GB/T 4197-1984

Abolished

Method for measuring the average grain size of sintered bar and rod of tungsten molybdenum and alloys

钨钼及其合金的烧结坯条、棒材晶粒度测试方法

Standard Type
GBT
ICS
77.040.30
CCS
H23
Status
Abolished
Issue Date
1984-03-09
Implementation
1984-11-01
Centralized Committee
工业和信息化部（电子）
Issuing Authority
工业和信息化部（电子）

Application Summary AI generated

This standard specifies the metallographic method for measuring the average grain size of sintered tungsten, molybdenum, and their alloy bars and rods. It is applied in the powder metallurgy industry to evaluate the microstructure uniformity and quality of refractory metal products after sintering. The method is critical for controlling material properties in high-temperature applications such as lighting filaments, electrical contacts, and vacuum furnace components.

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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.