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| Brand Name : | HMT | 
| Certification : | ISO 9001, ISO 14001, RoHS/REACH | 
| Price : | Negotiable | 
| Delivery Time : | 7-15 working days | 
| Payment Terms : | L/C,D/A,D/P,T/T,Western Union,MoneyGram | 
High-Performance Moisture-Proof Light Diffusing Polycarbonate for Wet Environment Luminaires
Light Diffusion PC product models in the LED lighting field
| Physical property | Standard | Value | Unit | 
| Density 23ºC | ASTM D792 | 1.19 | g/cm3 | 
| Shrinkage 23°C | ASTM D955 | 0.5~0.7 | % | 
| Melt Index 260°C 2.16kg | ASTM D1238 | 19 | g/10min | 
| Mechanical behavior | Standard | Value | Unit | 
| Tensile Strength 50mm/min | ASTM D638 | 60 | MPa | 
| Elongation Break 50mm/min | ASTM D638 | 50 | % | 
| Flexural Strength 2.0mm/min | ASTM D790 | 90 | MPa | 
| Flexural Modulus 2.0mm/min | ASTM D790 | 2600 | MPa | 
| lzod Notch lmpact 23ºC 3.2mm | ASTM D256 | 51.02 | kJ/m2 | 
| lzod Notch lmpact -10ºC 3.2mm | ASTM D256 | 37.75 | kJ/m2 | 
| Thermal | Standard | Value | Unit | 
| HDT 0.45MPa 6.4mm | ASTM D648 | 95 | ºC | 
| HDT1.8MPa 6.4mm | ASTM D648 | 84 | ºC | 
Production Description:
Advanced PC formulations address virgin material limitations through molecular reinforcement and nano-additives. Post-modification, the material achieves UL94 V-0 flammability ratings without sacrificing 150°C HDT, while resolving environmental stress cracking in fuel/ethanol exposures. Ideal for EV battery housings and surgical instrument handles requiring chemical/thermal duality.
Tailored Performance: Balances transparency, strength, and processability for niche uses.
Cost Reduction: Blends like PC/ABS lower material costs while maintaining core properties.
Durability: Enhanced UV, chemical, and thermal stability for harsh environments.
Regulatory Compliance: Meets flame safety (UL94), food contact (FDA), and medical standards.
A: Bulb Lamp Cover Series (Light Transmittance 90% - 98%, Beam Angle 150° - 230°)

B: T-Bulb Lamp Cover Series (Light Transmittance 86% - 96%, Beam Angle 150° - 200°)

C. BR Lamp/PAR Lamp/Spotlight Cover Series (Light Transmittance 88% - 94%)

D. Taper/Candle Bulb Cover Series (Light Transmittance 85% - 95%)

E. Ceiling Lights and Various Lamps Series (Light Transmittance 80% - 92%)

F. Tube Light Series (T8 Tubes, Dual-Color Tubes) (Light Transmittance 80% - 96%)

Company Profile





HMT International is a leading global manufacturer and exporter specializing in modified plastics, operating under the brand Chongyuan. Established with a commitment to innovation and sustainability, we engineer high-performance thermoplastic compounds tailored to meet the evolving demands of industries worldwide.
Certified to ISO 9001, ISO 14001, and compliant with RoHS/REACH standards, we align our operations with global sustainability goals while delivering exceptional technical support and supply chain reliability.
3,000+ customized formulations.
500,000+ MT annual production capacity.
25+ years of polymer expertise.
ISO 9001 & ISO 14001 certified facilities.
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| Company Info. | 
| Xiamen HMT International Trade Co., Ltd | 
| Verified Supplier | 
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