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C67S spring steel strip
2018-01-20 10:31:21

 • characteristics and scope of application:

C67S spring steel and manganese increase hardenability. The steel oil of 12mm can be hardened. The decarburization tendency of surface is smaller than that of silicon steel. The comprehensive mechanical properties after heat treatment is better than that of carbon steel, but it has overheating sensitivity and temper brittleness. It can be used as small size, flat, round spring, cushion spring and spring spring, and also can make spring ring, valve spring, clutch reed, brake spring and cold drawn steel wire cold coil spring.
Strength, hardness, elasticity and hardenability are higher than those of No. 65 steel, with overheating sensitivity and temper brittleness tendency, and water quenching has a tendency to crack. The machinability of the annealed state is still available, the cold deformation is low, and the weldability is poor.
A plate spring with a medium load, a spiral spring and a spring washer with a diameter of 7-20mm, and a spring ring. High wear resistance parts, such as grinder spindle, spring clip head, precision machine tool wire rod, cutter, ring on screw roller bearing, rail rail, etc.
mechanical property
Mechanical properties:
Tensile strength sigma B (MPa):825~925
Yield strength sigma S (MPa):520~690
Elongation of delta 10 (%):14~22.5
Section shrinkage of PSI (%): not more than 10
The hardness is less than or equal to 302HB;: hot rolling, cold drawing + heat treatment, less than 321HB
Heat treatment specification
Heat treatment specification and metallographic organization:
Heat treatment specification: quenching 830 C + 20 C, oil cold, tempering 540 C + 50 C (special need, + 30 C).
Metallographic organization: the body of the flexor.
Delivery state: hot rolled steel is delivered in a state of heat treatment or non heat treatment, and cold rolled steel is delivered in a heat treatment state.
Supply specifications:
Round: the diameter of 5.5 ~ 16mm
Rolling material: 16 ~ 160mm
Forging material: 160 ~ 450mm
C67S density
The C67S density of =7.85 g / cm3, the steel can be rolled into sheet, strip and wire spring production. C67S can also be made into tools such as chisels and needle strokes, such as fitter. The C67S steel making section size is about 8 ~ 15mm in the small spring such as small size, flat round spring, spring, spring mattress.

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