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Polybutylene Terephthalate (PBT) compounds

Polybutylene Terephthalate (PBT) compounds are high-performance thermoplastics offering excellent mechanical strength, dimensional stability, and heat and chemical resistance. Often reinforced with fillers, they provide electrical insulation, low moisture absorption, and reliability for automotive, electrical, and industrial applications.

Key properties

Test Standards

Unit

PBT4130, Typical values

Density

ISO 1183

gm/cm3

1.65

Glass contents

..

%

30

Izod impact strength

D-256

J/m

64

Water Absorption

ISO 62

%

0.2

Tensile Strength

ASTM D 638

kgf/cm2

1350

Flexural Strength

ASTM D 790

kgf/cm2

2000

Dielectric strength

ASTM D 149

kV/mm

20

Comparative Tracking Index

IEC 60112

Volts

3 PLC

Flammability Index

UL94

Rating

V0

Hot wire ignition

D-3874

sec

2 PLC @3.0 mm

ARC resistance

ASTM D 495

sec

7 PLC

RTI, str (°C) @3.0 mm thick

UL746B

°C

140

RTI, ELECTRICAL (°C) @3.0 mm thick

UL746B

°C

140

HAI ( High amper arc ignition)

UL746A

PLC

0

Heat Deflection Temperature

EN ISO 75-2

°C

80-90

Glow Wire Flammability Index

IEC 60695-2-12

°C

960°C

Material group

IEC 60112

 

3a

Pollution degree

IEC 60950

 

3

Insulation class

As per NEMA

 

B

Working temperature

..

 

(-)40°C to 130°C