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Carbon-carbon bolts are special fasteners made of carbon fiber reinforced carbon matrix composite material. Different from ordinary graphite bolts and metal high-temperature bolts, they can stably withstand temperatures above 2000°C under vacuum or inert atmosphere. They will not suffer from high-temperature creep, softening or seizure failure like molybdenum, tungsten and stainless steel bolts.
The material features an extremely low thermal expansion coefficient. The thread size remains stable under thermal cycling conditions, with excellent thermal shock resistance and low risk of thread chipping and breakage. Carbon-carbon bolts are non-magnetic and high-purity without metal precipitation. They are the preferred fastening choice for thermal field assembly of photovoltaic single crystal furnaces, semiconductor sintering furnaces and CVD equipment where high cleanliness is required.
Compared with metal counterparts, they have light weight and high specific strength, suitable for aerospace thermal protection structures and high-temperature metallurgical hot-pressing tooling. Jiecheng Graphite provides custom machining of thread specifications, lengths and head types. We can supply matched carbon-carbon nuts and carbon-carbon screws as a complete set with controllable thread tolerance to meet your whole thermal field assembly solution.
