Standard Microstructure(YAMAMOTO)

Standard Microstructure Group 1 Ferrous-Carbon Steel ・ Cast Iron 25Types
Group 2 Alloy Tool Steel ・ High Speed Steel 25Types
Group 3 Structual Alloy Steel ・ Steel for Special uses 25Types
Group 4 Standard Microstructure ・ Non-ferrous Alloy 25Types
Group 6 Standard Microstructure ・ Surface modification of Metls 25Types
Group 7 Standard Microstructure ・ Abnomal Structure 23Types