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聚四氟乙烯,球体, PTFE, 3.18mm直径
聚四氟乙烯,球体, PTFE, 3.18mm直径图片
品牌: Goodfellow
产地: 英国
索取资料及报价
品牌:Goodfellow
产地:英国
产品介绍
订货号包装规格
949-167-1750 Piece
645-892-37100 Piece
736-538-02200 Piece
067-260-45500 Piece

产品参数

Diameter[直径]3.18mm
Quantity[数量]50 Piece - 500 Piece
Sphericity[球面]25μm
Type[类型]Precision Sphere
Mechanical Properties(机械性能)
Coefficient of friction0.05 - 0.20
Elongation at break ( % )400.0
Hardness - RockwellD50-55-Shore
Izod impact strength ( J m⁻¹ )160.0
Poisson's ratio0.460
Tensile modulus ( GPa )0.30 - 0.80
Tensile strength ( MPa )10.00 - 40.00
Chemical Resistance(耐化学性)
Acids - concentratedGood
Acids - diluteGood
AlcoholsGood
AlkalisGood
Aromatic hydrocarbonsGood
Greases and OilsGood
Halogenated HydrocarbonsGood
HalogensGood
KetonesGood
Physical Properties(物理性质)
Density ( g cm⁻³ )2.200
FlammabilityV-0
Limiting oxygen index ( % )95
Radiation resistancePoor
Refractive index1.380
Resistance to Ultra-violetExcellent
Water absorption - over 24 hours ( % )0.010
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ )100.000 - 160.000
Heat-deflection temperature - 0.45MPa ( C )120
Heat-deflection temperature - 1.8MPa ( C )54.0
Lower working temperature ( C )-260
Specific heat ( J K⁻¹ kg⁻¹ )1000.0
Thermal conductivity ( W m⁻¹ K⁻¹ )0.25 @23℃
Upper working temperature ( C )180 - 260
Electrical Properties(电气特性)
Dielectric constant @1MHz2 - 2
Dielectric strength ( kV mm⁻¹ )50.0 - 170.0
Dissipation factor @ 1MHz0.0003 - 0.0007
Surface resistivity ( Ohm/sq )10¹⁷
Volume resistivity ( Ohmcm )10¹⁸-10¹⁹

其他参数

公差

直径±5%
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