Optical Grade.

订货号	包装规格
Sizes
203-112-54	25mm x 25mm

半岛bd体育手机客户端 参数

Purity[纯度]	99.999%
Structure[结构]	Polycrystalline
Thickness[厚度]	1mm
Typical Analysis(典型分析)
Al	<1 PPM
Ba	<2 PPM
Bi	<2 PPM
Ca	<1 PPM
Cd	<1 PPM
Cu	<1 PPM
Physical Properties(物理性质)
Boiling point ( C )	2355
Density ( g cm?3 )	2.340 @20℃
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Polycrystalline )	100.0
Hardness - Mohs ( Polycrystalline )	7.00
Material condition	Polycrystalline
Poisson's ratio ( Polycrystalline )	0.420
Tensile modulus ( GPa ) ( Polycrystalline )	113.00
Atomic Properties(原子属性)
Atomic number	14
Atomic weight ( amu )	28.08550
Crystal structure	Diamond
Electronic structure	Ne3s23p2
Ionisation potential ( No./eV )	5 / 167
Ionisation potential ( No./eV )	1 / 8.15
Ionisation potential ( No./eV )	2 / 16.3
Ionisation potential ( No./eV )	3 / 33.5
Ionisation potential ( No./eV )	4 / 45.1
Ionisation potential ( No./eV )	6 / 205
Natural isotope distribution ( Mass No./% )	30 / 3.10
Natural isotope distribution ( Mass No./% )	29 / 4.67
Natural isotope distribution ( Mass No./% )	28 / 92.23
Photo-electric work function ( eV )	4.20
Thermal neutron absorption cross-section ( Barns )	0.1600
Valences shown	4
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )	23x101?@20℃
Thermal emf against Pt (cold 0C - hot 100C) ( mV )	-41.56
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?1 )	4.700 - 7.600 @0-100℃
Latent heat of evaporation ( J g?1 )	13700
Latent heat of fusion ( J g?1 )	1650.00
Melting point ( C )	1410.00
Specific heat ( J K?1 kg?1 )	703.0 @25℃
Thermal conductivity ( W m?1 K?1 )	80.00 - 150.00 @0-100℃

其他参数

公差

长度	<100mm	±1mm
	≥100mm	+2% / -1%
直径	<100mm	±1mm
	≥100mm	+2% / -1%
厚度		±10%
	陶瓷	±20%
	复合材料	±20%
	聚合物	±20%
长度 1	<100mm	±1mm
	≥100mm	+2% / -1%
长度 2	<100mm	±1mm
	≥100mm	+2% / -1%