蓝宝石,片, AlO 99.9, 4mm 直径, 2mm厚

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品牌:	Goodfellow
产地:	英国

索取资料及报价

半岛bd体育手机客户端介绍

Squares, rectangles and discs of non-standard sizes available to special order.

半岛bd体育手机客户端参数

Diameter[直径]	4mm
Orientation[定向/导向]	Not Identified
Polish[抛光]	0.05 - 0.1μm Ra
Surface Finish[表面光洁度]	Polished On Both Sides
Thickness[厚度]	2mm
Type[类型]	Single Crystal
Pultrusion(挤拉成型)
Compressive strength ( MPa )	2100
Mechanical Properties(机械性能)
Hardness - Knoop ( kgf mm?? )	2000
Hardness - Vickers ( kgf mm?? )	1600 - 1800
Tensile modulus ( GPa )	350.00 - 390.00
Tensile strength ( MPa )	250.00 - 400.00
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	5.800 @20-1000℃
Melting point ( C )	2050.00
Specific heat ( J K?? kg?? )	750.0 @25℃
Thermal conductivity ( W m?? K?? )	35.00 - 40.00 @20℃
Upper continuous use temperature ( C )	1800 - 1950
Chemical Resistance(耐化学性)
Acids - concentrated	Good
Acids - dilute	Good
Alkalis	Good
Halogens	Good
Metals	Good
Physical Properties(物理性质)
Apparent porosity ( % )	0.00
Density ( g cm?? )	3.985
Refractive index	1.710-1.790
Useful optical transmission range	200 - 5500 nm
Electrical Properties(电气特性)
Dielectric constant	7.5 - 11.5
Dielectric strength ( kV mm?? )	15.0 - 50.0
Volume resistivity ( Ohmcm )	>10??@25℃

其他参数

公差