ผลิตภัณฑ์โลหะ
เอกสารมาตรฐาน
ญี่ปุ่น
JSA
JIS G 0551:2020/AMENDMENT 1:2022
Steels -- Micrographic determination of the apparent grain size (Amendment 1)
2022
1
offline
This Standard specifies a micrographic method of determining apparent ferritic or austenitic grain size in steels. It describes the methods of revealing grain boundaries and of estimating the mean grain size of specimens with unimodal size distribution.