24 July 2021 Spring Steel Wire
60SiCr7 Spring Steel Technical Details
60SiCr7 (1.7108 ) is a widely used silico-manganese spring steel with slightly higher strength, elasticity and hardenability than 55Si2Mn . It is suitable for the production of flat springs with large loads in the railway vehicles, automobile and tractor industries, or coil springs with a wire diameter of less than 30mm, and also suitable for the production of heat-resistant springs in non-corrosive media with a working temperature of 250 ℃ or less and withstand alternating loads. And large important coiled springs that work under high stress.
Chemical Composition:
| C(％) | Si(％) | Mn(％) | P(％) | S(％) | Cr(％) | Ni(％) | Cu(%) |
|---|---|---|---|---|---|---|---|
| 0.57-0.65 | 1.50-2.00 | 0.70-1.00 | ≤0.025 | ≤0.025 | ≤0.45 | ≤0.35 | ≤0.25 |
Mechanical Properties：
| Tensile Strength σb (MPa): | Yield Strength σ0.2 (MPa): | Elongation δ5 (%): | Reduction of area ψ (%): | Hardness: |
|---|---|---|---|---|
| ≥ 1274 (130) | ≥1176 (120) | ≥ 5 | ≥ 25 | Hot rolled: ≤321HB; Cold Drawn + Heat Treatment: ≤350HB |
Heat treatment specification:
quenching 870℃±20℃, oil cooling; tempering 480℃±50℃ (for special needs, ±30℃).
Metallographic structure:
tempered troostite.
60SiCr7 Technical Data Sheet PDF