
High-Quality Supplier Silicon Carbide Graphite Crucible / Isostatic Graphite Crucible for Smelting
We supply high quality isostatic graphite blocks and rounds in high purity, high strength and high bulk density.
Description
The research and development of a batch of high-tech CFC heater, Rp Graphite Electrode, graphite purification process has cultivated our company's new economic growth point. We implement continuous improvement of all elements such as processes, procedures, equipment and personnel. Our vision: with unremitting efforts, improve our industrial structure, enhance the scale of operation, and create a highly integrated enterprise competitiveness with product strength, brand strength and cohesion.
High-Performance Isostatic Graphite for Heating Elements
At SHJ CARBON, with over 25 years of expertise, we are a trusted Isostatic Graphite Manufacturer specializing in high-performance graphite products. We understand that industries require precise, durable, and high-temperature resistant graphite components to optimize production processes. Whether you're looking to replace your graphite hot zone, enhance furnace performance, or source high-quality graphite elements, we deliver customized solutions engineered to meet the highest industry standards, ensuring maximum performance in even the most demanding conditions.

SHJ Isostatic Graphite Specifications
| Grade | Bulk Density |
Shore Hardness |
Ash Content |
Compressive Strength |
Flexural Strength |
Resistivity | Thermal Grain Conductivity Size |
Grain Size |
| ■IS-11 | 1.82g/cm³ | 63HSD | 50PPM | 115Mpa | 52Mpa | 10~15μQm | 120W/mk | 8~10μm |
| ■IS-15 | 1.90g/cm³ | 72HSD | 50PPM | 160Mpa | 70Mpa | 11~13μΩm | 110~120W/mk | 5μm |
| ■IS-14 | 1.85g/cm³ | 68HSD | 50PPM | 120Mpa | 62Mpa | 11~13μΩm | 100~120W/mK | 7μm |
| ■IS-41 | 1.78g/cm³ | 76HSD | 100PPM | 122MPa | 69MPa | 15.7μΩm | - | 10μm |
| ■IS-42 | 1.78g/cm³ | 65 HSD | 300PPM | 113Mpa | 57Mpa | 12.5μΩm | - | 13μm |
| ■ IS-51 | 1.81g/cm³ | 60HSD | 50PPM | 90Mpa | 45Mpa | 11~14μΩm | - | 12μm |
| ■IX-11 | 1.80g/cm³ | 85HSD | 200PPM | 180Mpa | 90Mpa | 25μQm | - | 4μm |
| ■IX-12 | 1.81g/cm³ | 92HSD | 200PPM | 190Mpa | 92Mpa | 25μΩm | - | 4μm |
| ■FM-12 | 1.75g/cm³ | 42HSD | 500PPM | 65Mpa | 38Mpa | 8~11μΩm | 110~120W/mk | 13μm |
| ■FM-13 | 1.85g/cm³ | 48HSD | 50PPM | 85Mpa | 46Mpa | 8~10μΩm | 130~140W/mk | 13μm |
| ■FM-22 | 1.80g/cm³ | 50HSD | 1000PPM | 75Mpa | 38Mpa | 12μΩm | - | 13μm |
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Applications in High Temperature & Vacuum Furnace Systems

The vacuum and sintering furnace is where SHJ CARBON's isostatic graphite truly proves its value.
Inside these demanding environments, our graphite heaters and connectors serve as the core heating structure - delivering stable temperature distribution, precise electrical performance, and long service life even under continuous high-temperature operation.
Each heater is carefully engineered and machined to maintain dimensional stability and purity, ensuring reliable operation throughout repeated heating cycles.
Beyond vacuum systems, SHJ CARBON's isostatic graphite materials are also trusted in crystal growth and diffusion equipment, CVD and PVD coating systems, semiconductor heat-treatment lines, and industrial test furnaces.
In every application, the same principle applies: consistent performance, controlled thermal expansion, and reduced downtime.

Integrated Solution - From Graphite Material to Heater Assembly
SHJ CARBON provides one-stop graphite solutions, covering every stage from material selection to final product integration.
|
Customer Requirement |
SHJ CARBON Solution |
|
Need for high-temperature stability |
Tailored isostatic graphite grades (1.83–1.95 g/cm³) |
|
Custom heater geometry or connector design |
Precision CNC machining & 3D simulation |
|
Quality consistency & lifespan testing |
Batch control, FEM design validation |
|
International supply & documentation |
ISO 9001 certified system + export technical files |
We don't just supply graphite - we deliver engineered reliability for your furnace systems.
Reliable Isostatic Graphite Solutions for Every Industry Need
With over 25 years of experience in graphite and carbon materials, SHJ CARBON has earned a reputation as a reliable partner for industries like vacuum furnace manufacturing, semiconductor equipment, and precision heat treatment. We stand out for our stable supply and machining capabilities, which are backed by a dedication to continuous improvement in both process and technology.
As China's isostatic graphite industry evolves, SHJ CARBON stays ahead by adopting the latest production technologies and tighter quality controls. We focus on delivering products that meet international standards, ensuring superior performance and consistency. Our approach has always been about more than just materials-it's about providing our customers with innovative solutions that improve furnace performance, safety, and efficiency, all while staying aligned with industry advancements.

Precision Materials.
Reliable Performance. Proven in Heat.
Full traceability and controlled material consistency
Proven export performance across 30+ countries
Ongoing R&D investment in graphite densification&machining
Engineering support from prototype to long-term batch supply
Frequently Asked Questions
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1. What is an isostatic graphite heater used for?
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It's used as a heating element inside vacuum or high-temperature furnaces, providing uniform thermal output and stable resistance in extreme environments.
2. Why is isostatic graphite preferred for vacuum furnaces?
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Because of its uniform structure, high purity, and isotropic strength, it delivers longer lifespan and greater stability than molded or extruded graphite under high thermal stress.
3. How long does an isostatic graphite heater last?
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Typically 1.5–3 years, depending on operating temperature, cycle frequency, and cooling method. Proper installation and current control extend its service life significantly.
4. Can isostatic graphite components be customized for my furnace?
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Yes. SHJ CARBON provides CNC-machined components tailored to your furnace size, design, and required electrical specifications.
5. What is the difference between isostatic graphite and molded graphite?
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Isostatic graphite has uniform properties in all directions due to equal-pressure pressing, offering better mechanical strength, precision, and reliability - especially in demanding high-temperature environments.
Get Your Custom Isostatic Graphite Solution
Whether you're upgrading an existing furnace or building a new system, our engineers can recommend the most suitable graphite grade, geometry, and connection design.
Send us your drawings, furnace type, or temperature range - we'll provide a tailored quotation and technical proposal within 24 hours.
Our company will be professional-oriented, adhering to first-class technology, products, and services to participate in the development of the High-Quality Supplier Silicon Carbide Graphite Crucible / Isostatic Graphite Crucible for Smelting industry, keeping this professional field synchronized with the international advanced level. Also willing to engage in High-Quality Supplier Silicon Carbide Graphite Crucible / Isostatic Graphite Crucible for Smelting manufacturers in the industry, carry out close cooperation. Jointly develop the domestic High-Quality Supplier Silicon Carbide Graphite Crucible / Isostatic Graphite Crucible for Smelting business. We will continue to adhere to the company's business philosophy, continue to provide users with better services, and achieve all-round mutual benefit and win-win results. With the rapid development of modern science and technology, the information management of our company is increasingly tending to information, network and highly integrated.
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