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ASTM B265 and GB/T 3621 are two different standards that specify the requirements for titanium and titanium alloy plates/sheets. Here are the key differences between these standards:
Geographic Origin: ASTM B265 is an American standard developed by ASTM International, which is widely recognized and used internationally. On the other hand, GB/T 3621 is a Chinese national standard developed by the Standardization Administration of China (SAC) and is primarily used within China.
Scope and Coverage: ASTM B265 covers the general requirements for titanium and titanium alloy plates and sheets, including chemical composition, mechanical properties, dimensions, tolerances, and surface conditions. It provides specifications for various grades of titanium and titanium alloys. GB/T 3621 also covers the requirements for titanium and titanium alloy plates and sheets, including chemical composition, mechanical properties, dimensions, tolerances, and surface conditions. However, it may have some variations or additional requirements specific to the Chinese market.
Grade Designation: Both standards provide grade designations for different types of titanium and titanium alloys. However, the specific grade designations and compositions may differ between ASTM B265 and GB/T 3621. It is important to refer to the specific standard to understand the grade designations and corresponding properties.
Testing and Certification: ASTM B265 specifies the testing methods and requirements for evaluating the properties of titanium plates and sheets, including mechanical testing, chemical analysis, and non-destructive testing. It also provides guidelines for certification and marking of the products. GB/T 3621 may have its own testing and certification requirements specific to the Chinese market.
Language and Terminology: ASTM B265 is written in English and uses terminology commonly used in the international titanium industry. GB/T 3621 is written in Chinese and uses terminology specific to the Chinese market. This difference in language and terminology may require translation or interpretation when comparing or using the standards.
It is important to note that when selecting and using titanium plates or sheets, it is recommended to consult the specific standard applicable to your region or industry. Manufacturers and suppliers typically provide products that meet the requirements of the relevant standard, whether it is ASTM B265 or GB/T 3621, ensuring that the materials meet the necessary quality and performance standards.
