SIGRAFINE® Die-Molded Carbon and Graphite

The material class of die-molded carbon and graphite contains amorphous carbon as well as graphite and the so-called carbon graphite, a composite material containing both hard carbon and graphite. The materials have a fine to ultrafine granulation and can also show a high anisotropy due to the axial forming process. Extremely wide property profiles result from this large material variety with regard to mechanical strength, friction, and conductivity.Materials were designed for example to match specific tribological or electrical properties. These can be even further enhanced by impregnation with resins, phosphates, or metals. In contrast to the other synthetic graphite shaping processes the die-molding technology also allows for applying the pressed to size technology (PTS). This near net shape pressing is highly efficient and is of considerable advantage since complex parts can be produced in high volumes, cost efficient, and with minimum material input.

Typical properties of die-molded carbon and graphites

Low wear and long-term stability

Our die-molded carbons and graphites boast low material wear and thereby long service life. We offer a variety of types to allow us to respond to different frame conditions.

Safety from temperature and thermal shock resistance

Of all known materials, graphite has the highest thermal shock resistance. Thanks to their high purity, SIGRAFINE materials of graphite and carbon-graphite contribute significantly to process reliability.

Adjustable expansion behavior

Good physical compatibility of the materials employed is also relevant. To achieve this they must display the same or similar thermal expansion coefficients. By targeted selection of formula components, we can set the coefficient of expansion of our SIGRAFINE specialty graphite to the values of the relevant partner material.

Thermal conductivity – a key property

SIGRAFINE materials also boast excellent thermal conductivity, which is usually more pronounced in graphite than in the surrounding components, thereby preventing overheating and excessive abrasion, and extending the service life of the system.

Application competency and materials consulting

Many factors influence wear behavior: material pairing, sliding speed, strain, finish of bearing surfaces and operating conditions. We take a holistic view of the tribological system to find the material solution best suited to your specific requirements.

Applications where die-molded carbon and graphite is used

Outstanding mechanical, thermal and chemical properties make our specialty graphite the go-to choice for a multitude of automotive and mechanical-engineering applications.