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Hei-Cast 8570 Vacuum Casting Material
For functional prototypes that require thermal stability beyond what standard resins can offer, Hei-Cast 8015 is the reliable, cost-effective choice. This polyurethane casting resin is specifically formulated to simulate the performance of Heat-Resistant ABS or PBT. While standard resins may soften or warp at temperatures around 80°C, Hei-Cast 8015 maintains its structural integrity up to approximately 105°C. At JUCHENG, we recommend this material for validating household appliances, automotive interior components exposed to sunlight, and industrial enclosures where moderate heat management is required.
Hei-Cast 8570

Basic Characteristics & Composition

Hei-Cast 8015 is a two-component system that balances thermal properties with mechanical toughness.
  • Thermal Stability: It bridges the gap between general-purpose resins and ultra-high-temp specialty resins, handling boiling water temperatures or engine bay ambient heat effectively.
  • ABS Simulation: It replicates the rigidity and impact strength of engineering ABS plastics used in injection molding.
  • Flowability: The low viscosity mixture ensures excellent mold filling, capturing fine textures and ribs without defects.
  • Durability: Offers better impact resistance than some extremely rigid high-temp materials, preventing brittle failure during assembly.
Hei-Cast 8015 prototype

Color Options

  • Standard: Beige / Light Brown (Natural).
  • Finishing: The material cures to a hard, non-porous surface that is ideal for sanding and painting. To achieve specific aesthetic requirements, JUCHENG skilled finishers can apply heat-resistant primers and topcoats.

Key Technical Parameters

1.Mechanical Properties (Typical values):
Property Value Unit Standard
Hardness 80 - 82 Shore D JIS K 7215
Flexural Modulus 2,000 - 2,200 MPa JIS K 7171
Tensile Strength 60 - 65 MPa JIS K 7113
Elongation at Break 10 - 15 % JIS K 7113
Heat Deflection Temp (HDT) 100 - 105 °C JIS K 7191
Impact Strength (Izod) 5 - 7 kJ/m² JIS K 7110
Linear Shrinkage 0.3 - 0.4 % -
2. PROCESSING 
  • Vacuum Casting: Processed under vacuum to ensure a void-free dense part.
  • Pot Life: Approx. 6-8 minutes.
  • Demolding: 60-90 minutes at 60-70°C.
  • Post-Curing: Required. To unlock its heat resistance (105°C), the part must undergo a post-cure cycle in an oven. Without this step, thermal properties will remain similar to standard resins.
3. PRECAUTIONS:
  • Moisture: Polyol component absorbs moisture easily; containers are kept sealed and nitrogen-purged at JUCHENG.
  • Wall Thickness: Consistent wall thickness helps prevent warpage during the thermal post-cure process.
4. STORAGE:
  • Conditions: Store in a cool, dry location (15°C - 25°C).
 

Application Scenarios & Fields

Hei-Cast 8015 is ideal for "warm environment" testing:
  • Household Appliances: Casings for coffee makers, electric kettles, toasters, and hair dryers.
  • Automotive: Interior dashboards, sun visors, air vents (HVAC), and electronics housings near heat sources.
  • Lighting: Lamp housings and bezels that must withstand LED heat.
  • Industrial: Motor covers and machinery guards exposed to operating heat.

Vacuum Casting Process Compatibility

  • Silicone Tooling: Compatible with standard silicone molds.
  • Machining: Cured parts are rigid and machinable. They can be drilled, tapped, and sanded.
  • Surface Treatment: Accepts EMI/RFI shielding paint for electronic applications.

Advantages vs. Limitations

Advantages Limitations
Good Heat Resistance: Stable up to ~105°C. Color: Natural beige color limits use for unpainted aesthetic parts.
Balanced Toughness: Not as brittle as ultra-high-temp resins. Post-Cure: Requires oven time to achieve full properties.
Cost-Effective: Often cheaper than specialized 120°C+ resins. Not Flame Retardant: Does not meet V-0 standards (Use Hei-Cast 8960 for that).
Paintability: Excellent surface for cosmetic finishing.  

Manufacturers & Alternatives

  • Manufacturer: Hei-Cast (H&K Ltd., Japan).
  • Alternatives at JUCHENG:
For higher heat resistance (120°C+): We recommend Hei-Cast 8743 or 8570.
For Black color with heat resistance: We recommend Axson PX 223.
For lower cost (no heat req): We recommend Hei-Cast 3012.
Learn more about ABS type materials
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