描述
PLEXIGLAS Heatresist hw55 clear High Heat Clear PMMA AMECA Listed
Material: MMA Copolymer
Vicat: 119°C
HDT (0.45 MPa): 109°C
AMECA: Listed
Packing: 25kg bags
PLEXIGLAS Heatresist hw55 clear is a high-performance MMA copolymer offering the highest heat resistance and mechanical strength in the PLEXIGLAS Heatresist series. With a Vicat softening temperature of 119°C (B/50), HDT of 109°C at 0.45 MPa, and tensile modulus of 3600 MPa, this grade delivers exceptional thermal stability and rigidity for demanding optical and technical applications. AMECA listed, it combines high heat resistance with 90% light transmission, refractive index of 1.51, and excellent weatherability.
PLEXIGLAS Heatresist hw55 clear offers stress at break of 80 MPa, Charpy impact strength of 20 kJ/m², and good flow with MVR of 1.2 cm³/10min at 230°C/3.8kg. Its improved resistance to stress cracking and optimized inherent color make it ideal for high-precision optical components. Processable on injection molding machines with 3-zone general purpose screws for thermoplastics at melt temperature 220-250°C and mold temperature 60-90°C. Typical applications include lighted keys, luminaire covers, fiber optics, and technical injection-molded items requiring high heat resistance and optical clarity.
Genuine Röhm PLEXIGLAS Imported Stock and Technical Support
We supply stable spot inventory of genuine PLEXIGLAS Heatresist hw55 clear high heat molding compound. Official TDS, batch COA, and AMECA documentation are available for high-temperature optical and technical injection molding applications.
Request PLEXIGLAS Heatresist hw55 clear Quotation, TDS, and Sample
Complete TDS, COA, and technical documentation available
Core Advantages of PLEXIGLAS Heatresist hw55 clear
- Highest heat resistance: Vicat 119°C — the highest in the Heatresist series
- Highest HDT: 109°C (0.45 MPa) — superior dimensional stability under load
- Highest rigidity: 3600 MPa — maximum mechanical strength
- Highest refractive index: 1.51 — superior optical performance
- High strength: 80 MPa — excellent mechanical properties
- AMECA listed — certified for automotive regulatory compliance
- Improved stress cracking resistance — reliable performance in harsh environments
- Optimized inherent color — excellent optical clarity
Main Applications
- Lighted keys — illuminated keys and buttons requiring heat resistance and clarity
- Luminaire covers — lighting fixtures exposed to high temperatures
- Fiber optics — optical fiber components requiring high refractive index
- Technical injection-molded items — precision optical and technical components
Full Technical Parameters
| Property | Typical Value | Test Method |
| Material Type | MMA copolymer | — |
| Density | 1.19 g/cm³ | ISO 1183 |
| Tensile Modulus (1mm/min) | 3600 MPa | ISO 527 |
| Stress at Break (5mm/min) | 80 MPa | ISO 527 |
| Strain at Break (5mm/min) | 3.5% | ISO 527 |
| Charpy Impact Strength (23°C) | 20 kJ/m² | ISO 179/1eU |
| Vicat Softening Temperature (B/50) | 119°C | ISO 306 |
| Glass Transition Temperature | 122°C | ISO 11357 |
| HDT (0.45 MPa) | 109°C | ISO 75 |
| HDT (1.8 MPa) | 106°C | ISO 75 |
| CTE (0-50°C) | 7 × 10⁻⁵ /K | ISO 11359 |
| MVR (230°C/3.8kg) | 1.2 cm³/10min | ISO 1133 |
| Luminous Transmittance (d=3mm) | 90% | ISO 13468-2 |
| Refractive Index (589nm/23°C) | 1.51 | ISO 489 |
| Water Absorption (saturation, 23°C) | 2.2% | ISO 62 |
| Humidity Absorption (23°C/50% RH) | 0.6% | ISO 62 |
| Flammability (UL 94, 1.5mm) | HB | IEC 60695-11-10 |
| AMECA Listing | Yes | — |
Note: All listed figures are typical values and may vary by production batch. Complete independent qualification testing is required before mass production deployment.
Recommended Processing Conditions
| Parameter | Recommended Value |
| Processing Method | Injection Molding |
| Predrying Temperature | ≤109°C |
| Predrying Time (Desiccant Dryer) | 2-3 hours |
| Melt Temperature | 220-250°C |
| Mold Temperature (Injection Molding) | 60-90°C |
| Screw Type | 3-zone general purpose screw for thermoplastics |
Handling and Storage Recommendations
| Storage Rules | Store in dry, cool conditions away from direct sunlight and heat sources. |
| Packaging | 25kg two-ply polyethylene bags. |
| Predrying | Dry at ≤109°C for 2-3 hours before processing. Good predrying is essential for optimal results. |
| Operation Protection | Follow standard safety practices for handling thermoplastic pellets. Use appropriate PPE during processing. |
Official Technical Documentation
| Document Type | Document Introduction | Document Request |
| TDS | PLEXIGLAS Heatresist hw55 clear original factory technical data sheet | Request TDS |
| COA | Batch-specific certificate of analysis | Request COA |
Frequently Asked Questions
What is PLEXIGLAS Heatresist hw55 clear?
PLEXIGLAS Heatresist hw55 clear is a high-heat MMA copolymer offering the highest Vicat (119°C), highest HDT (109°C), highest tensile modulus (3600 MPa), and AMECA listing for demanding optical and technical injection molding applications.
What is the heat deflection temperature of PLEXIGLAS Heatresist hw55 clear?
PLEXIGLAS Heatresist hw55 clear has a Vicat softening temperature of 119°C (B/50) and HDT of 109°C at 0.45 MPa — the highest in the Heatresist series for superior thermal stability.
What is the difference between PLEXIGLAS Heatresist hw55 clear and FT15?
hw55 clear offers higher heat resistance (Vicat 119°C vs 115°C), higher rigidity (3600 MPa vs 3500 MPa), higher strength (80 MPa vs 50 MPa), higher refractive index (1.51 vs 1.502), and AMECA listing, while FT15 has better flow (MVR 4.5 vs 1.2).
What applications is PLEXIGLAS Heatresist hw55 clear suitable for?
PLEXIGLAS Heatresist hw55 clear is ideal for lighted keys, luminaire covers, fiber optics, and technical injection-molded items requiring high heat resistance, optical clarity, and AMECA compliance.
What are the processing conditions for PLEXIGLAS Heatresist hw55 clear?
Recommended conditions: predrying at ≤109°C for 2-3 hours, melt temperature 220-250°C, mold temperature 60-90°C. Use injection molding machines with 3-zone general purpose screws for thermoplastics.
What is the light transmission of PLEXIGLAS Heatresist hw55 clear?
PLEXIGLAS Heatresist hw55 clear offers 90% luminous transmittance with a refractive index of 1.51, providing excellent optical clarity while delivering the highest heat resistance in the Heatresist series.
Is PLEXIGLAS Heatresist hw55 clear AMECA listed?
Yes. PLEXIGLAS Heatresist hw55 clear is AMECA listed, making it suitable for automotive and lighting applications requiring regulatory compliance.
Related PLEXIGLAS Products
Compare PLEXIGLAS molding compounds for different application requirements.
| Product | Vicat B/50 | Tensile Modulus | Refractive Index | AMECA | Core Application |
| hw55 clear | 119°C | 3600 MPa | 1.51 | ✅ | Highest heat optical molding |
| Heatresist FT15 | 115°C | 3500 MPa | 1.502 | — | High heat injection molding |
| PLEXIGLAS 8N | 108°C | 3300 MPa | 1.49 | ✅ | Maximum heat injection molding |
Get PLEXIGLAS Heatresist hw55 clear Bulk Pricing and Technical Support
We supply genuine PLEXIGLAS Heatresist hw55 clear high heat molding compound for lighted keys, luminaire covers, fiber optics, and high-temperature optical injection molding applications. Contact us for bulk pricing, sample availability, technical documents, and application support.
Request PLEXIGLAS Heatresist hw55 clear Technical Details
Disclaimer: All technical data on this page are for general guidance only and are not product specifications. Buyers must carry out independent trials and verify suitability before bulk ordering. Actual values may vary between production lots.
