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材料 >> 金属材料
钨,螺栓, W, M4×30mm
钨,螺栓, W, M4×30mm图片
品牌: Goodfellow
产地: 英国
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品牌: Goodfellow
产地: 英国
半岛bd体育手机客户端 介绍
订货号 包装规格
141-017-37 10 Piece
796-963-44 25 Piece
150-176-00 50 Piece

半岛bd体育手机客户端 参数

Head Style[头型] Hexagonal
Pitch[螺距] 0.7
Quantity[数量] 10 Piece - 50 Piece
Size[尺寸] M4 x 30mm
Standard[标准] ISO 4017:2011
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℃
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