Official SGS Test Report: Flexible Stone Certified as Class A Non-Radioactive Material
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Read the SGS radioactivity test report for our Flexible Stone. With exposure indices (Ira & Ir) strictly below 0.1, our material is classified as Class A, making it 100% safe for unrestricted indoor and outdoor applications.
1. Report Overview
This article presents the official SGS test report (Report No. GZIN2509001820CM05-1_EN) evaluating the radioactivity levels of our Flexible Stone. Conducted by SGS-CSTC Standards Technical Services Co., Ltd. according to the Chinese national standard GB 6566-2010, the results confirm that our material is classified as Class A decorative material. This classification ensures the material is entirely safe for human health, making it a top-tier eco-friendly choice in Flexible Stone Engineering for both interior design and exterior Facade Retrofit projects.
2. Data Analysis: The Science of Radiation Safety
According to the test results, the specific activities of Radium-226, Thorium-232, and Potassium-40 are extremely low. More importantly, the Internal Exposure Index (Ira) and External Exposure Index (Ir) are both <0.1.
Engineering Value for Facade Retrofit and Interiors:
- Unrestricted Application (Class A): In the GB 6566-2010 standard, Class A materials have no restrictions on their scope of use. They are approved for Class I civil buildings, including residential homes, schools, hospitals, and kindergartens.
- Health and Eco-Friendly: With exposure indices at less than 1/10th of the national limit, our Flexible Stone contains virtually no radioactive elements. Unlike natural granite or certain stone materials that may emit harmful radon gas, our product provides a 100% safe and healthy environment for building occupants.
3. Test Methodology
The SGS evaluation was conducted strictly under the mandatory national standard GB 6566-2010 (Limits of radionuclides in building materials).
- Test Standard: GB 6566-2010
- Specimen Type: Powder (ground from the original sample).
- Specific Activity Results: Ra-226: 2.73 Bq/kg, Th-232: 6.17 Bq/kg, K-40: 12.87 Bq/kg.
- Exposure Indices: Internal (Ira) < 0.1; External (Ir) < 0.1.
- Conclusion: Class A decorative material (Requirements: Ira ≤ 1.0 and Ir ≤ 1.3).
Note: The test report explicitly states that it is intended for internal quality control and R&D. For official bidding or compliance verification, the specific SGS report number (GZIN2509001820CM05-1_EN) should be referenced.
4. FAQ
Q1: What does “Class A” radioactive material mean?
A: In building material standards, Class A is the highest safety grade. It means the material’s internal and external radiation levels are so low that it can be used in any building, including bedrooms, schools, and hospitals, without posing any health risks.
Q2: Is Flexible Stone safer than natural stone regarding radiation?
A: Yes. Many natural stones (like granite) contain trace amounts of radioactive elements and can emit radon gas, requiring careful testing before indoor use. Our Flexible Stone is an engineered inorganic composite with exposure indices <0.1, making it completely free of radiation hazards.
Q3: Can this material be used inside hospitals or schools?
A: Absolutely. Because it is certified as a Class A material and passes other eco-friendly standards, it is an ideal, non-toxic choice for sensitive environments like schools, hospitals, and residential interiors, as well as for exterior Facade Retrofit projects.
Q4: What are the Internal (Ira) and External (Ir) exposure indices?
A: These indices measure the radiation emitted by the material. The national standard requires Ira ≤1.0 and Ir ≤1.3 for Class A materials. Our results are both <0.1, meaning the radiation level is practically negligible.