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for the production of small springs
Specification，Coiled：Φ5.5～16mm Rolled：Φ16～160mm Forging：Φ160～450mm
Yield Strength，σs (MPa)：520~690
Elongation，δ10 (%)：14~22.5
Hardness，Hot-rolled，≤302HB；Cold Drawn + heat treatment，≤321HB
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