786棋牌|乐






                                       
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                                      Lead Sheet
                                      Lead Pipe
                                      Lead Anode
                                      Lead Brick
                                      Lead Wire
                                      Lead Wool
                                      Leat Strip
                                      Lead Sinker
                                      Lead Sleeves
                                      Lead Rod
                                      Lead F-Shots
                                      Lead Plates
                                      Lead Circle
                                      Lead Alloy
                                      Lead Ballasts
                                      Lead Container
                                      Lead Flashing Plate
                                      Lead Powder
                                      Zinc Rod
                                      Zine Anode
                                           
                                       
                                      Atomic Number
                                      82
                                      Atomic Weight
                                      207.21
                                      Density (20oC) 11.34 g/cm3
                                      Melting Point
                                      600.55 K(327.4o C)
                                      Boiling Point
                                      2023.15 K (1750o C)
                                      Coefficient of linear thermal expansion(20oC-100oC mean) 29.3 x 10-6/k
                                      Thermal conductivity(near 20oC) 34.66 W/m K
                                      Specific Heat (20oC) 129.8 J/kg K
                                      Latent heat of fusion 26204 J/kg
                                      Lattice constant "a" 4.9395 kX-units*
                                      Closest approach of atmos 3.493 kX-units*
                                      * 1kX-units = 1002.02 Angstroms
                                       
                                           
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