At our factory, quality is the cornerstone of our EPDM rubber granules production.
Every batch of EPDM granules undergoes rigorous testing to ensure it meets and exceeds international standards for safety, durability, and performance.
Below is our official test report, showcasing the exceptional quality of our products across key performance indicators.
Complete EPDM Rubber Granules Test Data
Our EPDM rubber granules are tested for critical properties that determine their suitability for playgrounds, running tracks, basketball courts, and other surfacing applications.
All test results far exceed the standard requirements, confirming their premium quality.
Serial number Test project Standard requirements Test results Judge
| Test Project | Standard Requirement | Test Result | Judge | |
| 1 | Compression recovery rate, % | 90 | 98.5 | Qualified |
| 2 | The springback value, mm | 20 | 26 | Qualified |
| 3 | Hardness | 30-50 | 47 | Qualified |
| 4 | The tensile strength, mpa ≥ | 0.5 | 1.74 | Qualified |
| 5 | Tensile elongation, % ≥ | 90 | 103.6 | Qualified |
| 6 | lame retardant level | I | I | Qualified |
Detailed Analysis of Test Results
1. Compression Recovery Rate: 98.5% (Standard ≥ 90%)The compression recovery rate measures the ability of EPDM granules to return to their original shape after being compressed. Our result of 98.5% far exceeds the 90% standard, ensuring the surface remains elastic and non-deformable even under heavy, long-term use—critical for high-traffic areas like playgrounds and tracks.
2. Springback Value: 26mm (Standard ≥ 20mm)
A higher springback value indicates better shock absorption and cushioning. Our EPDM granules achieve 26mm, well above the 20mm requirement. This provides excellent protection for joints, reduces impact injuries, and enhances user comfort during activities.
3. Hardness: 47 (Standard 30-50)
Our EPDM granules have a hardness of 47, perfectly within the optimal 30-50 range. This balance ensures the surface is neither too soft (which causes sinking) nor too hard (which lacks cushioning), making it ideal for safe, comfortable play and exercise.4. Tensile Strength: 1.74 mpa (Standard ≥ 0.5 mpa)
Tensile strength measures resistance to breaking under tension. Our result of 1.74 mpa is over 3 times the 0.5 mpa standard, guaranteeing exceptional durability and resistance to tearing, even in extreme weather and heavy use.
5. Tensile Elongation: 103.6% (Standard ≥ 90%)
With a tensile elongation of 103.6%, our EPDM granules stretch easily without cracking, adapting to temperature changes and ground movement. This prevents surface damage and extends the lifespan of your project.
6. Flame Retardant Level: I (Standard I)
Our EPDM granules meet the highest Level I flame retardant standard, ensuring they do not support combustion and enhance safety in public spaces, schools, and residential areas.
Why Our Test Results Matter for Your Project
These test results confirm that our EPDM rubber granules are:• Ultra-durable: Resist deformation, tearing, and weathering.
• Safe & comfortable: Excellent shock absorption and non-slip properties.
• Reliable: Consistent quality for long-term performance.
• Compliant: Meet international safety and environmental standards.
Why Choose Our Factory’s EPDM Rubber Granules?
• Strict Quality Control: Every batch is tested to ensure consistency.• Factory Direct: Competitive prices with no middlemen.
• Customizable: Tailor particle size, color, and thickness to your needs.
• Global Shipping: Reliable delivery to over 50 countries.
• Certifications: Meet REACH, RoHS, and other international standards.
Conclusion
Our EPDM rubber granules’ exceptional test results speak for themselves.
With superior compression recovery, tensile strength, and flame retardancy, they are the perfect choice for high-quality, long-lasting surfacing projects.
Contact us today to request a full test report, sample, or customized quote for your EPDM project.