At T Grup Cam, we perform Heat Soak Testing (HST) to enhance the safety and reliability of our toughened glass. This process helps reduce the risk of spontaneous breakage caused by nickel sulfide (NiS) inclusions, ensuring higher durability and performance in demanding applications.
What is Heat Soak Testing?
The HST process involves placing toughened glass in a controlled heat soak chamber, where it is heated to approximately 290°C (554°F) for a specific period. This controlled heating accelerates the expansion of any nickel sulfide inclusions, causing defective glass to break before installation, rather than after being put into use.
Benefits of HST:
✅ Prevents Spontaneous Breakage – Detects and eliminates glass with hidden impurities.
✅ Enhanced Safety & Reliability – Ensures only high-quality, defect-free glass is installed.
✅ Compliance with International Standards – Meets industry safety regulations for building façades, balustrades, and structural glazing.
✅ Essential for Critical Applications – Recommended for high-risk areas such as curtain walls, overhead glazing, and public spaces.
Applications:
By integrating Heat Soak Testing, T Grup Cam ensures that our toughened glass meets the highest safety standards, providing peace of mind and long-term reliability for architects, engineers, and project developers.
At T Grup Cam, we prioritize safety and durability in all our toughened glass products. Understanding the risk of spontaneous breakage due to nickel sulfide (NiS) inclusions has led to the development of the Heat Soak Test (HST)—a preventive method that identifies and eliminates defective glass before installation.
During HST, the toughened glass is heated to approximately 290°C for a specified duration, as per international safety standards. This process accelerates any hidden nickel sulfide expansion, causing nearly 99% of defective panes to break inside the controlled testing chamber rather than after installation.
With increasing safety regulations and heightened awareness among architects, contractors, and investors, many large-scale projects now require HST-tested glass.
🔹 Prevents Costly Replacements – Broken glass must be promptly replaced, often requiring lifting cranes or specialized equipment, leading to high repair costs.
🔹 Enhances Building Security – A broken façade or glazing unit can leave buildings vulnerable, compromising security and access control.
🔹 Reduces Injury Risks & Legal Issues – If a high-elevation glass pane shatters, even small, blunt-edged fragments can injure pedestrians below, leading to legal liabilities for building owners and managers.
At T Grup Cam, we ensure that our HST toughened glass meets the highest safety standards, providing peace of mind, durability, and reliability for modern architectural and industrial applications.
| Glass thickness [mm] | Minimum panel dimensions [mm] | Maximum panel dimensions [mm] | |
| HST | 4-19 | Minimum dimension of longer side 400 mm | 3200×7000 |
In order to facilitate the changes, we have adopted ISO 14001, the worldwide management system for environmental protection.
