When working in high-temperature environments, insulation cannot be compromised.
It must be effective, resistant… and above all, safe.
In recent years, more and more companies are choosing a new generation of materials: so-called calcium-free materials, made of high-purity quartz fibre.
Why? Because they can withstand extreme heat without triggering dangerous chemical reactions.
A smart choice — and an increasingly popular one — for those who want not only good performance, but also greater protection for workers, fewer hidden risks and greater regulatory peace of mind.
What are ‘calcium-free’ materials?
They are advanced technical materials, free of components that can trigger unwanted reactions at high temperatures, such as calcium, sodium or potassium oxides.
They are obtained through a chemical purification process that allows a composition of over 95% silicon dioxide (SiO₂) to be achieved, with the addition of alumina to increase stability.
Compared to traditional insulators – rock wool, ceramic fibres, untreated glass fibres – they offer:
- Greater thermal resistance (up to 1200°C);
- Dimensional stability even in aggressive environments;
- No release of hazardous substances.
In summary: these materials are designed to protect systems and people, even in critical areas such as expansion joints, turbines, compensators and flanges.
Why are they so important?
Because not all insulating materials are the same.
At certain temperatures, traditional calcium-based insulating materials can react with chromium and oxygen steel, forming hexavalent chromium — a substance classified as a category 1B carcinogen.
With calcium-free materials, this risk is eliminated at source: there is no calcium, so no reaction can occur.
This means:
- Less exposure for operators;
- No extraordinary remediation;
- Greater ease in complying with regulations (such as the REACH Regulation and Legislative Decree 81/2008);
- Fewer surprises during environmental or HSE audits and inspections.
The advantages for your company
Adopting calcium-free materials means:
- Reducing the chemical risks associated with the formation of hexavalent chromium.
- Protecting workers’ health with solutions that are safe even in critical conditions.
- Streamlining HSE procedures and avoiding costly remediation.
- Extending the life of insulation even in aggressive environments.
- Dealing with fewer unexpected events, greater control and regulatory compliance.
It is not just a technical choice.
It is a more conscious, modern and responsible way of working.
Green Flex: More than just a product, a responsible choice
Choosing safer materials means investing in more reliable systems, better protected operators and more robust companies.
And calcium-free materials, such as those used in the production of the Green Flex line, are now the technical standard for those who work at high temperatures and want to eliminate the risk at source.
Green Flex is designed not to generate hexavalent chromium, even in the most critical conditions and to offer stable, long-lasting performance that complies with the most demanding regulations.
Would you like to know if your plant still uses potentially hazardous materials?
Contact New Componit team today for a free consultation.
We will analyse the critical points together and help you choose the right solution to work safely, with more control and fewer unexpected events.
Because good insulation is not just a barrier.
It is a competitive advantage that protects, simplifies and improves every aspect of your operations.
General Manager
Expert in industrial insulation and expansion joints. Supports companies in innovation and the search for reliable and safe solutions.
