订货叶�/strong>	包装规格
Sizes
251-045-74	100 mm x 100 mm
414-305-18	300 mm x 300 mm

产品参数

Thickness[厚度]	3mm
Physical Properties(物理性质)
Density ( g cm?? )	1.140
Flammability	HB
Limiting oxygen index ( % )	23
Radiation resistance	Fair
Refractive index	1.530
Resistance to Ultra-violet	Poor
Water absorption ( % )	8.50
Water absorption - equilibrium ( % )	8.00
Water absorption - over 24 hours ( % )	2.300
Electrical Properties(电气特�?
Dielectric constant @1MHz	3
Dielectric strength ( kV mm?? )	25.0
Dissipation factor @ 1kHz	0.2000
Surface resistivity ( Ohm/sq )	10??
Volume resistivity ( Ohmcm )	10??
Mechanical Properties(机械性能)
Abrasive resistance - ASTM D1044 ( mg/1000 cycles )	3 - 5
Coefficient of friction	0.20 - 0.30
Elongation at break ( % )	40.0
Hardness - Rockwell	M89
Izod impact strength ( J m?? )	40.0 - 110.0
Poisson's ratio	0.410
Tensile modulus ( GPa )	3.30
Tensile strength ( MPa )	82.00
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	90.000
Heat-deflection temperature - 0.45MPa ( C )	200
Heat-deflection temperature - 1.8MPa ( C )	100.0
Lower working temperature ( C )	-30
Specific heat ( J K?? kg?? )	1670.0
Thermal conductivity ( W m?? K?? )	0.25 @23ℂ�/td>
Upper working temperature ( C )	80 - 180
Chemical Resistance(耐化学�?
Acids - concentrated	Poor
Acids - dilute	Poor
Alcohols	Good
Alkalis	Good-Fair
Aromatic hydrocarbons	Good
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Poor
Ketones	Good

其他参数

公差

长度	<100mm	��1mm
	�?00mm	+2% / -1%
直径	<100mm	��1mm
	�?00mm	+2% / -1%
厚度		��10%
	陶瓷	��20%
	复合材料	��20%
	聚合�?/td>	��20%
长度 1	<100mm	��1mm
	�?00mm	+2% / -1%
长度 2	<100mm	��1mm
	�?00mm	+2% / -1%