Overview
Graphite plates and blocks are manufactured through high-temperature processing of petroleum coke or pitch coke, yielding materials with exceptional thermal and electrical properties. Industrial grades typically range from 90-99.9% carbon purity, with isotropic and extruded variants available for different applications. These materials are indispensable in high-temperature environments due to graphite's unique ability to retain strength at elevated temperatures (up to 3000°C in inert atmospheres). The plates and blocks are machined to precise dimensions for integration into industrial systems where metal alternatives would fail.
Physical and Chemical Properties
Graphite's layered crystal structure gives it anisotropic properties—thermal and electrical conductivity is highest parallel to the grain direction. Typical industrial graphite has a thermal conductivity of 70-150 W/(m·K) and electrical resistivity of 8-15 μΩ·m at room temperature. The material exhibits exceptional chemical resistance, withstanding most acids, alkalis, and organic solvents at moderate temperatures. Oxidation begins around 400°C in air, requiring protective atmospheres for high-temperature use. Mechanical properties include compressive strength of 20-100 MPa and flexural strength of 10-50 MPa, depending on density and processing method.
Main Applications
In metallurgy, graphite blocks serve as crucibles, molds, and continuous casting dies. The semiconductor industry uses ultra-high purity grades for wafer processing equipment. Chemical plants utilize graphite plates in heat exchangers and reactor linings for corrosive media handling. Other significant applications include EDM electrodes (where graphite's machinability is crucial), fuel cell bipolar plates, and nuclear reactor moderators. Recent innovations employ graphite blocks in lithium-ion battery anodes and thermal management systems for electric vehicles.
Safety and Storage
While bulk graphite is non-toxic, machining produces fine dust requiring NIOSH-approved respirators. Facilities should use local exhaust ventilation and wet methods to suppress dust during processing. Store away from strong oxidizers as graphite can react violently with certain chemicals like fluorine. For high-temperature applications, gradual heating is recommended to prevent thermal shock. Graphite components should be inspected for cracks after thermal cycling. In case of fire, use dry chemical extinguishers—water may damage hot graphite and produce steam hazards.
B2B Procurement Guide
Key specifications to evaluate include bulk density (typically 1.7-1.9 g/cm³ for standard grades), particle size (fine grain for detailed machining), and ash content (<0.5% for most industrial uses). Isotropic grades command premium pricing but offer uniform properties in all directions. Lead times vary from 2-8 weeks for standard sizes; custom-machined components may require longer. Consider ordering from manufacturers with in-house machining capabilities to ensure dimensional tolerances (typically ±0.1mm for precision parts). For large orders, negotiate based on graphite electrode market trends which influence raw material costs.
Related Manufacturers
- 主营：石墨块、石墨板、高纯石墨管、电极制品
- 主营：国标改质沥青、改制煤沥青、改质沥青、石墨方石墨板铝厂用、国标中温沥青、中温煤沥青、中温沥青出口、改质沥青出口、煤沥青、煤沥青厂家、煤沥青出口、预焙阳极用沥青、无水焦油、沥青粉、高温煤沥青、球沥青、沥青片、改质沥青厂家、高温沥青块、中温沥青块、液体沥青
- 主营：石墨电极、石墨匣钵、石墨舟皿、石墨坩埚、高纯石墨管
- 主营：石墨板
- 主营：回收石墨、石墨电极、收购二手
- 主营：石墨卷材、高温石墨、碳石墨板、石墨复合板、高纯石墨垫片、柔性石墨板、石墨尼龙卷、电镀石墨板、高纯石墨板、柔性石墨带、柔性石墨纸、石墨纸定制、超薄石墨纸、钢膨胀石墨、石墨板定制、耐酸碱石墨板、包边散热石墨、铝材挤压石墨、耐腐蚀石墨板、石墨板、石墨纸、石墨带、柔性石墨盘根、石墨盘根、聚苯保温板
- 主营：石墨烯、石墨板、膨胀石墨、高纯石墨、等静压石墨、石墨棒、石墨纸、石墨粉、石墨模具、石墨换热器、石墨管、石墨乳、石墨矿、石墨环、石墨设备、石墨坩埚、石墨块、石墨柱、石墨粒、石墨舟、石墨套、石墨螺丝、石墨片、鳞片石墨、增碳剂
- 主营：铝型材、铝合金、结构钢、石墨板、石墨粉、石墨棒、导电石墨、柔性石墨、石墨坩埚、石墨定制、石墨材料、膨胀石墨、石墨匣钵、石墨电极、国标棒、刹车片、西格里、齿轮钢、不锈钢板、热轧钢板、镁合金棒、国标铝板、防火涂料、铸造涂料、耐火材料
- 主营：止推轴承、球面轴承、圆面轴承、石墨架、石墨板、石墨棒、石墨槽、石墨动环、石墨滚轮、石墨垫片、定制石墨、石墨分环、石墨轴套、石墨电刷、石墨轴承、石墨模具、石墨坩埚、石墨转子、石墨方轴承、石墨密封片、石墨支架棒、石墨毛胚料、小轴承垫片、屏蔽泵轴承、组合密封环
- 主营：石墨坩埚、石墨板、石墨棒、石墨片、石墨套、石墨轮、石墨环、石墨槽板、石墨槽舟、石墨垫片、石墨垫圈、石墨法兰、石墨滚轮、石墨卡瓣、石墨螺栓、石墨螺丝、石墨气槽、石墨托盘、石墨匣钵、石墨压头、石墨油槽、石墨圆盘、石墨圆片、石墨制品、石墨舟皿
- 主营：聚苯板、保温板、外墙保温、石墨板、石墨聚苯板、保温聚苯、白色泡沫、泡沫板外墙、泡沫箱、成型包装、泡沫制品
- 主营：高纯石墨、石墨板、石墨模具、石墨棒、石墨粉、石墨乳、鳞片石墨、土状石墨、石墨管、柔性石墨
- 主营：石墨棒、石墨板、石墨电极、高纯石墨、石墨坩埚、石墨异形件、石墨焊接块
- 主营：高纯石墨、等静压石墨、EDM电火花石墨、石墨电极、石墨粉、石墨坩埚、石墨板、石墨棒、石墨模具、石墨转子、石墨轴承、石墨环、石墨热场、石墨烯、石墨片、石墨柱、石墨套、放热焊接石墨模具、石墨换热器、石墨散热器、石墨毡、膨胀石墨、增碳剂、真空泵碳片、碳毡
- 主营：蛭石粉、沸石粉、麦饭石粉、石墨、保温涂料、防火涂料、彩色树皮、耐火材料、珍珠岩粉、树皮、彩色玻璃珠、生物质颗粒、纳米陶瓷仿瓷砂、兰花栽培基质、白炭黑、钙粉、重晶石、滑石粉、金刚砂、硅藻土、氧化铁、膨润土、椰糠、高岭土