REFRACTORY PRODUCTS SERIES

TUNGSTEN (W)
Grade:W-1 、 W-2 、 W-4
Grade Impurity content % max
Pb Bi Sn Sb As Fe Ni Al
Mo-1 / / / / / 0.005 0.003 0.002
Mo-2 / / / / / 0.005 0.003 0.002
Mo-4 0.001 0.001 0.001 0.001 0.002 0.050 0.30 0.005
Grade Impurity content % max
Si Ca Mg Mo P C O N
Mo-1 0.003 0.003 0.002 0.010 0.001 0.005 0.003 0.003
Mo-2 0.003 0.003 0.002 0.010 0.001 0.008 0.003 0.003
Mo-4 0.010 0.005 0.010 0.20 0.005 0.010 0.008 /

MOLY BDENUM (Mo)
Grade:Mo-1、Mo-2、Mo-4
Grade Impurity content% max
Pb Bi Sn Sb Cd Fe Ni Al
Mo-1 / / / / / 0.006 0.003 0.002
Mo-2 / / / / / 0.006 0.003 0.002
Mo-4 0.001 0.001 0.001 0.001 0.001 0.050 1.0 0.005
Grade Impurity content% max
Si Ca Mg P C O N  
Mo-1 0.003 0.002 0.002 0.001 0.020 0.003 0.003  
Mo-2 0.003 0.002 0.002 0.001 0.010 0.003 0.003  
Mo-4 0.010 0.004 0.004 0.005 0.050 0.008 /  
MECHNICAL PROPERTIES
Meta Symbo (°C) Melt Point (°C) Boil Point Density at 20°C Coefficient of Thermal Expansion near 20°C Specific Heat at ? 20°C Thermal Conductivity near 20°C
 
Electrical Resistivity
 
Purity (%) Commonly Alloyed with
(gm/cu cm) (X 10 -6 /°C (cal / g / °C) (cal / sq cm / microhm / cm ohms/cmf @ 20°C
cm / sec / °C)
Tungsten W 3410 5930 19.3 4.3 0.033 0.48 5.5( 20°C ) 33.08 99.9 - 99.99 Re, Mo, Pt, Ta, Nb, Thoria
Molybdenum Mo 2620 5550 10.22 4.9 0.062 0.35 5.17( 0°C ) 31.10 99.9 - 99.99 W, Re
Niobium Nb 2468 4400 8.57 7.1 0.064 0.13 13.1( 20°C ) 78.80 99 - 99.99 Ta, W, Ti
Tantalum Ta 2996 5425 16.6 6.5 0.034 0.13 12.4( 18°C ) 74.19 99.9 - 99.99 W, Hf
Titanium Ti 1660 3260 4.51 8.5 0.126 0.041 80( 0°C ) 481.2 99 - 99.9 Nb