Covestro Makrolon® Rx1851 PC Resin
Makrolon Rx1851 PC Resin Medical Devices
Makrolon Rx1851 is a medical-grade, transparent polycarbonate resin designed for injection molding. With low viscosity (23 cm³/10min MVR) and excellent flow, it ensures easy processing and release, ideal for complex medical devices requiring precision, clarity, and compliance.
Associated Documents
ISO TDS
Typical property data
Physical Properties (Rheological)
- Melt Volume-Flow Rate (MVR): 23 cm³/10 min (300 °C/1.2 kg, ISO 1133)
- Melt Mass-Flow Rate (MFR): 24 g/10 min (300 °C/1.2 kg, ISO 1133)
- Molding Shrinkage (Parallel/Normal): 0.5–0.7% (ISO 2577)
Mechanical Properties (23 °C/50 % r.h.)
- Tensile Modulus: 2400 MPa (1 mm/min, ISO 527-1,-2)
- Yield Stress: 65 MPa (50 mm/min, ISO 527-1,-2)
- Yield Strain: 6.0% (50 mm/min, ISO 527-1,-2)
- Stress at Break: 70 MPa (50 mm/min, ISO 527-1,-2)
- Strain at Break: 120% (50 mm/min, ISO 527-1,-2)
- Flexural Modulus: 2400 MPa (2 mm/min, ISO 178)
- Flexural Strength: 98 MPa (2 mm/min, ISO 178)
- Izod Notched Impact Strength (23 °C): 65 kJ/m² (ISO 21305/ISO 180/A)
- Izod Notched Impact Strength (-30 °C): 12 kJ/m² (ISO 21305/ISO 180/A)
- Puncture Impact Force (23 °C): 5200 N (ISO 6603-2)
- Puncture Impact Energy (23 °C): 55 J (ISO 6603-2)
Thermal Properties
- Deflection Temperature Under Load:
- 121 °C (1.80 MPa, ISO 75-1,-2)
- 134 °C (0.45 MPa, ISO 75-1,-2)
- Vicat Softening Temperature:
- 141 °C (50 N, 50 °C/h, ISO 306)
- Coefficient of Linear Thermal Expansion: 0.65 × 10⁻⁴/K (23–55 °C, ISO 11359-1,-2)
- Thermal Conductivity: 0.20 W/(m·K) (23 °C, ISO 8302)
- Oxygen Index: 27% (Method A, ISO 4589-2)
- Flash Ignition Temperature: 480 °C (ASTM D1929)
- Self-Ignition Temperature: 550 °C (ASTM D1929)
Other Properties (23 °C)
- Density: 1200 kg/m³ (ISO 1183-1)
- Water Absorption (Saturation): 0.30% (23 °C, ISO 62)
- Water Absorption (Equilibrium): 0.12% (23 °C, 50% r.h., ISO 62)
Processing and Drying Conditions
- Melt Temperature: 280–320 °C
- Mold Temperature: 80–120 °C
- Drying Temperature: 120 °C
- Drying Time: 2–3 hours
- Maximum Moisture Content: ≤ 0.02%
Features & Benefits
Medical-Grade Compliance
Certified for medical applications, Rx1851 meets ISO standards for biocompatibility and sterilization. Ensures safety in surgical tools, IV components, and diagnostic housings.
Effortless Injection Molding
Low melt viscosity (23 cm³/10min) enables smooth filling of intricate molds. Reduces cycle times and energy costs while minimizing warpage in thin-walled parts.
Robust & Transparent Performance
It combines 65 MPa yield strength, 120% elongation at break, and 121°C heat resistance with optical clarity. Perfect for durable, sterilizable medical enclosures.
Use & Applications
- Medical Devices: Surgical instrument housings, Transposable IV connectors, Diagnostic equipment covers, Sterilization trays
- Injection Molding: Thin-walled medical components, High-clarity technical parts