Sangao graphite is high-purity graphite with high purity, high density and high strength. When high-purity graphite is used, the carbon content is more than 99.99%. It is an ideal non-metallic graphite crucible, graphite boat and single crystal furnace in the graphite industry. The heating elements are graphite heaters, EDM graphite processing, sintering molds, electronic semiconductors, etc.
1：Sangao graphite is high-purity graphite with high purity, high density and high strength. When high-purity graphite is used, the carbon content is more than 99.99%. It is an ideal non-metallic graphite crucible, graphite boat and single crystal furnace in the graphite industry. The heating elements are graphite heaters, EDM graphite processing, sintering molds, electronic semiconductors, etc.
2：Sangao graphite has many advantages such as small resistivity, high temperature resistance, corrosion resistance, oxidation resistance, good thermal shock resistance, good electrical and thermal conductivity, self-lubricating, stable chemical properties and easy processing. Of course, these characteristics of isostatic graphite are very prominent as a fine product in graphite. Isostatic graphite is three-high graphite, but three-high graphite is not necessarily isostatic graphite. Why do you say this? Because isostatic graphite is pressed from high-purity graphite, isostatic graphite is an internationally recognized new product and is closely related to today's technology.
3：The application of three-high graphite products is usually used in the fields of electrical conductivity and metallurgy of heavy industry. Almost all of them are made of three-high graphite as raw materials, and are made of graphite products processed by CNC lathes, CNC and other precision equipment. After design and programming, three-high graphite products can be Graphite processing produces three-high graphite products of various shapes, specifications and applications. It has good self-lubrication and wear resistance, high temperature resistance, electrical conductivity, etc., and has significant advantages such as wear resistance, corrosion resistance, easy processing and production, and unique mechanical strength. Three high graphite products are made of three high graphite materials. Processed, graphite crucibles, sintered graphite fixtures, graphite fixtures, etc. are almost all three-high graphite products. Three-high graphite products have good electrical conductivity, high temperature resistance, and wear resistance. According to the various characteristics of three-high graphite products , The application of three high graphite products is usually used in industrial fields such as refractory, metallurgy, electrical conductivity, glass sealing and sintering.
| Physical and chemical indicators of molded three-high graphite | |||||||||
| Project | Unit | X-4 | X-5 | H-5 | F-5 | H-6 | W-6 | X-7 | X-8 |
| Bulk density | g/cm3 | 1.75 | 1.85 | 1.68 | 1.75 | 1.90 | 1.91 | 1.85 | 1.91 |
| Resistivity | μ Ω·m | 8.5 | 8.5 | 13 | 9-10 | 8-9 | 8-9 | 11-13 | 11-13 |
| Thermal conductivity (10℃) | W/(m·K) | 121.1 | 139.2 | 139.5 | 140 | 140 | 140 | 85 | 85 |
| CTE(room temperature-600℃) | 10-6／℃ | 5.46 | 4.75 | 4.9 | 4.9 | 5.1 | 5.4 | 5.6 | 5.85 |
| Shore hardness | HSD | 42 | 48 | 49 | 56 | 53 | 53 | 65 | 70 |
| Flexural strength | Mpa | 38 | 46 | 38 | 43 | 55 | 55 | 51 | 60 |
| Compressive strength | Mpa | 65 | 85 | 86 | 86 | 95 | 95 | 115 | 135 |
| Elastic Modulus | Gpa | 9 | 11.8 | 18 | 11 | 10 | 11 | 11 | 12 |
| porosity | % | 16 | 13 | 16 | 12 | 11 | 11 | 12 | 11 |
| Ash | PPM | 500 | 500 | 500 | 500 | / | / | / | / |
| Purified ash | PPM | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 |
| Graininess | μm | 12-15 | 12-15 | 12-15 | 12-15 | 10-12 | 8-10 | 8-10 | 8-10 |
| Physical and chemical indicators of purified graphite | ||||
| Technical indicators Typical Properties | Grades | |||
| XWT- 1 | XWT-II | XWT- 1 | XWT-II | |
| Bulk Density（g/cm3)(≮) | 1.6 | 1.7 | * | * |
| Porosity(%)(≯） | 27 | 23 | * | * |
| Compression Strength(Mpa)(≮) | 28 | 30 | * | * |
| Specific Electrical Resistance（μ Ω·m）（≯） | 10 | 8 | * | * |
| Graininess | * | * | 320 | 250 |
| Ash(PPm) （≯） | 10 | 10 | 10 | 50 |
| Sizes（mm) | Φ6*300 | Φ8|Φ10|Φ13|Φ15 length are 300 | Spectrally pure graphite powder | High purity graphite powder |
| Physical and chemical indicators of ultra-high power graphite electrodes | ||||||
| Item | Unit | Nominal Diameter (mm) | ||||
| ᶲ 300〜ᶲ 400 | ᶲ 450〜ᶲ 500 | ᶲ 550〜ᶲ 600 | ᶲ 650〜ᶲ 700 | |||
| Resistivity | Electrode | μ Ω·m | 6.2 | 6.3 | 6.3 | 6.3 |
| Nipple | 5.0 | 5.0 | 4.5 | 4.5 | ||
| Flexural strength ≮ | Electrode | Mpa | 10.5 | 10.6 | 11.0 | 11.0 |
| Nipple | 18.0 | 18.0 | 20.0 | 22.0 | ||
| Modulus elasticity ≯ | Electrode | Gpa | 14.0 | 14.0 | 14.0 | 14.0 |
| Nipple | 18.0 | 18.0 | 22.0 | 22.0 | ||
| Bulk density ≮ | Electrode | g/cm3 | 1.66 | 1.66 | 1.66 | 1.66 |
| Nipple | 1.73 | 1.74 | 1.75 | 1.78 | ||
| CTE ≯ (100 〜600 °C) | Electrode | x10-6/℃ | 1.5 | 1.5 | 1.4 | 1.4 |
| Nipple | 1.4 | 1.4 | 1.2 | 1.2 | ||
| Ash content ≯ | % | 0.3 | 0.3 | 0.5 | 0.5 | |
| Note: Ash content and coefficient of thermal expansion are reference indiex | ||||||
| Physical and chemical indexes of Donghai isostatically pressed graphite material | |||
| Project | G330 | G347 | G458 |
| Density g/cm3 | 1.79 | 1.85 | 1.86 |
| Flexural strength Mpa | 39.2 | 49.0 | 53.9 |
| Tensile strength Mpa | 25.5 | 31.4 | 35.3 |
| Young's modulus | 9.8 | 10.8 | 11.3 |
| Shore hardness | 56 | 58 | 54 |
| CTE x10-6/℃ | 4.8 | 5.5 | 4.4 |
| Thermal conductivity W/m·K | 104 | 116 | 139 |
| Resistivity μ Ω·m | 13 | 11.0 | 9.5 |
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