BP Amoco Amoco® 7556 Polypropylene Homopolymer, Fiber Grade

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BP Amoco Amoco® 7556 Polypropylene Homopolymer, Fiber Grade (discontinued **)
Categories:	Polymer; Thermoplastic; Polypropylene (PP); Polypropylene, Fiber Grade
Material Notes:	Suggested fabrication methods: Fiber spinning Features: High speed spinning, Improved bulk, Low gas fade Typical applications: Upholstery, BCF carpet yarns Complies with FDA specification, Title 21, CFR 177.1520. Typical property data below from injection molded samples. Data provided by BP Amoco Polymers, Inc.
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Physical Properties	Metric	English	Comments

Density	0.886 - 0.926 g/cc	0.0320 - 0.0335 lb/in³	ASTM D1505
Water Absorption	<= 0.010 %	<= 0.010 %	24 hours; ASTM D570
Linear Mold Shrinkage	0.010 - 0.025 cm/cm	0.010 - 0.025 in/in	ASTM D955
Melt Flow	18 g/10 min @Load 2.16 kg, Temperature 230 °C	18 g/10 min @Load 4.76 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	79 - 108	79 - 108	Normal range for injection molding resins; ASTM D785
Tensile Strength, Yield	40.0 MPa	5800 psi	ASTM D638
Elongation at Break	15 %	15 %	ASTM D638
Elongation at Yield	6.0 %	6.0 %	ASTM D638
Flexural Modulus	1.93 GPa	280 ksi	ASTM D790A
Izod Impact, Notched	0.200 - 0.300 J/cm @Diameter 3.17 mm	0.375 - 0.562 ft-lb/in @Diameter 0.125 in	bar

Thermal Properties	Metric	English	Comments
Deflection Temperature at 0.46 MPa (66 psi)	129 °C	264 °F	ASTM D648

Compliance Properties	Metric	English	Comments
FDA	Yes	Yes

**
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PBPP21 / 27662

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