Standard Piece Sets of JIS Steel Materials（YAMAMOTO）
| Standard Piece Sets of JIS Steel Materials | Group for Educational Applications | Group K |
| Group for Specialized Applications | Carbon Steel Group F | |
| Tool Steel Group G | ||
| Structural & Special Steel Group H |
| Standard Piece Sets of JIS Steel Materials | Group for Educational Applications | Group K |
| Group for Specialized Applications | Carbon Steel Group F | |
| Tool Steel Group G | ||
| Structural & Special Steel Group H |