GB/T 1222 · AISI 1065 · EN 1.1230
65Mn is a manganese spring steel used for flat springs, saw blades and clutch plates. Buyers can specify the required thickness, width, delivery condition, edge and quantity for a feasibility review before quotation.
| Element | C | Si | Mn | P (max) | S (max) |
|---|---|---|---|---|---|
| % | 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | 0.035 | 0.035 |
| Condition | Hardness | Tensile Strength |
|---|---|---|
| Annealed (spheroidized) | ≤229 HB | ≤810 MPa |
| Hardened & Tempered | 42-50 HRC | 1400-1700 MPa |
Composition, hardness and mechanical-property tables are grade references, not guaranteed supply values. Verify the applicable standard edition, product form, condition and order-specific acceptance criteria.
| Parameter | Range |
|---|---|
| Thickness | State the required value and tolerance; confirm grade-specific feasibility |
| Width | State the required value, tolerance and edge condition |
| Delivery Condition | Annealed / Hardened & Tempered / Blue / Gold / Polished |
| Edge | Slit / Round / Square |
| Standard | GB/T 1222, ASTM A682, JIS G4801, EN 10132-4 |
| GB | AISI/ASTM | JIS | EN/DIN |
|---|---|---|---|
| 65Mn | 1065 | SUP6 | 1.1230 |
Leaf springs, lock washers, retaining clips. Excellent fatigue life and elastic recovery after hardening to 42-50 HRC.
Band saw and hack saw blades. Good combination of hardness and toughness for reciprocating cutting applications.
Friction plates and disc springs for automotive and industrial clutch assemblies. Consistent hardness and flatness control.
Compare 65Mn vs 51CrV4, use our spring steel selection guide, or review the steel strip RFQ checklist.
51CrV4 (alloy spring) · SK5 (high carbon) · S50C (medium carbon)