VALOX™ FR Resins 771

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Description

VALOX 771 is a 35% mineral/glass filled, flame retardant Polybutylene Terephthalate (PBT) injection moldable grade. It has excellent chemical resistance and a UL94V0@0.75 flame rating and 5VA@2.0mm. This grade also has a CTI of 0 and is a good candidate for applications that may see electrical arcing.

This material data has been provided by Matmatch.

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

1.7 g/cm³

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ASTM D 792

Water absorption

23.0 °C

0.09 %

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ISO 62 | 23°C, 50% RH

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

9.5 GPa

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ASTM D 638 | 5 mm/min

Elongation

23.0 °C

2 %

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ASTM D 638 | Type I, 5 mm/min

Elongation at yield

23.0 °C

2 %

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ASTM D 638 | Type I, 5 mm/min

Flexural modulus

23.0 °C

8.4 GPa

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ISO 178 | 2 mm/min

Flexural strain

23.0 °C

2 %

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ISO 178 | 2 mm/min

Flexural strength

23.0 °C

120 MPa

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ISO 178

Flexural yield strength

23.0 °C

120 MPa

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ISO 178 | 2 mm/min

Hardness, Ball Indentation

23.0 °C

120 MPa

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ISO 2039-1

Hardness, Rockwell R

23.0 °C

111 [-]

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ISO 2039-2

Impact strength, Charpy notched

-30.0 °C

6 kJ/m²

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ISO 179/2C

23.0 °C

6 kJ/m²

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ISO 179/2C

Impact strength, Charpy unnotched

-30.0 °C

20 kJ/m²

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ISO 179/1eU

23.0 °C

45 kJ/m²

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ISO 179/1eU

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Impact strength, Izod notched

-30.0 °C

5 kJ/m²

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ISO 180/1A

23.0 °C

5 kJ/m²

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ISO 180/1A

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Impact strength, Izod notched, ASTM

-30.0 °C

51 J/m

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ASTM D 256

23.0 °C

52 J/m

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ASTM D 256

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Impact strength, Izod unnotched

-30.0 °C

25 kJ/m²

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ISO 180/1U

23.0 °C

25 kJ/m²

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ISO 180/1U

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Impact strength, Izod unnotched, ASTM

-30.0 °C

390 J/m

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ASTM D 4812

23.0 °C

390 J/m

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ASTM D 4812

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Tensile strength

23.0 °C

85 MPa

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ASTM D 638 | Type I, 5 mm/min

Yield strength

23.0 °C

85 MPa

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ASTM D 638 | Type I, 5 mm/min

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

3.01E-5 1/K

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ISO 11359-2 | 23°C to 150°C

Coefficient of thermal expansion, transverse

23.0 °C

1.35E-4 1/K

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ISO 11359-2 | 23°C to 150°C

Heat deflection temperature, 1.80 MPa

203 °C

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ASTM D 648 | 1.82 MPa, 3.2mm, unannealed

Relative temperature index, electrical

120 °C

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UL 746B

Relative temperature index, mechanical impact

125 °C

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UL 746B

Relative temperature index, mechanical strength

140 °C

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UL 746B

Vicat softening temperature

190 °C

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ASTM D 1525 | Rate B/50

Flammability

UL Recognized, 94-5VA Flame Class Rating | 2mm | UL 94

Electrical

PropertyTemperatureValueComment

Comparative tracking index

23.0 °C

600 V

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IEC 60112

Dielectric constant

23.0 °C

3.3 [-]

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IEC 60250 | at 50/60 Hz

Dielectric strength

23.0 °C

20 kV/mm

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IEC 60243-1 | in oil, 3.2 mm

Dissipation factor

23.0 °C

0.01 [-]

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IEC 60250 | at 1 MHz

Rheological Properties

PropertyTemperatureValueComment

Melt mass-flow rate

20 g/10min

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ASTM D 1238 | 266°C/5.0 kg

Melt viscosity

260.0 °C

140 Pa·s

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ISO 11443 | 1500 sec⁻¹

Melt volume-flow rate

16 cm³/10min

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ISO 1133 | 265°C/5.0 kg

Shrinkage

23.0 °C

0.3 - 0.6 %

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SABIC method

Shrinkage, transverse

23.0 °C

0.4 - 1 %

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SABIC method

Technological properties

Property
Application areas

Circuit Protection,Electronic Components,Enclosure/Housing/Cover,Enclosures,Freezer,Meter Gas,Refrigerator,Wiring Devices

Fillers

35% Glass Fiber and Mineral Powder

Processing methods

Drying Temperature: 110-120°C, Drying Time: 2-4hrs, Maximum Moisture Content: 0.02%, Melt Temperature: 250-270°C, Nozzle Temperature: 240-260°C, Front - Zone 3 Temperature: 245-265°C, Middle - Zone 2 Temperature: 240-255°C, Rear - Zone 1 Temperature: 230-245°C, Hopper Temperature: 40-60°C, Mold Temperature: 40-100°C