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The C10 and C15 materials, produced in cold-rolled and annealed forms, are supplied in annealed form.
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.
| EN 10132 | UNI | DIN | AFNOR | BS | SAE/AISI |
|---|---|---|---|---|---|
| C10E | C10 | CK10 | XC10 | C10S | C10 |
| C15E | C15 | CK15 | XC15 | C15S | C15 |
| 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 | -- | -- | -- |
| Rm max N/mm² | HV max. | A% (Lo80 min) |
|---|---|---|
| 430 | 135 | 26 |
| 450 | 140 | 25 |
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