Green Critical Minerals’ VHD graphite has market-leading density with proven scalability

Green Critical Minerals’ technology produces record-breaking very high density graphite blocks with consistent results proving its scalability.

Green Critical Minerals’ VHD graphite blocks have the highest density ever recorded. Pic: Getty Images

Special Report: Green Critical Minerals has scored another win for its very high density (VHD) graphite technology after testing found it delivered blocks with the highest density (2071kg/m3) ever recorded for VHD blocks.

• Green Critical Minerals technology produces highest density VHD blocks ever recorded
• Density exceeds industry standard for nuclear and electrode graphite
• It combines with proven high thermal diffusivity and conductivity to make it idea for next generation cooling solutions

It also achieved strong consistency across multiple samples with an average density of 2011kg/m3, which easily exceeds industry standard densities for nuclear graphite (1700-1900kg/m3) used as a high-temperature control-rod material and electrode graphite (1550-1800kg/m3) used in batteries.

The super high density also combines with VHD graphite’s previously proven high thermal diffusivity  to deliver rapid heat movement and efficient dissipation, making it the ideal material to reduce overheating risks in AI processors, data centre servers, semiconductors and advanced electronics.

Green Critical Minerals (ASX:GCM) noted that the result also proves the commercial scalability of its VHD tech, positioning it as the leading material for next-generation cooling solutions as it significantly outperforms traditional materials like copper and aluminium.

“These results mark a defining moment for our VHD graphite. We have not only been able to replicate previous density results but surpass the peak density ever recorded for VHD graphite. These results are a tribute to the simplicity, repeatability and scalability of GCM’s VHD Technology process,” managing director Clinton Booth said.

“Combining these record-breaking density results with our previously released results on the thermal properties of VHD graphite is further validation that we are delivering a material that will enable real-world system improvements in heat dissipation, a critical consideration in AI data centres and high-performance electronics. 

“This is another critical step in proving the commercial scalability of VHD Technology as a next generation cooling solution for a rapidly growing market.”

Density testing

The density testing carried out by GCM are particularly noteworthy as they demonstrate a repeatability of results, which validates the scalability of the process.

Given that the technology can produce VHD blocks in just 24-36 hours at around half the temperature (1500C v 2900C) of traditional synthetic graphite production processes, this has the potential to revolutionise the production of VHD graphite for a range of advanced uses.

This is supported by the narrow sample-to-sample variation, which confirms the repeatability and manufacturing precision.

Additionally, higher density reduces porosity, which improves both thermal diffusivity and conductivity as pores act as conduction discontinuities in a material.

GCM will now advance its VHD tech towards commercial adoption by completing thermal performance testing, modelling and designing VHD graphite heat sinks in real-world environments, engaging with potential customers to validate applications, and plan full-scale production to meet forecast market demand.

This article was developed in collaboration with Green Critical Minerals, a Stockhead advertiser at the time of publishing. 

This article does not constitute financial product advice. You should consider obtaining independent advice before making any financial decisions.

Originally published as Green Critical Minerals’ VHD graphite has market-leading density with proven scalability