Makrolon Gray sheet delivers robust optical clarity and long term durability for demanding glazing applications. Engineered for architectural reuse, this polycarbonate sheet combines light transmission with impact resistance.
Design teams favor Makrolon Gray for its weatherability, simplified handling, and reduced lifetime maintenance. The following sections outline core properties, processing guidance, and real world performance expectations.
| Specification | Metric | Unit | Notes |
|---|---|---|---|
| Sheet thickness | 2.0–6.0 | mm | Common grades for roofing and façade |
| Light transmission (3 mm) | 85 | % | Measured at 400–700 nm visible range |
| Impact performance | 250 | J | Charpy pendulum test at 23 °C |
| Service temperature | -40 | °C to +115 | Short term exposure limits |
| UV stability | 10 | years | Estimated retention under standard climates |
Material behavior under load
Makrolon Gray sheet exhibits high flexural strength, allowing longer spans with reduced secondary framing. Designers should verify deflection limits for specific roof or wall configurations.
Processing and fabrication guidelines
Thermoplastic forming is feasible with Makrolon Gray, yet strict control of temperature and tooling prevents surface defects. Use vacuum forming or hot wire bending within recommended ranges to avoid craze formation.
- Limit heating to manufacturer recommended temperatures
- Use coated tooling to reduce sticking and mark formation
- Maintain clean working environments to prevent contamination
Weather resistance and UV protection
Makrolon Gray incorporates UV stabilization layers that minimize yellowing and maintain light transmission over extended exposure. In coastal or industrial atmospheres, verify chemical compatibility with sealing materials.
Mechanical fasteners should follow spacing tables to avoid stress concentrations that could lead to fracture under cyclic loading or thermal movement.
Fire performance and regulations
Depending on thickness and backing layers, Makrolon Gray can meet regional fire classification requirements. Confirm local building code acceptance and select compatible fire retardant treatments where necessary.
Key specifications for Makrolon Gray sheet selection
- Confirm thickness and width against project load and span tables
- Verify light transmission and glare control for interior comfort
- Check fire classification for local code compliance
- Plan edge protection and sealing to preserve long term performance
FAQ
Reader questions
Can Makrolon Gray sheet replace glass in skylights?
Yes, its impact resistance and light transmission make it suitable for skylight glazing, provided deflection calculations and thermal movement joints are addressed.
How does temperature cycling affect dimensional stability?
Thermal expansion is higher than glass, so profiles and fixings must allow movement to avoid warping or stress induced distortion over time.
Is Makrolon Gray suitable for food processing environments?
Approved versions comply with food contact regulations, but surface finish and cleaning protocols should align with hygiene standards to avoid contamination. Warranty length varies by project type and geography, typically covering discoloration and mechanical defects under defined installation conditions.