GB/T 39693.3-2021 Determination of Ultra-low Hardness of Focused Vulcanized or Thermal Plasticity Rubber. It specifies the method of measuring test force Hardness using ultra-low rubber Hardness (VLRH) ruler. Describe the test principle, put forward requirements for the accuracy of test equipment, indenter specifications, etc., explain the main points of sample preparation in detail, standardize the test process, including test force application, holding time and reading method. According to this standard, ultra-low Hardness rubber can be accurately determined, providing key data for quality control and performance evaluation of special rubber materials, and assisting related industries Product Research & Development and Application.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G40 | ICS | 83.060 |
| Release Date | 2021-03-09 00:00:00 | Implementation Date | 2021-10-01 00:00:00 |