Model NO.: Tech grade
Content: 80-99.99%
Trademark: SMART CHEMICALS
Specification: tech grade
Origin: China
Product Name:Â Natural flake graphite
CAS NO.:7782-42-5
Expandable graphite is our high-quality natural flake graphite. It is a soft graphite product obtained by special modification. This graphite product is an ideal novel sealing material widely used for dynamic and static sealing in petroleum, chemical, power, aerospace, auto, ship and instrument industries.After high-temperature instant treatment, the flakey shape of the expandable graphite changes to worm shape, with volume increasing by 100 to 400 times. This expandable graphite still retains the properties of natural graphite and has high plasticity, ductility and sealing performance. It is high-quality raw material for various graphite boards and sealing parts. It also can be used as new protective slag and heating agent in metallurgical industry.Type: Export flame-retarding, polyurethane and petroleum absorbing graphite products
Specifications: 32 meshes, 50 meshes, 80 meshes, 100 meshes, -100 meshes, 200 meshes and -325 meshes
Expansion power: 100-400ml/g
Performance: These products have high expansion performance. Finished products have high temperature resistance, radiation resistance, thermal insulation performance, lubricating performance, plasticity and chemical stability.
Application: These products can be used in steel & iron, metallurgical, petroleum, chemical, mechanical, aviation, automatic energy or the like industrial sectors.
Technical indexes of expandable graphite:
1. Ultralow-sulfur expandable graphite
Specifications |
Fixed Carbon(%) |
Ash Content(%) |
Volatile Matter Content(%) |
Expansion Power
(ml/g) |
Sulfur Content
(%) |
PHValue |
Water Content(%) |
Granularity(%)Â
Undersize Material |
Hd32 |
90-99.9 |
≤8.0 |
≤10 |
200-400 |
≤0.03 |
3-7 |
≤1.0 |
≥80 |
Hd50 |
200-350 |
Hd80 |
150-250 |
Hd100 |
100-200 |
The product has the advantage that the sulfur content can be reduced to a minimum range.
2. Ultra-fine expandable graphite
Specifications |
Fixed Carbon(%) |
Ash Content(%) |
Volatile Matter Content(%) |
Expansion Power
(ml/g) |
Sulfur Content
(%) |
PHValue |
Water Content(%) |
Granularity(%)Â
Undersize Material |
Hd-100 |
90-99 |
≤8.0 |
≤15 |
30-120 |
≤2.2 |
4-7 |
≤1.0 |
≥80 |
Hd-200 |
15-50 |
Hd-325 |
10-20 |
The advantage of the product is ultrafine grains.
3. Common expandable graphite
Specifications |
Fixed Carbon(%) |
Ash Content(%) |
Volatile Matter Content(%) |
Expansion Power
(ml/g) |
Sulfur Content
(%) |
PHValue |
Water Content(%) |
Granularity(%)Â
Undersize Material |
Before(%) |
After(ppm) |
Hd32 |
90-99.9 |
≤8.0 |
≤12 |
200-400 |
≤2.2 |
≤1500 |
3-7 |
≤1.0 |
≥80 |
Hd50 |
200-350 |
Hd80 |
150-250 |
Hd100 |
100-200 |
Indexes can be regulated at customers' request.