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Expandable Graphite
Expandable Graphite is a flexible graphite product manufactured from high-quality natural flake graphite produced by our company through special modification processes. It is an ideal new-type sealing material and is widely used in both dynamic and static sealing applications across industries such as petroleum, chemical processing, power generation, aerospace, automotive, shipbuilding, and instrumentation.
Detail:
Expandable graphite is a flexible graphite product made from high-quality natural flake graphite produced by our company through special modification treatment. It is an ideal new-type sealing material, widely used for dynamic and static sealing in industries such as petroleum, chemical processing, electric power, aerospace, automotive, shipbuilding, and instrumentation.
After instantaneous high-temperature treatment, expandable graphite transforms from a flake structure into a worm-like form, with its volume expanding by 100–400 times. This expanded graphite still retains the properties of natural graphite, while exhibiting good formability, flexibility, extensibility, and sealing performance. It is a high-quality raw material for various graphite sheets and sealing components, and can also be used as a new type of protective slag and exothermic agent in the metallurgical industry.
Grades: 9950250, 9980250, 9950200, 9980200, 9550250, 9580200, etc.
Specifications:
Particle size: 32 mesh, 50 mesh, 80 mesh, 100 mesh, 100–200 mesh, 325 mesh
Expansion ratio: 100–400 ml/g
Properties:
Good expandability; finished products exhibit high temperature resistance, radiation resistance, thermal insulation, lubricity, plasticity, and chemical stability.
Applications:
Widely used in industrial sectors such as steel, metallurgy, petroleum, chemical, machinery, aerospace, and nuclear industries.
Main technical specifications:
|
Specification |
Carbon Content (%) |
Volatile Matter (%) |
Moisture (%) |
Expansion Ratio (times） |
PH |
Particle Size (%) |
|
KP32 |
80-99.99 |
≤13 |
≤2.5（优质品≤1） |
200-400 |
3-6 |
≥80 |
|
KP50 |
150-350 |
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|
KP80 |
100-250 |
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|
KP100 |
100-200
|
Technical Specifications of Expandable Graphite:
1.Ultra-Low Sulfur Expandable Graphite
| Specification | Fixed Carbon(%) | Ash(%) | Volatile Matter(%) | Expansion ratio (ml/g) |
Sulfur content (%) |
PH | Moisture(%) | Particle size(%) |
|---|---|---|---|---|---|---|---|---|
|
DL32 |
90-99.9 |
≤8.0 |
≤10 |
200-400 |
≤0.03 |
3-7 |
≤1.0 |
≥80 |
|
DL50 |
200-350 |
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|
DL80 |
150-250 |
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|
DL100 |
100-200 |
Product Features:
Extremely low sulfur content, precisely controlled to a minimum level
High expansion ratio with stable expanded structure
Excellent high-temperature resistance and sealing performance
Good flexibility and plasticity
Strong chemical stability and long service life
2.Ultra-Fine Expandable Graphite
| Specification | Fixed Carbon(%) | Ash(%) | Volatile Matter(%) | Expansion ratio(ml/g) | Sulfur content (%) |
PH | Moisture(%) | Particle size(%) |
|---|---|---|---|---|---|---|---|---|
|
CX-100 |
90-99 |
≤8.0 |
≤15 |
30-120 |
≤2.2 |
4-7 |
≤1.0 |
≥80 |
|
CX-200 |
15-50 |
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|
CX-325 |
10-20 |
Product Features:
Ultra-fine and uniform particle size
High expansion ratio with stable expanded structure
Good flexibility and plasticity
Excellent high-temperature resistance and sealing performance
Low sulfur / ultra-low sulfur grades available upon request
3.Standard Expandable Graphite
| Specification | Fixed Carbon(%) | Ash(%) | Volatile Matter(%) | 膨胀倍率 (ml/g) |
硫含量(%) | PH值 | 水分(%) | 粒度(%) 筛上物 |
|
|---|---|---|---|---|---|---|---|---|---|
| 膨胀前(%) | 膨胀后(ppm) | ||||||||
|
Kp32 |
90-99.9 |
≤8.0 |
≤12 |
200-400 |
≤2.2 |
≤1500 |
3-7 |
≤1.0 |
≥80 |
|
Kp50 |
200-350 |
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|
Kp80 |
150-250 |
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|
Kp100 |
100-200 |
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Specifications can be adjusted according to customer requirements.
