|
Product Details:
|
Thickness: | 0.1 To 6 Mm | Width: | 10 To 400 Mm |
---|---|---|---|
Delivery Condition 1: | Cold Rolled + Hardened + Tempered | Delivery Condition 2: | Cold Rolled + Soft Annealed : G |
Steel Number: | 1.1203 | Steel Grade: | Ck55 |
Surface Condition: | Bright, Grey-blue, Polished, Polished And Colour-tempered | Form: | Steel Coils Strips |
Standard: | DIN 17222 | ||
Highlight: | 1.1203 Cold Rolled Steel Strips,DIN 17222 Tempered Spring Steel Strips,Ck55 Cold Rolled Spring Steel Strip |
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.
Ck55 steel has a higher (0.55%) carbon content for greater strength than the lower carbon alloys. It is hardenable by heat treatment, quench and tempering.
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 | |
Ck55 | 1.1203 | 1 CS55 |
Steel number | grade number | C | Si | Mn | P | S |
Ck55 | 1.1203 | 0.52 to 0,60 | 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 |
Ck55 | 1.1203 | 610 | 13 | 180 |
Steel number | grade number | Tensile strength N/mm2 |
Ck55 | 1.1203 | 1150 to 1650 |
Steel number | grade number | Vickers hardness |
Ck55 | 1.1203 | 340 to 490 |
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 |
Ck55 | 1.1203 | 650 to 690 | 830 to 860 | 300 to 500 | 650 |
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