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镁,粉末, Mg, 250μm最大粒度
镁,粉末, Mg, 250μm最大粒度图片
品牌:Goodfellow
纯度含量:99.8%
产地:英国


产品介绍
订货号包装规格
Weight
048-337-38100g
042-166-87200g
477-365-66300g
849-437-11400g
270-853-05500g
856-626-251000g
259-615-092000g
260-902-093000g
349-183-344000g
569-026-465000g
750-312-456000g
352-059-967000g
234-871-928000g
948-034-919000g
895-777-5310000g
726-129-0625000g
600-654-1450000g
190-529-5075000g
758-475-41100000g

产品参数

Maximum Particle Size[最大粒度]250μm
Purity[纯度]99.8%
Surface Finish[表面光洁度]Ground
Weight[重量]100g - 100000g
Typical Analysis(典型分析)
Ca<100 PPM
Thermal Properties(热性能)
Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ )26.000 @0-100℃
Latent heat of evaporation ( J g⁻¹ )5254
Latent heat of fusion ( J g⁻¹ )362.00
Melting point ( C )649.00
Specific heat ( J K⁻¹ kg⁻¹ )1020.0 @25℃
Thermal conductivity ( W m⁻¹ K⁻¹ )156.00 @0-100℃
Mechanical Properties(机械性能)
Bulk modulus ( GPa ) ( Hard )35.6
Bulk modulus ( GPa ) ( Soft )35.6
Hardness - Vickers ( kgf mm⁻² ) ( Hard )35 - 45
Hardness - Vickers ( kgf mm⁻² ) ( Soft )30 - 35
Material conditionHard
Material conditionSoft
Poisson's ratio ( Hard )0.291
Poisson's ratio ( Soft )0.291
Tensile modulus ( GPa ) ( Hard )44.70
Tensile modulus ( GPa ) ( Soft )44.70
Tensile strength ( MPa ) ( Hard )232.00
Tensile strength ( MPa ) ( Soft )185.00
Yield strength ( MPa ) ( Hard )100.0
Yield strength ( MPa ) ( Soft )69.0
Atomic Properties(原子属性)
Atomic number12
Atomic weight ( amu )24.30500
Crystal structureHexagonal Close Packed
Electronic structureNe3s²
Ionisation potential ( No./eV )2 / 15.03
Ionisation potential ( No./eV )6 / 187
Ionisation potential ( No./eV )4 / 109
Ionisation potential ( No./eV )5 / 141
Ionisation potential ( No./eV )1 / 7.65
Ionisation potential ( No./eV )3 / 80.1
Natural isotope distribution ( Mass No./% )24 / 78.99
Natural isotope distribution ( Mass No./% )26 / 11.01
Natural isotope distribution ( Mass No./% )25 / 10.00
Photo-electric work function ( eV )3.66
Thermal neutron absorption cross-section ( Barns )0.0640
Valences shown2
Physical Properties(物理性质)
Boiling point ( C )1090
Density ( g cm⁻³ )1.740 @20℃
Electrical Properties(电气特性)
Electrical resistivity ( μOhmcm )4.2@20℃
Temperature coefficient ( K⁻¹ )0.00425 @0-100℃
Thermal emf against Pt (cold 0C - hot 100C) ( mV )0.44

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。

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