JIS G4801 SUP9 Steel — Specifications & Listings
JIS G4801
Chrome manganese spring steel, JIS standard
Grade Details
| Grade | JIS G4801 SUP9 |
| Standard | JIS G4801 |
| Description | Chrome manganese spring steel, JIS standard |
| Applications | Automotive leaf springs, suspension springs |
Equivalent / Similar Grades
Chemical Composition (%)
| C |
Mn |
Cr |
Si |
| 0.52–0.60 |
0.65–0.95 |
0.65–0.95 |
0.15–0.35 |
Mechanical Properties
| Tensile Strength |
1180 MPa min (oil hardened) |
| Yield Strength |
≥1030 MPa |
| Elongation |
≥7% |
| Hardness |
363–429 HB |
Typical Available Sizes
| Round Bar |
10mm–75mm dia |
| Flat Bar |
15×5mm–100×20mm |
| Spring Flat |
3×25mm–20×125mm |
Sizes are indicative. Contact seller for exact availability.
Active JIS G4801 SUP9 Listings on M-EX