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Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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AvaSpire® AV-621 NT

Technical Datasheet | Supplied by Solvay
AvaSpire® AV-621 NT is an unreinforced, beige colored, flame retardant polyaryletherketones (PAEK) grade. Is suitable for processing by compression molding, injection blow molding, machining, thermoforming and profile-, fiber (spinning)-, film-, wire & cable- and blow molding extrusion. Offers good chemical resistance, high heat resistance, good ductility, fatigue resistance, good dimensional stability, excellent colorability, good impact resistance and good part aesthetics. Shows better ductility, low melt flow and higher HDT than comparable PEEK grades. Exhibits 20% higher tensile elongation at yield and twice the tensile elongation at break value when compared to PEEK grades. AvaSpire® AV-621 is easily fabricated using conventional thermoplastic melt processing techniques and standard equipment. Used in healthcare/medical applications, transportation, semiconductor, electronics, bearings, bushings, connectors, oil and gas industry and chemical processing. Complies with RoHS.
Product Type
PK (Polyketone) > PAEK
Physical Form

AvaSpire® AV-621 NT Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Water Absorption
0.20 %
(24 hr)
Specific Gravity
( )
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)
5.0 g/10 min
(At 400°C, 2.16 kg)
ASTM D1238

AvaSpire® AV-621 NT Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Drying Temperature
150 °C
Drying Time
4.0 hr
Rear Temperature
355 °C
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