Tungsten Heat Shield with Purity Over 99.95%

• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Purity: >99.95%
• Alloy: Alloy
• Shape: Furnace
• Type: Tungsten Shield
• Model NO.: tungsten shield
• Transport Package: Plywood Box with Foam Inside
• Origin: China
• HS Code: 8101999000
• Production Capacity: 100000PC

Product Description

Tungsten Heat Shield

Tungsten heat shields are mainly used as a material for construction in specific areas of vacuum furnace hot zones. As the heat-shield parts in the sapphire growth furnace, the most decisive function of the upper and lower cover plates is to prevent and reflect the heat in the furnace.
Heat-shield parts with high density, exact measurement, smooth surface, easy to assemble, and reasonable design have great significance in improving crystal pulling.


What is the Tungsten heat shield?
The tungsten heat shield is to maintain the temperature inside the tungsten crucible and prevent external personnel from being harmed. The tungsten heat shield is made of sheets purity above 99.95%. The production process of the tungsten heat shields in the sapphire growth furnaces is using tungsten powder by hydrostatic compaction and high-temperature sintering. Tungsten heat shields used in sapphire growth furnaces can be made by hot roll and cold roll.


Application
Tungsten/Wolfram heat shields are mainly used as a material of construction in specific areas of vacuum furnace hot zones. A maximum operating temperature of 2400°C can be achieved. As the heat-shield parts in the sapphire growth furnace, the most decisive function of the upper and lower cover plates is to prevent and reflect the heat in the furnace. Heat-shield parts with high density, exact measurement, smooth surface, easy to assemble, and reasonable design have great significance in improving crystal pulling.


Advantage

1. High melting point, 3420°C (6187°F)
2. Low vapor pressure
3. High hot strength
4. Low thermal expansion
5. High thermal conductivity
6. High Young's modulus
7. High corrosion resistance against acids and molten metals
8. Recrystallization temperature, between 1100º - 1400ºC (2012º - 2550ºF)
9. Good electrical conductivity
10. High modulus of elasticity

Specification
Regular Specs

Tungsten Cover Plates		Tungsten Heat Shield/ Single sheet
Sheet Thickness	Dia (Max)	Sheet Thickness	Dia(Max)	Height(Max)
2.0±0.1	660±0.2	2.0±0.1	450±2	660±1
1.0±0.08	660±0.2	1.0±0.08	610±2	660±1
0.5±0.04	660±0.2	0.5±0.04	700±2	660±1

We can supply tungsten needles as per customers' requests. As an experienced supplier, we can supply high-quality tungsten heat shields with competitive prices.
If there are any other specs, please contact us with no hesitation!
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Content update time:2024.05.09