订货号	包装规格
Sizes
621-585-96	38 mm x 200 mm
402-666-82	38 mm x 500 mm

半岛bd体育手机客户端 参数

Purity[纯度]	99.9%
Temper[状态]	As Rolled
Thickness[厚度]	0.2mm
Typical Analysis(典型分析)
Al	5 PPM
Ca	10 PPM
Cl	40 PPM
Fe	50 PPM
K	60 PPM
N	40 PPM
Na	80 PPM
Si	10 PPM
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	56.000 @0-100℃
Latent heat of evaporation ( J g?? )	19600
Latent heat of fusion ( J g?? )	422.00
Melting point ( C )	180.50
Specific heat ( J K?? kg?? )	3560.0 @25℃
Thermal conductivity ( W m?? K?? )	84.80 @0-100℃
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )	9.29@20℃
Temperature coefficient ( K?? )	0.00435 @0-100℃
Thermal emf against Pt (cold 0C - hot 100C) ( mV )	1.82
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Polycrystalline )	11.1
Hardness - Vickers ( kgf mm?? ) ( Polycrystalline )	< 5
Material condition	Polycrystalline
Poisson's ratio ( Polycrystalline )	0.360
Tensile modulus ( GPa ) ( Polycrystalline )	4.91
Atomic Properties(原子属性)
Atomic number	3
Atomic weight ( amu )	6.94100
Crystal structure	Body Centred Cubic
Electronic structure	He2s?
Ionisation potential ( No./eV )	2 / 75.6
Ionisation potential ( No./eV )	3 / 122.4
Ionisation potential ( No./eV )	1 / 5.39
Natural isotope distribution ( Mass No./% )	6 / 7.5
Natural isotope distribution ( Mass No./% )	7 / 92.5
Photo-electric work function ( eV )	2.40
Thermal neutron absorption cross-section ( Barns )	63.0000
Valences shown	1
Physical Properties(物理性质)
Boiling point ( C )	1342
Density ( g cm?? )	0.534 @20℃

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%

腐蚀

与其接触时可破坏活组织的化学品。