20 wall charts in the Golden Phase Rating Standard series

1. Low, medium carbon steel spherical rating  （JB/T5074--2007） 

3. Fe-C and Fe-Fe3C alloys phase 

4. Fe-C and Fe-Fe3C alloy phase and heat treatment temperature 

Steel induction gold phase rating scale (1-10) (JB/T9204-2008)

Chart of the Mallow grade of the medium carbon steel and the medium carbon alloy structure (1-8 grades) (JB/T9211-2008)

Austropic and Maraging grade charts for carbon-coated gear residues (1-8) (QC/T262-1999)

8. Carbon carbide grade for permeation (scales 1-8)

9. Nutric oxide grade (Class 1-5) for steel parts (GB/T11354-2005)

10. Steel Splash Identification Map

11. Table for conversion of hardness and strength of carbon steel and alloy steel

12. Control of metal material hardness table