Screw, Nut, Bolt Elements
Chemical composition: Tungsten >99.95%
Molybdenum >99.95%, molybdenum lanthanum alloy, TZM alloy, Titanium, Tantalum
Specification: Hexagon, round head and special design
Working temperature: 1500 ~ 2600 ° C
Produce Method: Powder Metallurgy
Main applications
Sapphire single crystal growth furnace, metallurgical industry furnace, vacuum furnace, high temperature furnace, silicon industry furnace, quartz glass, metal extracting, , machinery processing, glass and ceramic industries, etc.
SMT's advantage in Screw components
1. High purity, Smooth finish, difficulty design, special shape
2. Long history and rich experience of supply W & Mo &Ta & Ti screw
3. Competitive price & professional service.
Tungsten Property |
Melting point: |
3420 o C± 20 o C
|
Boiling point: |
5550 o C
|
Coefficient of linear thermal expansion at 20 ° C |
4.2 @ 10 -6 [m/(m@ K)] |
Thermal conductivity at 20 ° C |
164 [W/(m@ K)]
|
Specific heat at 20 ° C |
0.13 [J/(g@ K)]
|
Electrical conductivity at 20 ° C |
18 @ 10 6 [1/Ω @ m)]
|
Specific electrical resistance at 20 ° C |
: 0.050 [(Ω @ mm 2 )/m]
|
Molybdenum Property |
Melting point: |
2620 o C± 20 o C
|
Boiling point: |
4679 o C
|
Coefficient of linear thermal expansion at 20 ° C |
5.2 @ 10 -6 [m/(m@ K)] |
Thermal conductivity at 20 ° C |
142 [W/(m@ K)]
|
Specific heat at 20 ° C |
0.254 [J/(g@ K)]
|
Electrical conductivity at 20 ° C |
17.9 @ 10 6 [1/Ω @ m)]
|
Specific electrical resistance at 20 ° C |
: 0.056 [(Ω @ mm 2 )/m]
|