订货叶�/strong>	包装规格
408-203-52	150mm x 150mm

产品参数

Purity[纯度]	99.2%
Temper[状态]	Annealed
Thickness[厚度]	7mm
Typical Analysis(典型分析)
C	250 PPM
Cr	200 PPM
Fe	200 PPM
H	10 PPM
Hf	2500 PPM
N	100 PPM
O	1000 PPM
Atomic Properties(原子属�?
Atomic number	40
Atomic weight ( amu )	91.22000
Crystal structure	Hexagonal Close Packed
Electronic structure	Kr4d?5s?
Ionisation potential ( No./eV )	4 / 34.34
Ionisation potential ( No./eV )	6 / 99
Ionisation potential ( No./eV )	2 / 13.13
Ionisation potential ( No./eV )	1 / 6.84
Ionisation potential ( No./eV )	5 / 81.5
Ionisation potential ( No./eV )	3 / 22.99
Natural isotope distribution ( Mass No./% )	96 / 2.8
Natural isotope distribution ( Mass No./% )	92 / 17.1
Natural isotope distribution ( Mass No./% )	91 / 11.2
Natural isotope distribution ( Mass No./% )	94 / 17.5
Natural isotope distribution ( Mass No./% )	90 / 51.4
Photo-electric work function ( eV )	3.80
Thermal neutron absorption cross-section ( Barns )	0.1820
Valences shown	2 ,3,4
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Polycrystalline )	89.8
Bulk modulus ( GPa ) ( Soft )	89.8
Hardness - Vickers ( kgf mm?? ) ( Soft )	85 - 100
Material condition	Polycrystalline
Material condition	Soft
Poisson's ratio ( Polycrystalline )	0.380
Poisson's ratio ( Soft )	0.380
Tensile modulus ( GPa ) ( Polycrystalline )	98.00
Tensile modulus ( GPa ) ( Soft )	98.00
Tensile strength ( MPa ) ( Soft )	350.00 - 390.00
Yield strength ( MPa ) ( Soft )	250.0 - 310.0
Electrical Properties(电气特�?
Electrical resistivity ( μOhmcm )	44@20ℂ�/td>
Superconductivity critical temperature ( K )	0.6100
Temperature coefficient ( K?? )	0.00440 @0-100ℂ�/td>
Thermal emf against Pt (cold 0C - hot 100C) ( mV )	1.17
Physical Properties(物理性质)
Boiling point ( C )	4377
Density ( g cm?? )	6.490 @20ℂ�/td>
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	5.900 @0-100ℂ�/td>
Latent heat of evaporation ( J g?? )	6360
Latent heat of fusion ( J g?? )	211.00
Melting point ( C )	1852.00
Specific heat ( J K?? kg?? )	281.0 @25ℂ�/td>
Thermal conductivity ( W m?? K?? )	22.70 @0-100ℂ�/td>

其他参数

公差

长度	<100mm	��1mm
	�?00mm	+2% / -1%
直径	<100mm	��1mm
	�?00mm	+2% / -1%
厚度	<0.01mm	��25%
	�?.05mm	��15%
	>0.05mm	��10%
长度 1	<100mm	��1mm
	�?00mm	+2% / -1%
长度 2	<100mm	��1mm
	�?00mm	+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、�/p>