GB/T 33920 "Flexible Graphite Sheet – Test Methods" is a method standard applicable for the chemical composition testing of flexible graphite sheets. This standard specifies the determination methods for key chemical properties such as ash content, fixed carbon content, thermal weight loss, sulfur content, chlorine content, and fluorine content, serving as the basis for evaluating material purity, thermal stability, and specific impurity levels. The testing items mentioned in the standard, such as elemental content determination, typically require the use of corresponding chemical analysis instruments, such as high-temperature muffle furnaces, micro sulfur-chlorine analyzers, or ion chromatographs, to achieve precise quantification.
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 | J22 | ICS | 21.140 |
| Release Date | 2025-03-28 00:00:00 | Implementation Date | 2025-10-01 00:00:00 |
