Crastin® S610SF BK851

Want to keep this datasheet? Save it now in your required format


Crastin® S610SF BK851 is an Unreinforced Polybutylene Terephthalate

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.

Ashby charts

See where falls on the material property chart for against in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.





23.0 °C

1.31 g/cm³

Show Material materials with Density of 1.31 g/cm³

ISO 1183



Elastic modulus

23.0 °C

2.6 GPa

Show Material materials with Elastic modulus of 2.6 GPa

ISO 527-1/-2


23.0 °C

13 %

Show Material materials with Elongation of 13 %

ISO 527-1/-2

Elongation at yield

23.0 °C

10 %

Show Material materials with Elongation at yield of 10 %

ISO 527-1/-2

Impact strength, Charpy notched

23.0 °C

4 kJ/m²

Show Material materials with Impact strength, Charpy notched of 4 kJ/m²

ISO 179/1eA

Poisson's ratio

23.0 °C

0.38 [-]

Show Material materials with Poisson's ratio of 0.38 [-]

Yield strength

23.0 °C

60 MPa

Show Material materials with Yield strength of 60 MPa

ISO 527-1/-2



Heat deflection temperature, 1.80 MPa

50 °C

Show Material materials with Heat deflection temperature, 1.80 MPa of 50 °C

ISO 75-1/-2

Melting point

224 °C

Show Material materials with Melting point of 224 °C

ISO 11357-1/-3 | 18°F/min


FMVSS Class: B -, Burning rate, Thickness 1 mm: 24 mm/min

Rheological Properties


Melt mass-flow rate

50 g/10min

Show Material materials with Melt mass-flow rate of 50 g/10min

ISO 1133 | 250°C/2.16kg


23.0 °C

1.7 %

Show Material materials with Shrinkage of 1.7 %

ISO 294-4, 2577

Shrinkage, transverse

23.0 °C

1.6 %

Show Material materials with Shrinkage, transverse of 1.6 %

ISO 294-4, 2577

Technological properties

Processing methods

Drying Recommended: yes, Drying Temperature: 120°C, Drying Time, Dehumidified Dryer: 2-4h, Processing Moisture Content: ≤0.04%, Melt Temperature Optimum: 240°C, Min. melt temperature: 235°C, Max. melt temperature: 260°C, Mold Temperature Optimum: 80°C, Min. mold temperature: 30°C, Max. mold temperature: 130°C, Hold pressure range: ≥60MPa, Hold pressure time: 4s/mm, Back pressure: As low as possible, Ejection temperature: 170°C