One piece only remaining.

订货号	包装规格
Disc
741-977-83	60mm

半岛bd体育手机客户端 参数

Diameter[直径]	60mm
Purity[纯度]	99.97%
Thickness[厚度]	25mm
Typical Analysis(典型分析)
Ag	1 PPM
Al	5 PPM
Ca	4 PPM
Cd	5 PPM
Co	1 PPM
Cr	200 PPM
Cu	8 PPM
Fe	7 PPM
Mg	1 PPM
Mn	1 PPM
Mo	10 PPM
Na	2 PPM
Si	2 PPM
Sn	5 PPM
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )	117@20℃
Temperature coefficient ( K?? )	0.00460 @0-100℃
Thermal emf against Pt (cold 0C - hot 100C) ( mV )	-7.34
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Polycrystalline )	31.3
Hardness - Vickers ( kgf mm?? ) ( Polycrystalline )	16 - 19
Material condition	Polycrystalline
Poisson's ratio ( Polycrystalline )	0.330
Tensile modulus ( GPa ) ( Polycrystalline )	34.00
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	13.400 @0-100℃
Latent heat of evaporation ( J g?? )	857
Latent heat of fusion ( J g?? )	52.00
Melting point ( C )	271.30
Specific heat ( J K?? kg?? )	124.0 @25℃
Thermal conductivity ( W m?? K?? )	7.90 @0-100℃
Atomic Properties(原子属性)
Atomic number	83
Atomic weight ( amu )	208.98040
Crystal structure	Rhombohedral
Electronic structure	Xe4f??5d??6s?6p?
Ionisation potential ( No./eV )	5 / 56.0
Ionisation potential ( No./eV )	1 / 7.29
Ionisation potential ( No./eV )	3 / 25.6
Ionisation potential ( No./eV )	4 / 45.3
Ionisation potential ( No./eV )	6 / 88.3
Ionisation potential ( No./eV )	2 / 16.7
Photo-electric work function ( eV )	4.40
Thermal neutron absorption cross-section ( Barns )	0.0340
Valences shown	3 , 5
Physical Properties(物理性质)
Boiling point ( C )	1560
Density ( g cm?? )	9.800 @20℃

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%