| CL' symbol | Standard | Steel Grade | Application |
| B8007 | JIS G 4801 | SUP 7 | Coiled Spring、Shock Absorber、Torsion Bar、Stabilizer for Automobile。 |
| B8009 | SUP 9 | ||
| B8010 | SUP 10 | ||
| B8012 | SUP 12 (9254) | ||
| B860SI | CSC. | 60SiCrV |
| CL' symbol | Standard | Steel Grade | Application |
| B8007 | JIS G 4801 | SUP 7 | Coiled Spring、Shock Absorber、Torsion Bar、Stabilizer for Automobile。 |
| B8009 | SUP 9 | ||
| B8010 | SUP 10 | ||
| B8012 | SUP 12 (9254) | ||
| B860SI | CSC. | 60SiCrV |