ABS Hei-Cast PU8150 for Vacuum Casting Material
Hei-Cast PU8150 is a high-hardness, high-strength polyurethane casting material optimized for vacuum molding, offering fast curing, fine detail replication, and engineering-plastic-like performance—ideal for functional prototypes and low-volume production, though with limited heat resistance (<120°C).
Hei-Cast PU8150
Basic Characteristics
- Material Type: Polyurethane (PU) elastomer, a two-component rapid-cure system designed for vacuum casting (e.g., silicone mold replication).
- Curing Method: Room-temperature or heat-assisted curing with low shrinkage for high-precision reproduction.
- Thixotropy: Excellent flow properties for filling intricate mold details.
Color
- Typically semi-transparent or light amber; post-cure tinting is possible (e.g., to mimic ABS, PC, or other engineering plastics).
Technical Performance Parameters
| Property | Typical Value/Range |
| Mixed Viscosity (25°C) | 200–400 mPa·s |
| Cure Time (25°C) | 4–6 hours (heat acceleration possible) |
| Hardness (Shore D) | 80–85 |
| Tensile Strength | 40–50 MPa |
| Elongation at Break | 10–20% |
| Flexural Strength | 60–70 MPa |
| HDT (Heat Deflection Temp.) | 80–100°C |
| Density | 1.10–1.15 g/cm³ |
Material Composition
- Part A (Resin): Hydroxyl-terminated polyether/polyester polyols, catalysts.
- Part B (Hardener): Isocyanate prepolymer (e.g., MDI/TDI derivatives).
- Additives: May include defoamers, leveling agents (varies by manufacturer).
Physical Properties Table
| Property | Test Standard | Value |
| Impact Strength | ASTM D256 | 15–20 kJ/m² |
| Volume Resistivity | ASTM D257 | 10¹²–10¹³ Ω·cm |
| Dielectric Strength | ASTM D149 | 15–20 kV/mm |
| Linear Shrinkage | / | <0.3% |
Applications & Industries
- Prototyping: Functional testing parts, assembly verification models.
- Low-Volume Production: Replacement for injection-molded plastics (e.g., housings, gears, seals).
- Industrial: Automotive interiors, electronics mounts, medical device handles.
- Consumer Goods: Metal-like decorative parts, wear-resistant pads.
Vacuum Casting Process Compatibility
- Compatibility: Excellent; low viscosity ensures flawless mold filling and easy demolding.
- Recommended Parameters:
- Vacuum: ≤0.1 bar (to avoid bubbles).
- Pouring Temp.: 25–40°C.
- Post-Cure: 60–80°C for 2–4 hours enhances properties.
Advantages & Limitations
Pros:
- High mechanical strength (close to ABS/PC).
- Fast turnaround for small batches (50–100 units).
- Resistant to oils, weak acids/bases.
- Limited long-term heat resistance (<120°C).
- Moderate UV stability (requires coating for outdoor use).
Manufacturers & Alternatives
- Original Brand: Hei-Cast (Japan; verify full brand name).
- Alternatives:
- Axson PU788 (similar hardness/strength).
- Smooth-On Task Series (e.g., Task 9, cost-effective).
- Polytek FlexFoam-iT! (for flexible applications).
Additional Notes
- Post-Processing: Machinable, paintable, and platable.
- EHS: Heavy-metal-free but requires skin protection (isocyanate sensitivity).
Learn more about ABS type materials
- ABS Hei-Cast PU8160 for Vacuum Casting Material
- ABS Axson UP4280 for Vacuum Casting Material
- ABS Axson PX100 for Vacuum Casting Material
- Axson PX215 - Vacuum Casting ABS Material
- Axson PX527 - Vacuum Casting ABS Material
- Axson PX 223/HT - Vacuum Casting ABS Material
- Axson PX 225 / PX 225L - Vacuum Casting ABS Material
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