99.95% Purity Pure Tungsten Plate Alloy Sheet 1.5mm Thickness 150*150mm Tungsten Sheet For Semiconductor W Products
99.95% Purity Pure Tungsten Plate
1. Description Of 99.95% Purity Pure Tungsten Plate:
Tungsten plate is created and processed using powder metallurgy. The hot and cold rolled tungsten plate, sheet and strip products produced by rolling increase the crystallization temperature of tungsten by 500℃～700℃, which can meet the requirements of vacuum furnace operating temperature of 2500℃. Heat shield material needs.
Purity: >99.95%
Density: 19.3g/cm3
Flatness: ≤2%
Standard: ASTM B760
2. Size and Tolerance Of 99.95% Purity Pure Tungsten Plate:
Unit:mm
| Thickness | Thickness tolerance | Width |
Width tolerance |
Length | Length tolerance | Delivery condition |
| ＜0.2 | ±0.02 | 10~150 | ±2 | 500 | ±2 | Cold rolled |
| 0.3 | ±0.03 | 10~250 | ±2 | 500 | ±2 | Cold rolled |
| 0.4 | ±0.04 | 10~250 | ±2 | 500 | ±2 | Cold rolled |
| 0.5 | ±0.05 | 10~300 | ±2 | 500 | ±2 | Cold rolled |
| 0.8 | ±0.07 | 10~300 | ±0.5 | 500 | ±0.5 | Cold rolled |
| 1.0 | ±0.08 | 10~300 | ±0.5 | 600 | ±0.5 | Cold rolled |
| 1.5 | ±0.12 | 10~400 | ±0.5 | 600 | ±0.5 | Cold rolled |
| 2.0 | ±0.12 | 10~500 | ±0.5 | 700 | ±0.5 | Cold rolled |
| 3.0 | ±0.20 | 10~500 | ±0.5 | 600 | ±0.5 | Hot rolled |
| 4.0 | ±0.30 | 10~500 | ±0.5 | 600 | ±0.5 | Hot rolled |
| ≥5.0 | ±0.40% | 10~550 | ±0.5 | 600 | ±0.5 | Hot rolled |
Based on customer needs, custom sizes can be produced.
1.5mm thickness tungsten sheet actual photo:
3. Manufacture process and Equipment Of 99.95% Purity Pure Tungsten Plate:
| Item | Process | Equipment | Quality check point |
| 1 Physical and chemical properties | |||
| 1 | Tungsten billet | 2 Measurements of sheet billet | |
| 2 | Check | 3 Surface quality | |
| 4 Unit net weight of billet material | |||
| 3 | Hot rolled | Hot mill | 1 Measurements (thickness , width) |
| 4 | Annealing | Anneal furnace | 2 Side crack, stratification for top |
| 5 | An alkali wash | Alkali bath heater | Three skew rolls |
| 6 | Check | 4 Flatness | |
| 7 | A warm roll | Cold mill with four levels | Measurements, one (length, width and thickness) |
| 8 | Annealing | Anneal furnace | 2 Side crack, bubbles on surface, uneven on surface |
| 9 | Check | 3 Flatness | |
| 10 | Cold rolled | Four –high cold mill | 1 Density |
| 11 | cut | Hydraulic plate shears | 2 Measurements (length, width, and thickness) |
| 12 | annealing | Vacuum annealing furnace | 3 Surface quality ,bubble on surface, |
| 13 | machining | Wire cutting machine | 4 Roll mark, stress, Flatness |
| 14 | check | Flat-stone mill | 5 Quality standard:GB/T3875-2006 |
| 15 | package | 6 Show certificate of quality |
4.Application Of 99.95% Purity Pure Tungsten Plate:
After rolling and processing with deflection reaching 60% , the density of tungsten sheet basically comes close to tungsten’s theory density. Due to its high density and balanced internal structure, tungsten sheet possesses remarkable high creep strength temperature properties. High temperature resistance boats, titanium sputtering targets for plasma coating films, reflection shields, heating tape, connecting components for vacuum furnaces, cover plates for sapphire growth furnaces, and reflection shields are all common applications for tungsten sheet.
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