chs 0.05 in/min; ASTM D790
Flexural Modulus	2067 MPa	tangent; chs 0.05 in/min; ASTM D790
Izod Impact, Notched	21.0 J/m @Thickness 3.17 mm, Temperature -40.0 °C	ASTM D256
	208 J/m @Thickness 3.17 mm, Temperature 23.0 °C	ASTM D256
Impact Test	1.10 J @Temperature -40.0 °C	ASTM D3763
	30.0 J @Temperature 23.0 °C	ASTM D3763

Thermal Properties	Original Value	Comments
CTE, linear	121 µm/m-°C @Temperature -40.0 - 40.0 °C	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	80.0 °C	0.125";; ASTM D648
	88.0 °C	0.5";; ASTM D648
Vicat Softening Point	116 °C @Load 1.00 kg	120°C/hr; ASTM D1525

**
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