PRODUCTS

Expandable Crystalline Flake Graphite

Expandable graphite still retains the characteristics of natural flake graphite, and also has good expandability, it is loose and porous.
 
Made of high quality natural flaky graphite through special chemical modification at high temperature, and has the expansion ratio from 100 to 400 ml/g.
 
Its heat-resistance ranges -200 °C to 3000 °C under oxygen-free environment, and it is chemically stable under high temperature, pressure or radiation.
 
It is widely used in the dynamic and static seals in petroleum industry, chemical industry, electric industry, space industry, and automobile industry, etc.
 
According to the needs of the market, we are able to offer ultra low sulphur expandable graphite and ultra fine expandable graphite, too.
 
 
 
Available Types and Main Properties 

Expandable Crystalline Flake Graphite

 
Grade
 

Volatile, Max.

 
Ash, Max.
 

Moisture, Max.

 
PH value

Particle size, Min.

Expansion multiple

(M/G)
(%)
(%)
(%)
 
(%)
 
N-EX300
15
1
1
3 - 7
75
300
N-EX280
15
1
1
3 - 7
75
280
N-EX150
15
15
1
3 - 7
75
150
N-EX250
15
1
1
3 - 7
75
250
N-EX250
15
5
1
3 - 7
75
250
N-EX250
15
15
1
3 - 7
75
250
N-EX180
15
15
1
3 - 7
75
180
N-EX200/1
15
1
1
3 - 7
75
200
N-EX200/5
15
5
1
3 - 7
75
200
N-EX150
15
15
1
3 - 7
75
150
N-EX120
15
15
1
3 - 7
75
120
N-EX100
15
15
1
3 - 7
75
100
 
 
 

Ultra Low Sulphur Expandable Graphite

Grade
Fixed
carbon
Ash
Volatile

Expansion ratio

Sulphuric acid content

PH value
Moisture

Particle size screen oversize

(%)
(%)
(%)
(ml/g)
(%)
(%)
(%)
(%)
N-EX ULS32
90 - 99.9
8.0 Max.
10 Max.
200 - 400
0.03 Max.
3 - 7
1.0 Max.
80 Min.
N-EX UL50
90 - 99.9
8.0 Max.
10 Max.
200 - 350
0.03 Max.
3 - 7
1.0 Max.
80 Min.
N-EX ULS80
90 - 99.9
8.0 Max.
10 Max.
150 - 250
0.03 Max.
3 - 7
1.0 Max.
80 Min.
N-EX ULS100
90 - 99.9
8.0 Max.
10 Max.
100 - 200
0.03 Max.
3 - 7
1.0 Max.
80 Min.
 
 
 

Ultra Fine Expandable Graphite

Grade

Fixed carbon

Ash
 
Volatile
 

Expansion ratio

Sulphuric acid content

PH value
Moisture

Particle size screen oversize

(%)
(%)
(%)
(ml/g)
(%)
(%)
(%)
(%)

N-EX UF100

90 - 99
8.0 Max.
15 Max.
30 - 300
2.2 Max.
4 - 7
1.0 Max.
80 Min.

N-EX UF200

90 - 99
8.0 Max.
15 Max.
15 - 50
2.2 Max.
4 - 7
1.0 Max.
80 Min.

N-EX UF325

90 - 99
8.0 Max.
15 Max.
10 - 20
2.2 Max.
4 - 7
1.0 Max.
80 Min.
 
 


Characteristics and Benefits
  • Good expansibility
  • Pressure resistance
  • Self-lubricating material
  • Flexible
  • High chemical resistance and chemical stability. Resistant to fluids with pH range of 0-14 (except strong oxidizers such as nitric or sulphuric acid).
  • High purity. Eliminates potential fluid contamination, ideal material for nuclear applications

 

Applications 

  • High quality raw material for different types of graphite plates and sealing materials
  •  Exothermic compound, flame retardant in metallurgical industry
  • High-tech industry
  • Military industry
  • Nuclear energy
  • Chemical industry
  • Vehicle industry 

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