MRC Polymers NAXALOY™ 770A4 770 PC/ABS Blend. Toughness, Rigidity, Heat Resistance, EZ flow

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MRC Polymers NAXALOY™ 770A4 770 PC/ABS Blend. Toughness, Rigidity, Heat Resistance, EZ flow (discontinued **)
Categories:	Polymer; Thermoplastic; ABS Polymer; Polycarbonate/ABS Alloy, Unreinforced; Polycarbonate (PC)
Material Notes:	PC/ABS Blend. Toughness, Rigidity, Heat Resistance, High Impact, EZ flow. Mechanical properties measured on 1/8 in. (3.2 mm) samples.
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Physical Properties	Original Value	Comments

Density	1.13 g/cc	ASTM D792
Water Absorption	0.15 %	24 hours, ASTM D570
Linear Mold Shrinkage	0.0050 - 0.0070 cm/cm	1/8" (3.2 mm); ASTM D955
Melt Flow	3.0 g/10 min @Load 3.80 kg, Temperature 230 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Rockwell R	115	ASTM D785
Tensile Strength, Yield	55.0 MPa	ASTM D638
Elongation at Break	60 %	ASTM D638
Flexural Yield Strength	83.0 MPa	ASTM D790
Flexural Modulus	2.345 GPa	ASTM D790
Izod Impact, Notched	6.41 J/cm	ASTM D256
	4.27 J/cm @Temperature -30.0 °C
Impact Test	52.0 J @Temperature -28.9 °C	J instrumented dart; ASTM D3763

Thermal Properties	Original Value	Comments
CTE, linear	72.0 µm/m-°C @Temperature -40.0 - 35.0 °C
Deflection Temperature at 1.8 MPa (264 psi)	110 °C	ASTM D648
Flammability, UL94	HB @Thickness 3.18 mm	MRC Rating
	HB @Thickness 3.18 mm	MRC Rating

Processing Properties	Original Value	Comments
Processing Temperature	260 - 282 °C
Rear Barrel Temperature	249 - 271 °C
Middle Barrel Temperature	260 - 277 °C
Front Barrel Temperature	271 - 282 °C
Nozzle Temperature	260 - 282 °C
Mold Temperature	49.0 - 82.0 °C
Drying Temperature	110 °C
Dry Time	4 hour
Moisture Content	<= 0.020 %
Dew Point	<= 0.000 °F
Drying Air Flow Rate	0.800 - 1.00 ft³/min (CFM)	per lb/hour resin processed
Injection Pressure	10000 - 20000 psi
Back Pressure	50.0 - 100 psi
Cushion	0.130 - 0.250 in
Screw Speed	40 - 70 rpm

Descriptive Properties
Fill Rate	Slow - Moderate
Hold Pressure	40 - 60% of injection pressure
Packing Pressure	50 - 75% of injection pressure

**
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PMRC951 / 20991

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