VALOX™ FR Resins 357U

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Description

VALOX 357U is an unreinforced, UV stabilized, impact modified flame retardant Polybutylene Terephthalate/Polycarbonate (PBT) injection moldable grade. It has excellent chemical resistance and a UL94V0@0.64mm and 5VA@3.0mm flame rating. This is a good candidate for applications in the electrical industry including bobbins, switches, and enclosures.

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

PropertyTemperatureValueComment

Density

23.0 °C

1.34 g/cm³

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ASTM D 792

Water absorption

23.0 °C

0.08 %

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ASTM D 570 | 24 Hours

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

2.05 GPa

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ASTM D 638 | 50 mm/min

Elongation

23.0 °C

110 %

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ASTM D 638 | Type I, 50 mm/min

Elongation at yield

23.0 °C

5.28 %

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ASTM D 638 | 50 mm/min

Flexural modulus

23.0 °C

2.06 GPa

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ASTM D 790 | 1.3 mm/min, 50 mm span

Flexural strength

23.0 °C

82 MPa

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ASTM D 790 | 1.3 mm/min, 50 mm span

Flexural yield strength

23.0 °C

82 MPa

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ASTM D 790 | 1.3 mm/min, 50 mm span

Hardness, Rockwell R

23.0 °C

117 [-]

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ASTM D 785

Impact strength, Izod notched, ASTM

23.0 °C

534 J/m

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ASTM D 256

Impact strength, Izod unnotched, ASTM

23.0 °C

3204 J/m

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ASTM D 4812

Tensile strength

23.0 °C

48 MPa

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ASTM D 638 | Type I, 50 mm/min

Yield strength

23.0 °C

48 MPa

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ASTM D 638 | Type I, 50 mm/min

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

1.24E-4 1/K

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ASTM E 831 | 60°C to 138°C

Heat deflection temperature, 1.80 MPa

98 °C

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ASTM D 648 | 1.82 MPa, 6.4 mm, unannealed

Relative temperature index, electrical

120 °C

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UL 746B

Relative temperature index, mechanical impact

120 °C

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UL 746B

Relative temperature index, mechanical strength

140 °C

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UL 746B

Flammability

UL Recognized, 94-5VA Flame Class Rating | 3mm | UL 94

Electrical

PropertyTemperatureValueComment

Comparative tracking index

23.0 °C

2 V

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UL 746A

Dielectric constant

23.0 °C

3.2 [-]

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ASTM D 150 | at 1 MHz

Dielectric strength

23.0 °C

18.5 kV/mm

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ASTM D 149 | in oil, 3.2 mm

Dissipation factor

23.0 °C

0.03 [-]

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ASTM D 150 | at 1 MHz

Rheological Properties

PropertyTemperatureValueComment

Shrinkage

23.0 °C

1 - 1.4 %

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SABIC method | 2.3-4.6 mm

Shrinkage, transverse

23.0 °C

1.2 - 1.6 %

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SABIC method | 2.3-4.6 mm

Technological properties

Property
Application areas

Air Conditioning,Air Filtration,Amusement Machine,Audio,Building Accessory,Commercial Storage/Cookware,Cooking Range,Data Transfer,Document Handling,Electronic Components,Enclosure/Housing/Cover,Enclosures,Energy Management,EV Infrastructure,Fluid Delivery,Freezer,Furnace/Heater,Heavy Vehicles,Industrial Material Handling,Lab Ware and Clinical Diagnostics,Lawn/Garden,LED Lighting,Medical Device,Medical Facility Infrastructure,Monitoring and Imaging,Non-LED Lighting,Personal Computing,Photovoltaic Components,Plumbing,Power Manangement,Refrigerator,Renal and Blood Handling,Small Appliance,Surgical Devices,Swimming Pool/Spa,Traffic Management,Wearables,Window,Wireless Communications,Wiring Devices,Wire & cable

Processing methods

Drying Temperature: 120°C, Drying Time: 3-4hrs, Drying Time (Cumulative): 12hrs, Maximum Moisture Content: 0.02%, Melt Temperature: 250-265°C, Nozzle Temperature: 245-260°C, Front - Zone 3 Temperature: 250-265°C, Middle - Zone 2 Temperature: 245-260°C, Rear - Zone 1 Temperature: 240-255°C, Mold Temperature: 50-75°C, Back Pressure: 0.3-0.7MPa, Screw Speed: 50-100rpm, Shot to Cylinder Size: 40-80%, Vent Depth: 0.025-0.038mm