9260
Data verified9260 is a silicon-manganese spring steel with about 2% silicon, giving an exceptionally high yield-to-tensile ratio and resistance to permanent set (sag). It is a mainstream coil spring steel for vehicle suspensions.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.56–0.64 |
| Si | 1.80–2.20 |
| Mn | 0.75–1.00 |
| P | ≤0.035 |
| S | ≤0.040 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Hardness (spring temper) | 40–50 HRC typical |
| Tensile strength | 1300–1600 MPa (Q&T spring temper, typ.) |
| Density | 7.85 g/cm³ |
Heat treatment
Anneal 840–870 °C (slow cool to avoid decarb); quench 860–890 °C oil; temper 400–500 °C.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.5028 (65Si7 family, near) |
| aisi | 9260 |
| jis | SUP6 (near) |
| gb | 60Si2Mn (near) |
Compare side by side: 9260 vs 60Si2Mn · 9260 vs 5160
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Coil springs, torsion bars, stabilizer bars, leaf springs, heavy clips.
Processing: Prone to surface decarburization — protective atmosphere or salt bath heating preferred; shot peening standard for fatigue duty.
FAQ
- Why silicon in spring steel?
- Silicon raises the elastic limit and tempering resistance without much cost, so Si-Mn springs keep their shape under repeated high deflection better than plain carbon springs.
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Ask for a quotationVisit NasteelSource: SAE J404 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.