SUP9A Steel — Specifications & Listings
JIS G4801 — Japanese chrome manganese spring steel, higher Mn than SUP9
Grade Details
| Grade | SUP9A |
| Standard | JIS G4801 |
| Description | Japanese chrome manganese spring steel, higher Mn than SUP9 |
| Applications | Heavy duty leaf springs, torsion bars |
Equivalent / Similar Grades
Chemical Composition (%)
| C |
Mn |
Cr |
Si |
| 0.56–0.64 |
0.70–1.00 |
0.70–1.00 |
0.15–0.35 |
Mechanical Properties
| Tensile Strength |
≥1180 MPa |
| Yield Strength |
≥1030 MPa |
| Elongation |
≥7% |
Typical Available Sizes
| Round Bar |
10mm–75mm dia |
| Spring Flat |
5×30mm–20×150mm |
Sizes are indicative. Contact seller for exact availability.
Active SUP9A Listings on M-EX