These tubes have been biaxially oriented by a process developed by IRC, Leeds University and have axial and hoop strengths which are significantly higher than those of isotropic material.

订货号	包装规格
Length (Round)
906-398-49	100mm
299-803-34	200mm
475-417-53	500mm
624-151-79	680mm

半岛bd体育手机客户端 参数

Colour[颜色]	Yellow
Inside Diameter[内部直径]	57mm
Length[长度]	100mm - 680mm
Outside Diameter[外部直径]	63mm
Structure[结构]	Biaxially Oriented Tube
Wall Thickness[壁厚]	3mm
Physical Properties(物理性质)
Density ( g cm?? )	0.950
Flammability	HB
Limiting oxygen index ( % )	17
Radiation resistance	Fair
Refractive index	1.540
Resistance to Ultra-violet	Poor
Water absorption - over 24 hours ( % )	< 0.010
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	100.000 - 200.000
Heat-deflection temperature - 0.45MPa ( C )	75
Heat-deflection temperature - 1.8MPa ( C )	46.0
Specific heat ( J K?? kg?? )	1900.0
Thermal conductivity ( W m?? K?? )	0.45 - 0.52 @23℃
Upper working temperature ( C )	55 - 120
Electrical Properties(电气特性)
Dielectric constant @1MHz	2 - 2
Dielectric strength ( kV mm?? )	22.0
Dissipation factor @ 1MHz	1.0000 - 10.0000 x 10??
Surface resistivity ( Ohm/sq )	10??
Volume resistivity ( Ohmcm )	10??-10??
Mechanical Properties(机械性能)
Coefficient of friction	0.29
Hardness - Rockwell	D60-73-Shore
Izod impact strength ( J m?? )	20.0 - - 210.0
Poisson's ratio	0.460
Tensile modulus ( GPa )	0.50 - 1.20
Tensile strength ( MPa )	15.00 - 40.00
Chemical Resistance(耐化学性)
Acids - concentrated	Good-Fair
Acids - dilute	Good
Alcohols	Good
Alkalis	Good
Aromatic hydrocarbons	Fair
Greases and Oils	Good-Fair
Halogenated Hydrocarbons	Fair-Poor
Halogens	Fair-Poor
Ketones	Good-Fair

其他参数

公差

外部直径	≤2mm	±0.05mm
	聚合物	±10%
	陶瓷	±10%
	≤5mm	±0.1mm
	聚合物	±10%
	陶瓷	±10%
	>5mm	±5%
	聚合物	±10%
	陶瓷	±10%
壁厚		±10%
	聚合物	±20%
	陶瓷	±20%
长度	<100mm	±1mm
	≥100mm	+5% / -1%