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钨,棒, W, 8mm直径
钨,棒, W, 8mm直径图片
品牌: Goodfellow
纯度含量: 99.95%
产地: 英国
索取资料及报价
品牌: Goodfellow
纯度含量: 99.95%
产地: 英国
半岛bd体育手机客户端 介绍
订货号 包装规格
Length (Round)
443-503-76 50 mm
182-888-38 100 mm
917-591-46 200 mm
219-107-00 500 mm

半岛bd体育手机客户端 参数

Diameter[直径] 8mm
Length[长度] 50 mm - 500 mm
Production Method[生产方法] Centreless Ground
Purity[纯度] 99.95%
Typical Analysis(典型分析)
C 30 PPM
Ca <20 PPM
Cu <20 PPM
Fe 20 PPM
H 6 PPM
Mg <10 PPM
Mo 150 PPM
N 10 PPM
Ni <20 PPM
O 30 PPM
Pb <50 PPM
Si <50 PPM
Sn <30 PPM
Ti <20 PPM
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Hard ) 311.0
Bulk modulus ( GPa ) ( Soft ) 311.0
Hardness - Vickers ( kgf mm?? ) ( Hard ) 500
Hardness - Vickers ( kgf mm?? ) ( Soft ) 360
Material condition Soft
Material condition Hard
Poisson's ratio ( Hard ) 0.280
Poisson's ratio ( Soft ) 0.280
Tensile modulus ( GPa ) ( Hard ) 411.00
Tensile modulus ( GPa ) ( Soft ) 411.00
Tensile strength ( MPa ) ( Hard ) 1920.00
Tensile strength ( MPa ) ( Soft ) 550.00 - 620.00
Yield strength ( MPa ) ( Soft ) 550.0
Atomic Properties(原子属性)
Atomic number 74
Atomic weight ( amu ) 183.85000
Crystal structure Body Centred Cubic
Electronic structure Xe4f??5d?6s?
Ionisation potential ( No./eV ) 1 / 7.98
Ionisation potential ( No./eV ) 2 / 17.7
Natural isotope distribution ( Mass No./% ) 183 / 14.3
Natural isotope distribution ( Mass No./% ) 182 / 26.3
Natural isotope distribution ( Mass No./% ) 186 / 28.6
Natural isotope distribution ( Mass No./% ) 180 / 0.1
Natural isotope distribution ( Mass No./% ) 184 / 30.7
Photo-electric work function ( eV ) 4.55
Thermal neutron absorption cross-section ( Barns ) 18.5000
Valences shown 2 ,3,4,5,6
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm ) 5.4@20℃
Superconductivity critical temperature ( K ) 0.0154
Temperature coefficient ( K?? ) 0.00480 @0-100℃
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) 1.12
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10?? K?? ) 4.500 @0-100℃
Latent heat of evaporation ( J g?? ) 4009
Latent heat of fusion ( J g?? ) 192.00
Melting point ( C ) 3410.00
Specific heat ( J K?? kg?? ) 133.0 @25℃
Thermal conductivity ( W m?? K?? ) 173.00 @0-100℃
Physical Properties(物理性质)
Boiling point ( C ) 5660
Density ( g cm?? ) 19.300 @20℃

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%
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