订货号	包装规格
Length (Round)
028-874-43	50 mm
179-222-70	100 mm

半岛bd体育手机客户端 参数

Diameter[直径]	3.2mm
Length[长度]	50 mm - 100 mm
Purity[纯度]	99.95%
Temper[状态]	Hard
Typical Analysis(典型分析)
Al	20 PPM
Ca	100 PPM
Cr	5 PPM
Cu	2 PPM
Fe	10 PPM
Mg	1 PPM
Mn	<1 PPM
Ni	50 PPM
Si	2 PPM
Yb	5 PPM
Atomic Properties(原子属性)
Atomic number	21
Atomic weight ( amu )	44.95590
Crystal structure	Hexagonal Close Packed
Electronic structure	Ar3d?4s?
Ionisation potential ( No./eV )	3 / 24.8
Ionisation potential ( No./eV )	5 / 91.7
Ionisation potential ( No./eV )	4 / 73.5
Ionisation potential ( No./eV )	6 / 111
Ionisation potential ( No./eV )	1 / 6.54
Ionisation potential ( No./eV )	2 / 12.8
Photo-electric work function ( eV )	3.50
Thermal neutron absorption cross-section ( Barns )	25.0000
Valences shown	3
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Hard )	44.2
Bulk modulus ( GPa ) ( Soft )	44.2
Hardness - Brinell ( Hard )	136
Hardness - Brinell ( Soft )	78
Material condition	Soft
Material condition	Hard
Poisson's ratio ( Hard )	0.270
Poisson's ratio ( Soft )	0.270
Tensile modulus ( GPa ) ( Hard )	79.30
Tensile modulus ( GPa ) ( Soft )	79.30
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )	66@20℃
Temperature coefficient ( K?? )	0.00282 @0-100℃
Physical Properties(物理性质)
Boiling point ( C )	2831
Density ( g cm?? )	2.990 @20℃
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? )	12.000 @0-100℃
Latent heat of evaporation ( J g?? )	7293
Latent heat of fusion ( J g?? )	357.00
Melting point ( C )	1541.00
Specific heat ( J K?? kg?? )	557.0 @25℃
Thermal conductivity ( W m?? K?? )	15.80 @0-100℃

其他参数

公差

直径	≤10mm	±10%
	聚合物	+20% / -10%
	陶瓷	+20% / -10%
	>10mm	±5%
	陶瓷	+20% / -10%
	聚合物	+20% / -10%
长度	<100mm	±1mm
	≥100mm	+5% / -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。