Carbon-Carbon Composite – The Existing Material with Best High Temperature Resistance

  • High carbon content, low density.
  • High strength, low expansion coefficient.
  • High temperature resistance and good ablative resistance.
  • Good wear and tear resistance.
Carbon-carbon composite U plates and bolts are displayed.
Description

Carbon-carbon composite (c-c composite) is a composite with carbon as matrix and carbon fiber or its products (carbon felt or carbon cloth) as reinforcement, so it is also known as carbon fiber composite (CFC). The carbon matrix can be pyrolytic carbon obtained by chemical vapor deposition, as well as resin carbons prepared by carbonization and graphitization of synthetic resins or asphalt.

Carbon-carbon composite is divided into 2D, 2.5D and 3D types by weaving direction. It features low density (< 2.0 g/cm3), high strength, high specific modulus, high thermal conductivity, low expansion coefficient, good fraction performance, excellent thermal shock resistance and high dimensional stability. It is one of the few alternative materials for applications 1650 °C above and is therefore considered as one of the most promising high-temperature materials. It is widely used in the fields of aerospace, nuclear energy, chemical and pharmaceutical, and serves as aircraft brake disk materials, rocket engine nozzles, drone structural components, material racks in the heat treatment process, furnace beds, load-bearing plates, protective irregular-shaped plates, bolts and nuts, etc.

Product Display
A close shot of L-shaped CFC plate

CFC L Channels

Many CFC bolts and nuts in different sizes are stacked together.

CFC Bolts & CFC Nuts

CFC fixtures are placed for assembly.

CFC Fixtures

CFC hot press mould is placed on the ground.

CFC Hot Press Mould

Properties
  • Physical Property
    After high temperature treatment, carbon-carbon composite has a high carbon content (> 99%), low density and good mechanical property. As the carbon has a high melting point and excellent resistant to high temperature, corrosion and thermal shock, so carbon-carbon composite has excellent resistant to acids, bases and salts.
  • Mechanical Property
    Carbon-carbon composite has good strength and elastic modulus mechanical property, excellent wear & tear resistance.
  • High Temperature Stability
    Carbon-carbon composite can withstand up to 2500 °C high temperature. It is insensitive to thermal stress and has good ablative resistance.
  • Chemical Property
    The difference between carbon fiber and metal materials is that carbon fiber is a non-metal material. Therefore, carbon fiber materials have low electrochemical activity, outstanding corrosion resistance and anti-aging properties, and can adapt to a variety of working environments and prolong the service life of carbon fiber products.

Comprehensive Performance Evaluation. Carbon-carbon composites are 42% lighter than that of aluminum composites, 3 times lighter than that of titanium composites, 4–5 times lighter than that of steel composites. Besides, its tensile strength is 7–9 times higher than that of steel materials and has good thermal shock resistance, high temperature resistance and cold resistance. Carbon-carbon composites have few production processes and save material and manufacturing costs, safe and reliable.

Specifications
Table 1: Carbon-Carbon Composite Performance Parameters
Model Density (g/cc) Compressive Strength (Mpa) Flexural Strength (Mpa) In-Plane Shear Strength Ash (ppm) CTE (10–6/K) Thermal Conductivity Heat Treatment Temperature Static Friction Coefficient (μ) Dynamic Friction Coefficient (μ) Application
2D ≥ 1.35 125 85 ≥ 2200 °C CFC plates, L channels, U channels
2.5D ≥ 1.5 120–150 80–100 12–15 < 200 0.5–1.5 30–50 ≥ 2200 °C CFC plates, fasteners, hot press mould
2.5D 1.75 150 80–100 12 < 200 ≥ 2200 °C 0.12–0.15 0.3–0.4 CFC brakes
Notes:
  • If you need 3D & 4D carbon-carbon composites, please contact us directly.
  • 1 MPa = 10.2 kgf/cm2; 1 W/m.k = 0.86 kcal/cm.h.°C
  • These properties are typical values and not guaranteed.
Advantages Over Other Materials
C-C composite vs Metal
  • Better thermal resistance;
  • Extreme low thermal expansion coefficient;
  • lighter weight (1/5 of iron);
  • Better corrosion resistance.
C-C Composite vs Graphite
  • Higher strength;
  • Better toughness and higher breaking resistance.
C-C Composite vs Ceramic
  • Higher breaking resistance;
  • Not easy to be bonded together (will not glue together);
  • Good thermal shock resistance;
  • Easy machining.
C-C Composite vs Resin
  • Better thermal resistance;
  • Better corrosion resistance;
  • Extreme high wear resistance.