Vacuum Casting Material Rubber-like polyurethanes-Data Sheet
May 20, 2020
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Vacuum Casting Material Rubber-like polyurethanes
Vacuum Casting is a copying technique used for the production of small series of functional plastic parts. Using two-component polyurethanes and silicone molds, Vacuum Casting is known for its fast production of high-quality prototypes or end-use products.
Technical Specifications
| Standard lead time | Up to 7 copies within 10 working days |
| Standard accuracy | ±0.3% (with lower limit on ±0.3 mm on dimensions smaller than 100 mm) |
| Minimum wall thickness | To ensure that the mold is filled properly, a wall thickness of at least 0.75 mm is necessary. For best results, we recommend a wall thickness of at least 1.5 mm |
| Maximum part dimensions | The size of the mold is limited by the dimensions of the vacuum chamber (1900 x 900 x 750 mm) and by the volume of the product (maximum volume: 10 liters) |
| Typical quantities | Up to 25 copies per mold (depending on the mold’s complexity and the casting materials) |
| Surface structure | High-quality surface finish comparable to injection molding |
Datasheet
Rubber-like polyurethanes
| Units | RPU4 | RPU5 | RPU6 | RPU10 | RPU11 | RPU12 | RPU13 | |
|---|---|---|---|---|---|---|---|---|
| Density | g/cm³ | 1.02 | 1.08 | 1.09 | 1.02 – 1.07 | 1.14 – 1.15 | 1.05 – 1.1 | 1.04 – 1.09 |
| Hardness at 23°C | Shore A | 63 | 79 | 85 | 35 | 51 | 95 | 70 |
| Tensile Strength | MPa | 3 | 12 | 17 | 1.5 – 3.5 | 3 | 9.5 – 11.5 | 6.5 – 8.5 |
| Tear Strength | KPa | 24 | 67 | 83 | n/a | 18 | n/a | 20 – 25 |
| Elongation at Break | % | 1000 | 620 | 810 | 900 – 1100 | 1200 | 200 – 300 | 400 – 500 |
| Color | Light amber | Black | Black | Translucent | Beige | Translucent | Off-white | |
| Colorability in Mass | -/+/++/+++ | + | - | - | ++ | + | ++ | ++ |
| Max Operating Temperature | °C | 80 | 80 | 80 | 70 | 70 | 70 | 70 |
