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C-C/Carbon-Carbon Composite Material

C-C/Carbon-Carbon Composite Material
Project Specification Unit
Density 1.40-2.0 g/cm3
Metal Impurity Content ≤100 ppm
Flexural Strength ≥100 Mpa
Compressive Strength ≥120 Mpa
Resistivity 30-40 μΩm
Thermal Conductivity Parallel 20-30 M/mk
Vertical 12-20 M/mk
Thermal Expansion Coefficient Parallel 0-0.5×10-6 m/k
Vertical 4-5.5×10-6 m/k
Maximum Operating Temperature Air ＜400 ℃
Vacuum 2500 ℃
Inert Gas 3500 ℃
Heat Treatment Temperature 1600-2300 ℃

 

TSK Graphite Physical and Chemical Indicators

TSK Graphite Physical and Chemical Indicators
Project Unit Technical Value Technical Value
Bulk Density g/cm3 1.71 1.74
Maximum Particle Size mm 2 2
Resistance Value μΩm 8.0-10 8.0-10
Flexural Strength Mpa ≥12.5 ≥14.5
Compressive Strength Mpa ≥28.0 ≥34.0
Thermal Expansion Coefficient 10-6/℃ ＜2.7 2.3
Thermal Conductivity W/m·K 120 140

 

GSK Graphite Physical and Chemical Indicators

GSK Graphite Physical and Chemical Indicators
Project Unit Guaranteed Value Typical Value
Bulk Density g/cm3 ≥1.72 1.74
Maximum Particle Size mm 0.8 0.8
Resistivity μΩm ≤9.0 8.5
Flexural Strength Mpa ≥13.5 15.5
Compressive Strength Mpa ≥32.0 38.0
Thermal Expansion Coefficient 10-6/℃ ≤2.8 2.4
Thermal Conductivity W/m·K ≥120 140
Ash Content % ≤0.2 0.10

 

Ultra High Power Graphite Electrode Physical and Chemical Indicators

Project Unit Nominal Diameter (mm)
∮300～∮400 ∮450～∮500 ∮550～∮600 ∮650～∮700
Resistivity
≯		 Electrode μΩm 6.2 6.3 6.3 6.3
Joint 5.0 5.0 4.5 4.5
Flexural Strength
≮		 Electrode Mpa 10.5 10.6 11.0 11.0
Joint 18.0 18.0 20.0 22.0
Elastic Modulus
≯		 Electrode Gpa 14.0 14.0 14.0 14.0
Joint 18.0 18.0 22.0 22.0
Bulk Density
≮		 Electrode g/cm3 1.66 1.66 1.66 1.66
Joint 1.73 1.74 1.75 1.78
Thermal Expansion Coefficient ≯
(100～600℃)		 Electrode x10-6/℃ 1.5 1.5 1.4 1.4
Joint 1.4 1.4 1.2 1.2
Ash content ≯ % 0.3 0.3 0.5 0.5
Note: Ash content and thermal expansion coefficient are reference indicators.

 

Isostatic graphite physical and chemical indicators

Project Isostatic graphite physical and chemical indicators
Unit Technical Value Technical Value
Bulk Density g/cm3 ≥1.8 ≥1.85
Compressive Strength Mpa 85 90
Flexural Strength Mpa 40 45
Resistivity μΩm 11-13 11-13
Shore hardness -- 55 60
Ash Content ppm 50-500 50-500
Thermal Expansion Coefficient 10-6/℃ 4.1 4.3
Average particle size μm 22 22

 

Donghai isostatic graphite material physical and chemical indicators

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
Thermal expansion coefficient x10-6/℃ 4.8 5.5 4.4
Thermal conductivity W/m·K 104 116 139
Resistivity μΩm 13.0 11.0 9.5

 

High power graphite electrode physical and chemical indicators

Project Unit Nominal Diameter (mm)
High power electrode HP High power electrode II
∮200～∮400 ∮450～∮500 ∮550～∮700 ∮350～∮400 ∮450～∮550
Resistivity
≯		 Electrode μΩm 7.0 7.0 7.0 6.5 6.5
Joint 6.0 6.5 5.8 5.5 5.5
Flexural Strength
≮		 Electrode Mpa 10.5 10.0 10.0 10.0 10.0
Joint 16.0 16.0 16.0 18.0 18.0
Elastic Modulus
≯		 Electrode Gpa 12.0 12.0 12.0 14.0 14.0
Joint 16.0 16.0 16.0 18.0 19.0
Bulk Density
≮		 Electrode g/cm3 1.62 1.62 1.62 1.63 1.63
Joint 1.70 1.70 1.70 1.72 1.73
Thermal Expansion Coefficient ≯
(100～600℃)		 Electrode x10-6/℃ 2.4 2.4 2.4 2.2 2.2
Joint 2.2 2.2 2.2 1.8 1.6
Ash content ≯ % 0.3 0.3 0.3 0.3 0.3
Note: Ash content and thermal expansion coefficient are reference indicators.

 

Imported carbon fiber rigid integral insulation felt physical and chemical indicators

Imported carbon fiber rigid integral insulation felt physical and chemical indicators
Project Unit Technical Value
Density g/cm3 0.2(0.16-0.25)
Carbon content % ＞99.7
Ash Content ppm 20-150
Bending strength Mpa 2.0
Thermal Conductivity W/m·K At 20℃ 0.23
Moisture absorption % ＜1.0
Processing temperature ℃ 2300

 

Impregnated electrode physical and chemical indicators

Project Unit Nominal Diameter (mm)
∮200～∮400 ∮450～∮600
First class First class
Resistivity
Not greater than		 Electrode μΩm 7.0 7.5
Joint 6.0 6.0
Flexural Strength
Not less than		 Electrode Mpa 9.0 8.0
Joint 13.0 13.0
Elastic Modulus
Not greater than		 Electrode Gpa 12.0 12.0
Joint 14.0 14.0
Bulk Density
Not less than		 Electrode g/cm3 1.65 1.65
Joint 1.72 1.72
Ash content not greater than % 0.3 0.3
Thermal expansion coefficient not greater than
(100～6000℃)		 Electrode x10-6/℃ 2.7 2.7
Joint 2.5 2.5
Note: Ash content and thermal expansion coefficient are reference indicators.

 

Graphite felt physicochemical indicators

Graphite felt physicochemical indicators
Project Unit Indicators Remarks
Density g/cm3 0.13,0.15,0.18 Products with higher density can be produced according to customer requirements
Carbon content Graphitization % >99  
Ash Content Graphitization % <0.08  
Thermal conductivity coefficient at 1000℃ W/m·K <0.3 Vacuum
Thermal Expansion Coefficient x10-6/K <3.5 Rt-1000℃ measurement
<6.0 Rt-2000℃ measurement
Compressive strength Mpa ≥0.55 Cross-section direction
Flexural Strength Mpa ≥0.69 Cross-section direction

 

Carbon felt physicochemical indicators

Carbon felt physicochemical indicators
Project Unit Indicators Remarks
Density g/cm3 0.13,0.15,0.18 Products with higher density can be produced according to customer requirements
Carbon content Graphitization % >98  
Ash Content Graphitization % ≤0.01  
Thermal conductivity coefficient at 1000℃ W/m·K <0.3 Vacuum
Thermal Expansion Coefficient x10-6/K <3.5 Rt-1000℃ measurement
<6.0 Rt-2000℃ measurement
Compressive strength Mpa ≥0.55 Cross-section direction
Flexural Strength Mpa ≥0.69 Cross-section direction

 

Purified graphite physicochemical indicators

Technical indicators Purification model
XWT-Ⅰ XWT-Ⅱ XWT-Ⅰ XWT-Ⅱ
Bulk density (g/cm3)(≮) 1.6 1.7 * *
Porosity (%) (≯) 27 23 * *
Flexural strength (Mpa) (≮) 28 30 * *
Resistivity (μΩm) (≯) 10 8 * *
Particle size (mesh) * * 32 250
Ash content (PPm) (≯) 10 10 10 50
Specifications (mm) Φ6*300 Φ8|Φ10|Φ13|Φ15| Length is 300 Spectral pure graphite powder High purity graphite powder

 

SGL isostatic graphite physicochemical indicators

Project Unit R8340 R8488 R8500 R8510 R8650 R8710
Bulk Density g/cm3 1.72 1.77 1.77 1.83 1.84 1.88
Open porosity Vol.% 15 15 14 10 10 10
Average particle size μm 15 10 10 10 7 3
Pore diameter μm 2.2 2.0 1.8 1.8 1.1 0.6
Air permeability 10-2cm2/s 25 25 25 6 2 1
Rockwell hardness   HR10/10080 HR5/10070 HR5/10070 HR5/10090 HR5/10095 HR5/100105
Flexural Strength Mpa 45 50 50 60 65 85
Elastic Modulus Gpa 11 10.5 10.5 11.5 12.5 13.5
Resistivity μΩm 12 16 14 13 14 13
Thermal conductivity coefficient (20℃) Wm-1K-1 105 80 90 105 95 105
Thermal expansion coefficient (20-200℃) 10-6K-1 3.2 4.2 4.2 4.2 4.1 4.7
Ash Content max.% 0.02 0.04 0.02 0.02 0.02 0.02

 

SGL graphite physicochemical indicators

Typical performance parameters Unit Extruded graphite Vibrated molded graphite
HLM* SDR MKUN MKUS**
Average Particle Size μm 800 200 800 800
Bulk Density g/cm3 1.73 1.75 1.67 1.79
Resistivity (Ⅱ/⊥) μΩm 7.8/9.5 8.9 10/12 8/9
Flexural Strength (Ⅱ/⊥) Mpa 19/19 3.3 10/10 18/9
Compressive Strength (Ⅱ/⊥) Mpa 40/39   25/25 41/39
Thermal Expansion Coefficient (20-200℃, Ⅱ/⊥) 10-6/℃ 3.5/3.0 1.8/2.2 3.2/2.3 3.3/2.7
Ash Content ppm ≤800 ≤500 ≤700 ≤700

 

Viscose-based Felt Physicochemical Index

Viscose-based: Viscose-based fibers extracted from wood and plant straw and other fiber raw materials, or artificial fibers made from cotton short fibers through processing and wet spinning. Compared to PAN-based graphite felt, viscose-based graphite felt has better thermal insulation performance, and the absence of oil stains can improve crystallization rate, reduce energy consumption, and shorten processing time. It has high carbon content, high-temperature resistance, corrosion resistance, and low thermal conductivity, especially stable performance under high-temperature conditions, strong chemical corrosion resistance, and good thermal shock resistance, which can save a lot of energy, is easy to process into any shape, and convenient for installation and use in various equipment. In a vacuum or inert atmosphere, the maximum operating temperature is 1800-2500℃, making it an insulation material for various vacuum furnaces and single crystal furnaces.

Viscose-based Felt Physicochemical Index
Project Unit Viscose-based Graphite Felt PAN-based Graphite Felt Viscose-based Carbon Felt
Bulk Density g/cm3 0.09-0.10 0.11-0.13 0.1-0.14
Tensile Strength Mpa 0.10-0.18 0.14-0.25 0.12-0.18
Thermal Conductivity W/m·K 0.06-0.07 0.11-0.14 0.08-0.09
Carbon Content % 99.9 99.8 90
Ash Content ppm 200 500 3.8-4%
Oxygen Loss ℃ 379 445 --
Processing temperature ℃ 2200 2200 ≥1000