YAMAMOTO STANDARD PIECE OF MICROSTRUCTURES - GROUP 4
Yamamoto Scientific Tool Laboratory Co., Ltd. was established in 1939. It was the first dedicated manufacturer of standard test blocks in Japan, and has maintained its reputation as the best and foremost company in this field. Yamamoto’s standard microstructure of selected steels and nonferrous alloys were originated in Tokyo Metropolitan Industrial Technology Center under precise heat treatment condition. The set of standard microstructure are provided with a detailed manual with photographs and metallographic explanation for each microstructure. There are six different sets of Yamamoto’s standard microstructure: Group 1: Ferrous-Carbon Steel, Cast Iron, Cast Steel Group 2: Alloy Tool Steel, High…
