Technical datasheet

Crastin® HR5315HF BK503

Supplied byCelanese- Last Updated on May 19, 2026

Crastin® HR5315HF BK503 by Celanese is a high flow, moderately tough, hydrolysis resistant polybutylene terephthalate (PBT) resin reinforced with 15% glass. Possesses mechanical and physical properties such as stiffness & toughness, heat-, friction-, chemical-, heat aging- & wear resistance, excellent surface finishes and good colorability. Exhibits excellent balance of properties between terminal pullout & impact resistance, good melt stability and excellent electrical insulation characteristics. Good melt stability enables the recycling of properly handled production waste. Crastin® HR5315HF BK503 can be processed using injection molding. Applicable for electronics, electrical, automotive, mechanical engineering, chemical, domestic appliances and sporting goods industry. Developed for USCAR Class 3 and 4 environments.
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Crastin® HR5315HF BK503 properties

Electrical properties

PropertiesValue & unitTest conditionTest method
Comparative Tracking Index (CTI)0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Strength0.0 Visible After LoginVisible After LoginVisible After Login
Dissipation Factor0.0 Visible After LoginVisible After LoginVisible After Login
Surface resistivity0.0 Visible After LoginVisible After LoginVisible After Login
Volume Resistivity0.0 Visible After LoginVisible After LoginVisible After Login

Flammability properties

PropertiesValue & unitTest conditionTest method
Burning Rate0.0 Visible After LoginVisible After LoginVisible After Login
Burning behavior thickness0.0 Visible After LoginVisible After LoginVisible After Login
Limiting Oxygen Index (LOI)0.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
Elongation at Break0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Rockwell R0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Unnotched Charpy0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Unnotched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Modulus of Elasticity0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength at Break0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

PropertiesValue & unitTest conditionTest method
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login

Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Flow0.0 Visible After LoginVisible After LoginVisible After Login
Linear Mold Shrinkage, Transverse0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
Heat Deflection Temperature (HDT), Unannealed0.0 Visible After LoginVisible After LoginVisible After Login
Heat Deflection Temperature (HDT), Unannealed0.0 Visible After LoginVisible After LoginVisible After Login
Melting Point0.0 Visible After LoginVisible After LoginVisible After Login

Crastin® HR5315HF BK503 Processing Guidelines

Injection Molding Processing Guidelines

PropertiesValue & unitTest conditionTest method
Drying TemperatureVisible After LoginVisible After Login
Drying TimeVisible After LoginVisible After Login
Melt TemperatureVisible After LoginVisible After Login
Moisture Content (Max)Visible After LoginVisible After Login
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