Lower-Sulphur Graphite

Flexible graphite sheet & roll,namely expanded graphite sheet & roll, is made from flake graphite with high carbon content which is gone through chemical treatment, expanding under high temperature and then rolling. It has the characteristics of high temperature resistance, corrosion resistance and good elasticity, and is the basic material for making all kinds of reinforced graphite sheets, graphite tapes, packing and sealing gaskets.

※ Working Temperature:

Temperature(°C )
In oxidizing atmosphere
In non-oxidizing atmosphere
Pressure(Mpa)
PH Range

-240~650
-240~3500
10
0~14


※ Standard Specification:

Thickness(mm) Width(mm)
Length(m)
Density(g/cm3)

Sheet
Roll
2~1500
1~1000
0.6~2.0

0.10~10.0
0.10~2.0


※ Main Properties:

Project
Industrial
Grade I
Industrial
Grade II
Industrial
Grade Ⅲ
Nuclear
Grade I
Nuclear
Grade II
Nuclear
Grade Ⅲ

Tolerance of density ( g/cm3 )
±0.03
±0.03
±0.05
±0.03
±0.03
±0.03

Tolerance of thickness(mm)
±0.03
±0.03
±0.04
±0.03
±0.03
±0.03

Carbon Content ( % )
≥99.5
≥99
≥97
≥99.7
≥99.5
≥99.3

Tensile Strength ( Mpa )
≥5
≥4.8
≥4.5
≥5
≥4.8
≥4.6

Compressibility( % )
≥50
≥50
≥50
≥50
≥50
≥50

Recovery( % )
≥12
≥11
≥11
≥12
≥11
≥11

Sulphur Content( PPm )
40~800
100~800
<1200
<100
<200
<500

Chlorine Content( PPm )
<20
<25
<30
<20
<25
<30

Stress relaxation( % )
10
10
10
10
10
10

lgnition Loss( % )
<0.5
<0.1
<0.1
<0.5
<0.1
<0.1


Other special requirements is also available on request.