65Mn spring steel srip/coil flat spring steel carbon spring steel price

Name

 Spring steel coil

Heat treatment

Quench 830 °C ± 20 °C, oil cooling; tempering 540 °C ± 50 °C

Mechanical properties

Tensile strength σb (MPa): ≥ 980 (100),Yield strength σs(MPa): ≥784(80),

Elongation δ10(10%):≥8,Section shrinkage ψ(%):≥30,Hardness: Hot Rolling,

≤302HB;Cold Pull+Heat Treatment,≤321HB.

Packing

 Export standard packing or according to customers’ requirement

Certificate  

ISO9001:2008,SGS

 Shipment  

Within10-15 workdays,25-30days when the quantity beyond 1000tons