订货号	包装规格
Sizes
387-657-73	25mm x 25mm
827-926-59	50mm x 50mm

半岛bd体育手机客户端 参数

Purity[纯度]	99.0%
Temper[状态]	As Rolled
Thickness[厚度]	0.025mm
Atomic Properties(原子属性)
Atomic number	71
Atomic weight ( amu )	174.96700
Crystal structure	Hexagonal Close Packed
Electronic structure	Xe4f??5d?6s?
Ionisation potential ( No./eV )	1 / 5.43
Ionisation potential ( No./eV )	2 / 13.9
Natural isotope distribution ( Mass No./% )	175 / 97.4
Natural isotope distribution ( Mass No./% )	176 / 2.6
Photo-electric work function ( eV )	3.30
Thermal neutron absorption cross-section ( Barns )	75.0000
Valences shown	3
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	12.500 @0-400℃
Latent heat of evaporation ( J g?? )	2155
Latent heat of fusion ( J g?? )	110.00
Melting point ( C )	1663.00
Specific heat ( J K?? kg?? )	155.0 @25℃
Thermal conductivity ( W m?? K?? )	16.40 @0-100℃
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Polycrystalline )	42.0
Hardness - Vickers ( kgf mm?? ) ( Polycrystalline )	85
Material condition	Polycrystalline
Poisson's ratio ( Polycrystalline )	0.223
Tensile modulus ( GPa ) ( Polycrystalline )	84.00
Physical Properties(物理性质)
Boiling point ( C )	3395
Density ( g cm?? )	9.842 @20℃
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )	68@20℃
Superconductivity critical temperature ( K )	0.1000
Temperature coefficient ( K?? )	0.00240 @0-100℃

其他参数

公差

长度	<100mm	±1mm
	≥100mm	+2% / -1%
直径	<100mm	±1mm
	≥100mm	+2% / -1%
厚度	<0.01mm	±25%
	≤0.05mm	±15%
	>0.05mm	±10%
长度 1	<100mm	±1mm
	≥100mm	+2% / -1%
长度 2	<100mm	±1mm
	≥100mm	+2% / -1%

易燃

与火焰接触后点燃的化学品，或与水接触后逸出高度易燃气体的化学品。