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C10-C15 Annealed Spring Steel

C10-C15

C10 (CK10) – C15 (CK15) Annealed Spring Steel

The C10 and C15 materials, produced in cold-rolled and annealed forms, are supplied in annealed form.

Technical Specifications of C10 (CK10) – C15 (CK15) Grade Annealed Spring Steel

C10 – C15 Grade Spring Steel is produced in cold-rolled form according to the EN 10132-2 standard. According to this standard, the products are defined as CK10 Steel and CK15 Steel.

Standard Comparison

EN 10132 UNI DIN AFNOR BS SAE/AISI
C10E C10 CK10 XC10 C10S C10
C15E C15 CK15 XC15 C15S C15

Chemical Compositions %

C Mn Si P max. S max. Cr max. Ni max. Mo max. V
0,07-0,13 0,30-0,60 0.40 0,035 0,035 0,40 -- -- --
0,12-0,18 0,30-0,60 0,40 0,035 0,035 0,40 -- -- --

Mechanical Properties

Rm max N/mm² HV max. A% (Lo80 min)
430 135 26
450 140 25

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