LED applications

R270DHigh-brightness

High-brightness grade with a good balance of optical properties, mechanical strength, and moldability required for reflectors in an LED package.

Application examples

LED reflector

LED reflector

Physical properties table

Units Test method Grade
Grade name R270D
Grade High-brightness
Glass fiber content % ― 15

Optical properties

Post-forming %(460nm) 0.5mmt 98
Thermal aging -170℃ 5hrs %(460nm) 0.5mmt 93
UV light aging UV light 24hrs %(460nm) 0.5mmt 96

Basic physical properties

Specific gravity - ISO 1183 1.68
Water absorption rate(40℃,95%RH, 96hrs) % - 1.6
Water absorption rate (23℃ in water, 24hrs) % ISO 62 0.19
Flammability - UL94 HB

Mechanical properties

Tensile strength MPa ISO 527 47
Tensile elongation % ISO 527 0.8
Flexural strength MPa ISO 178 102
Flexural modulus GPa ISO 178 6.2
the Izod impact value with notch kJ/m2 ISO 179/1eA 1.9

Molding (flow) properties

Bar flow length（320℃/0.5mmt/750kgf） mm - 56 (340℃)

Dimensional properties

Mold shrinkage(2mmt)
:in direction of flow		 % ISO 294-4 0.8
:at right angles to flow % ISO 294-4 1.1
＊Test condition: absolute dry condition
＊ "Halogen free" indicates less than 900-ppm Br, less than 900-ppm CI, and less than 1500-ppm total halogen content (BR, CI)
＊These are standard values and are not specifications which guarantee performance.

Contact us

Kuraray Co., Ltd.
Genestar Division