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Product Details:
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| Thickness: | 0.1 To 6 Mm | Width: | 10 To 400 Mm |
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| Delivery Condition 1: | Cold Rolled + Hardened + Tempered | Delivery Condition 2: | Cold Rolled + Soft Annealed : G |
| Steel Number: | 1.1221 | Steel Grade: | Ck60 |
| Surface Condition: | Bright, Grey-blue, Polished, Polished And Colour-tempered | Form: | Steel Coils Strips |
| Standard: | DIN 17222 | ||
| High Light: | 1.1221 Cold Rolled Steel Strips,Ck60 Cold Rolled Spring Steel Strips,Ck60 1.1221 Cold Rolled Steel Strips |
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Cold rolled steel strip for springs is distinguished by high dimensional accuracy and good surface quality and, in the cold rolled + hardened + tempered condition (H + A) offers the possibility of achieving high values of hardness, tensile strength and elastic limit.
Ck60 1.1221 Carbon Steel is a high-carbon steel of low hardenability; it may be used in the as-rolled, annealed, normalized or liquid-quenched-and-tempered condition, depending on the desired properties. It is normally hardened by austenitizing and quenching in oil; however, it may be quenched in water if precautions are taken to prevent cracking. Its many uses include springs.
Thickness: 0.1 to 4mm; Tolerances: +/- 0.008 to 0.11 mm
Width: 10 to 600mm; Tolerances: +/- 0.15 to 0.60mm
| Steel grade according to DIN 17 222 | Comparable grade according to EURONORM 132 | |
| Code number | Material number | |
| Ck60 | 1.1221 | 1 CS60 |
| Steel number | grade number | C | Si | Mn | P | S |
| Ck60 | 1.1221 | 0.57 to 0,65 | 0,15 to 0,35 | 0,60 to 0,90 | 0,045 | 0,045 |
Cold rolled + soft annealed : G
Cold rolled + hardened + tempered : H + A
| Steel number | grade number | Tensile strength N/mm2 maximum | Elongation at break (L = 80 mm) % minimum | Vickers hardness maximum |
| Ck60 | 1.1221 | 620 | 13 | 185 |
| Steel number | grade number | Tensile strength N/mm2 |
| Ck60 | 1.1221 | 1180 to 1680 |
| Steel number | grade number | Vickers hardness |
| Ck60 | 1.1221 | 350 to 500 |
Strip to be supplied in the
1 cold rolled + soft annealed G or
2 cold rolled + soft annealed + cold rolled (G + K) condition
must have a bright, metallically clean surface.
Cold rolled + hardened + tempered (H + A) strip is supplied, as agreed at the time of ordering, with
1 grey-blue (GR),
2 bright (8K),
3 polished (P) or
4 polished and colour-tempered (P & AF) surface.
Approximate values for heat treatment and minimum hardness values in the hardened condition of cold rolled steel strips for springs
| Steel number | grade number | Annealed °C | Hardened in oil at °C | Tempered to °C | Vickers hardness in hardened condition minimum |
| Ck60 | 1.1221 | 650 to 690 | 825 to 855 | 300 to 500 | 670 |
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
Contact Person: Ms. Florence Tang
Fax: 86-731-89853933
