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Crastin® SK602 BK851

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Polymer Name: Polybutylene Terephthalate (PBT), Thermoplastic Polyester
Processing Methods: Injection Molding
Fillers Included: Glass Fiber
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Identification & Functionality

Crastin® SK602 BK851 Features & Benefits

Materials Features

Applications & Uses

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Modulus5800MPaASTM D 638
Stress at Break98MPaISO 527-1/-2
Strain at Break3.5%ISO 527-1,2
Charpy Impact Strength (23°C)40kJ/m2ISO 179/1eU
Charpy Notched Impact Strength (23°C)5.4kJ/mISO 179
Izod Notched Impact Strength (23°C)5kJ/m2ISO 180/1A
Poisson's Ratio0.35--
Physical Properties
ValueUnitsTest Method / Conditions
Molding Shrinkage - Parallel0.4%ISO 294-4
Molding Shrinkage - Normal1.1%ISO 294-4, 2577
Flow Length360mm-
Flow Length - Pressure80MPa-
Flow Length - Width/Thickness2mm-
Thermal Properties
ValueUnitsTest Method / Conditions
Melting Temperature (10°C/min)225°CISO 11357-1/-3
Temperature of Deflection Under Load(1.8 MPa)192°CISO 75-1/-2
Relative Temperature Index - Electrical (0.75 mm)130°CUL 746B
Relative Temperature Index - Electrical (1.5 mm)130°CUL 746B
Relative Temperature Index - Electrical (3 mm)130°CUL 746B
Relative Temperature Index - Electrical (6 mm)130°CUL 746B
Relative Temperature Index - Impact (0.75 mm)115°CUL 746B
Relative Temperature Index - Impact (1.5 mm)115°CUL 746B
Relative Temperature Index - Impact (3 mm)115°CUL 746B
Relative Temperature Index - Impact (6 mm)115°CUL 746B
Relative Temperature Index - Strength (0.75 mm)120°CUL 746B
Relative Temperature Index - Strength (1.5 mm)120°CUL 746B
Relative Temperature Index - Strength (3 mm)120°CUL 746B
Relative Temperature Index - Strength (6 mm)120°CUL 746B
Electrical Properties
ValueUnitsTest Method / Conditions
Relative Permittivity (100 Hz)3.7-IEC 62631-2-1
Relative Permittivity (1 MHz)3.6-ASTM D150
Dissipation Factor (100 Hz)7E-4IEC 62631-2-1
Dissipation Factor (1 MHz)172E-4IEC 62631-2-1
Surface Resistivity1.00E+14ohmIEC 62631-3-2
Electric Strength35kV/mmIEC 60243-1
Comparative Tracking Index - CTI225VIEC 60112
Volume Resistivity>1E13ohm.mIEC 60093
Flammability
ValueUnitsTest Method / Conditions
Burning Behaviour (1.5 mm, Nominal Thickness)HBclassIEC 60695-11-10
Burning Behaviour (Thickness h)HBclassIEC 60695-11-10
Glow Wire Flammability Index - GWFI (3 mm)700°CIEC 60695-2-12
FMVSS ClassB-ISO 3795 (FMVSS 302)
Burning Rate (1 mm, Thickness)30mm/minISO 3795 (FMVSS 302)
Ul RecognitionYes-UL 94
Thickness Tested1.5mmIEC 60695-11-10
Other Properties
ValueUnitsTest Method / Conditions
Density1410kg/m³ISO 1183
Processing Information (Injection Molding)
ValueUnitsTest Method / Conditions
Drying RecommendedYes--
Drying Temperature120°C-
Drying Time (Dehumidified Dryer)2.0 - 4.0h-
Processing Moisture Content≤0.04%-
Melt Temperature Optimum250°C-
Min. Melt Temperature240°C-
Max. Melt Temperature260°C-
Mold Temperature Optimum80°C-
Min. Mold Temperature30°C-
Max. Mold Temperature130°C-
Hold Pressure Range≥60MPa-
Hold Pressure Time3s/mm-
Back PressureAs low as possible--
Ejection Temperature170°C-
VDA Properties
ValueUnitsTest Method / Conditions
Emission of Organic Compounds140µgC/gVDA 277
Odour3classVDA 270
Fogging, G - Value (Condensate)0.1mgISO 6452
Chemical Resistance
Chemical Type Chemical Name Resistance
Acids Acetic Acid (5% by mass) (23°C) Probably Resistant
Acids Chromic Acid solution (40% by mass) (23°C) Not Recommended
Acids Citric Acid solution (10% by mass) (23°C) Probably Resistant
Acids Hydrochloric Acid (36% by mass) (23°C) Not Recommended
Acids Lactic Acid (10% by mass) (23°C) Probably Resistant
Acids Nitric Acid (40% by mass) (23°C) Not Recommended
Acids Sulfuric Acid (38% by mass) (23°C) Not Recommended
Acids Sulfuric Acid (5% by mass) (23°C) Not Recommended
Alcohols Ethanol (23°C) Probably Resistant
Alcohols Isopropyl alcohol (23°C) Probably Resistant
Alcohols Methanol (23°C) Probably Resistant
Bases Ammonium Hydroxide solution (10% by mass) (23°C) Probably Resistant
Bases Sodium Hydroxide solution (1% by mass) (23°C) Probably Resistant
Bases Sodium Hydroxide solution (35% by mass) (23°C) Not Recommended
Ethers Diethyl ether (23°C) Probably Resistant
Hydrocarbons iso-Octane (23°C) Probably Resistant
Hydrocarbons n-Hexane (23°C) Probably Resistant
Hydrocarbons Toluene (23°C) Probably Resistant
Ketones Acetone (23°C) Probably Resistant
Mineral oils Insulating Oil (23°C) Probably Resistant
Mineral oils SAE 10W40 multigrade motor oil (130°C) Not Recommended
Mineral oils SAE 10W40 multigrade motor oil (23°C) Probably Resistant
Mineral oils SAE 80/90 hypoid-gear oil (130°C) Not Recommended
Other 1% nonylphenoxy-polyethyleneoxy ethanol in water (23°C) Probably Resistant
Other 50% Oleic acid + 50% Olive Oil (23°C) Probably Resistant
Other DOT No. 4 Brake fluid (130°C) Not Recommended
Other Ethyl Acetate (23°C) Probably Resistant
Other Ethylene Glycol (50% by mass) in water (108°C) Not Recommended
Other Hydrogen peroxide (23°C) Not Recommended
Other Phenol solution (5% by mass) (23°C) Probably Resistant
Other Water (23°C) Probably Resistant
Other Water (90°C) Not Recommended
Salt solutions Sodium Carbonate solution (2% by mass) (23°C) Probably Resistant
Salt solutions Sodium Carbonate solution (20% by mass) (23°C) Probably Resistant
Salt solutions Sodium Chloride solution (10% by mass) (23°C) Probably Resistant
Salt solutions Sodium Hypochlorite solution (10% by mass) (23°C) Probably Resistant
Salt solutions Zinc Chloride solution (50% by mass) (23°C) Probably Resistant
Standard Fuels Diesel fuel (pref. ISO 1817 Liquid F) (>90°C) Not Recommended
Standard Fuels Diesel fuel (pref. ISO 1817 Liquid F) (23°C) Probably Resistant
Standard Fuels Diesel fuel (pref. ISO 1817 Liquid F) (90°C) Probably Resistant
Standard Fuels ISO 1817 Liquid 1 - E5 (60°C) Not Recommended
Standard Fuels ISO 1817 Liquid 2 - M15E4 (60°C) Not Recommended
Standard Fuels ISO 1817 Liquid 3 - M3E7 (60°C) Not Recommended
Standard Fuels ISO 1817 Liquid 4 - M15 (60°C) Not Recommended
Standard Fuels Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23°C) Probably Resistant
Standard Fuels Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23°C) Probably Resistant

Regulatory & Compliance

Packaging & Availability

Regional Availability

Crastin® SK602 BK851
DuPont