Crastin® SF – A new PBT family for Super Fast (SF) injection molding
New Crastin® SF PBT products use a technology to enhance flow of the resin to extremely high levels:
- Crastin® SF dramatically reduces manufacturing costs
- improving productivity by up to 30%
- reducing machine size thanks to lower filling pressure
- reducing part thickness under standard filling conditions
- lower energy consumption
- wider processing window
- lower reject rate
- improved flow to fill moulds for thinner or more complex parts than standard PBT grades
- Crastin® SF offers excellent property retention: stress, strain and impact, thermal stability and more
- Crastin® SF is a direct drop-in replacement for standard PBT grades
Crastin® SF – 30% more flow!
Crastin® SF – 30% less cycle time!
Available in 3 grades…
a non-reinforced and two reinforced resins with 15% and 30% glass
What to make of it
- Connector: Thin, complex, small parts running in high productivity tools
- Automotive electronic components, such as sensors
- Coil formers and solenoids
- Structurally-complex parts for furniture
- Motor housings
PROPERTY COMPARISON
| Property |
Test Method |
Units |
Crastin® |
Crastin® |
| SK612SF |
SK602 |
SK615SF |
SK605 |
Mechanical
Stress at break
Strain at break
Tensile Modulus
Notched Charpy |
ISO 527 - 1/-2
ISO 527 - 1/-2
ISO 527 - 1/-2
ISO 179 / 1eA |
MPa
%
MPa
kJ/m² |
106
3,2
5800
6 |
109
3,5
5800
7 |
145
2,5
9900
9 |
140
2,7
10000
10 |
Thermal
Temperature of deflection under load 1.8MPa |
ISO 75 / AF |
°C |
200 |
200 |
205 |
205 |
Other
Density
Moulding shrinkage
Normal, 2.0mm
Parallel, 2.0mm |
ISO 1183
ISO 294-4 |
kg/m³
% |
1410
1,1
0,4 |
1410
1,1
0,4 |
1530
1,1
0,4 |
1530
1,1
0,3 |
| Property |
Test Method |
Units |
Crastin®
S610SF |
Crastin®
S600F20 |
Mechanical
Tensile Modulus
Stress at yield
Strain at yield
Notched Charpy |
ISO 527 - 1/-2
ISO 527 - 1/-2
ISO 527 - 1/-2
ISO 179 / 1eA |
MPa
MPa
%
kJ/m² |
2500
56
5
4 |
2500
58
5
5 |
Thermal
Melting Temperature
Temperature of deflection under load 1.8MPa |
ISO 11357
ISO 75 / AF |
°C |
225
50 |
225
50 |
Other
Density
Moulding shrinkage
Normal, 2.0mm
Parallel, 2.0mm |
ISO 1183
ISO 294-4 |
kg/m³
% |
1310
1,6
1,7 |
1310
1,6
1,7 |
Download a PDF of the DuPont™ Crastin® SF PBT polyester resin profile here.
We can help
From concept to commercialization, DuPont can help you develop reliable, cost-saving components in Crastin® or any of our nine families of engineering polymers. Please contact the nearest DuPont representative for your country.
