Rynite® 935 BK505

Alternative and trade names
PET-(MD+GF)35

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Description

Common features of Rynite® thermoplastic polyester include mechanical and physical properties such as excellent balance of strength and stiffness, dimensional stability, creep resistance, heat resistance,high surface gloss and good inherent electrical properties at elevated temperature. It can be processed over a broad temperature range and has excellent flow properties. Rynite® thermoplastic polyester resins aretypically used in demanding applications in the automotive, electrical and electronics, appliances where they successfully replace metals and thermosets, as well as other thermoplastic polymers. Rynite® 935 BK505 is a 35% mica/glass reinforced modified polyethylene terephthalate resin with low warpage and excellent electrical properties.

This material data has been provided by Matmatch.

"Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

Property	Temperature	Value	Comment
Density	23.0 °C	1.58 g/cm³ Show Material materials with Density of 1.58 g/cm³	ISO 1183

Mechanical

Property	Temperature	Value	Comment
Elastic modulus	23.0 °C	10.2 GPa Show Material materials with Elastic modulus of 10.2 GPa	ISO 527-1/-2
Elongation	23.0 °C	2 % Show Material materials with Elongation of 2 %	ISO 527-1/-2
Flexural modulus	23.0 °C	9.3 GPa Show Material materials with Flexural modulus of 9.3 GPa	ISO 178
Flexural strength	23.0 °C	132 MPa Show Material materials with Flexural strength of 132 MPa	ISO 178
Impact strength, Charpy notched	-40.0 °C	4 kJ/m² Show Material materials with Impact strength, Charpy notched of 4 kJ/m²	ISO 179/1eA
	-6.0 °C	4 kJ/m² Show Material materials with Impact strength, Charpy notched of 4 kJ/m²	ISO 179/1eA
	23.0 °C	5.5 kJ/m² Show Material materials with Impact strength, Charpy notched of 5.5 kJ/m²	ISO 179/1eA

Impact strength, Charpy unnotched	-40.0 °C	21.5 kJ/m² Show Material materials with Impact strength, Charpy unnotched of 21.5 kJ/m²	ISO 179/1eU
	23.0 °C	25 kJ/m² Show Material materials with Impact strength, Charpy unnotched of 25 kJ/m²	ISO 179/1eU
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Poisson's ratio	23.0 °C	0.34 [-] Show Material materials with Poisson's ratio of 0.34 [-]
Tensile strength	23.0 °C	82 MPa Show Material materials with Tensile strength of 82 MPa	ISO 527-1/-2

Thermal

Property	Value	Comment
Heat deflection temperature, 0.45 MPa	240 °C Show Material materials with Heat deflection temperature, 0.45 MPa of 240 °C	ISO 75-1/-2
Heat deflection temperature, 1.80 MPa	200 °C Show Material materials with Heat deflection temperature, 1.80 MPa of 200 °C	ISO 75-1/-2
Melting point	252 °C Show Material materials with Melting point of 252 °C	ISO 11357-1/-3 \| 18°F/min
Relative temperature index, electrical	140 °C Show Material materials with Relative temperature index, electrical of 140 °C	UL 746B \| 120mil
Relative temperature index, mechanical impact	140 °C Show Material materials with Relative temperature index, mechanical impact of 140 °C	UL 746B \| 120mil
Relative temperature index, mechanical strength	140 °C Show Material materials with Relative temperature index, mechanical strength of 140 °C	UL 746B \| 120mil
Flammability	Burning Behav. at 60mil nom. thickn.: HB class, Thickness tested: 1.5 mm, UL recognition: yes -, Burning Behav. at thickness h: HB class, Thickness tested: 0.75 mm, UL recognition: yes -, Glow Wire Flammability Index, 30mil: 775 °C, Glow Wire Flammability Index, 60mil: 775 °C, Glow Wire Flammability Index, 120mil: 825 °C, Glow Wire Ignition Temperature, 30mil: 800 °C, Glow Wire Ignition Temperature, 60mil: 800 °C, Glow Wire Ignition Temperature, 120mil: 850 °C, FMVSS Class: B -, Burning rate, Thickness 1 mm: <80 mm/min

Electrical

Property	Temperature	Value	Comment
Dielectric constant, 1MHz	23.0 °C	4 [-] Show Material materials with Dielectric constant, 1MHz of 4 [-]	IEC 62631-2-1
Dielectric strength	23.0 °C	25 kV/mm Show Material materials with Dielectric strength of 25 kV/mm	IEC 60243-1 \| Short Time, 23°C, 2mm
Dissipation factor, 1MHz	23.0 °C	0.02 [-] Show Material materials with Dissipation factor, 1MHz of 0.02 [-]	IEC 62631-2-1

Rheological Properties

Property	Temperature	Value	Comment
Shrinkage	23.0 °C	0.2 % Show Material materials with Shrinkage of 0.2 %	ISO 294-4, 2577
Shrinkage, transverse	23.0 °C	0.7 % Show Material materials with Shrinkage, transverse of 0.7 %	ISO 294-4, 2577

Technological properties

Property
Fillers	35% Glass Fiber and Mineral Powder
Processing methods	Drying Recommended: yes, Drying Temperature: 120°C, Drying Time, Dehumidified Dryer: 4-6h, Processing Moisture Content: ≤0.02%, Melt Temperature Optimum: 285°C, Min. melt temperature: 280°C, Max. melt temperature: 300°C, Max. screw tangential speed: 0.2m/s, Mold Temperature Optimum: 110°C, Min. mold temperature: 100°C, Max. mold temperature: 120°C, Hold pressure range: ≥80MPa, Hold pressure time: 4s/mm, Back pressure: As low as possible, Ejection temperature: 170°C

Rynite® 935 BK505

Description

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