DIN 17222 67SiCr5 1.7103 Cold Rolled Steel Strips for Springs
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.
67SiCr5 1.7103 Introduce
67SiCr5 1.7103 steel is an alloyed medium carbon engineering steel which has 0.62%-0.72% Carbon and 0.4%-0.6% Cr. 67SiCr5 1.7103 is a Spring Steel which is manufactured in Rod, Bar and coil.
67SiCr5 1.7103 Equivalent Grade
| Steel grade according to DIN 17 222 | Comparable grade according to EURONORM 132 |
| Code number | Material number |
| 67 SiCr5 | 1.7103 | 67 SiCr5 |
67SiCr5 1.7103 Dimensions and permissible deviations
Thickness: 0.1 to 4mm; Tolerances: +/- 0.008 to 0.11 mm
Width: 10 to 600mm; Tolerances: +/- 0.15 to 0.60mm
67SiCr5 1.7103 Chemical composition
| Steel number | grade number | C | Si | Mn | P | S | Cr |
| 67SiCr5 | 1.7103 | 0.62 to 0,72 | 1,20 to 1,40 | 0,40 to 0,60 | 0,035 | 0,035 | 0,40 to 0,60 |
67SiCr5 1.7103 Treatment condition on delivery
Cold rolled + soft annealed : G
Cold rolled + hardened + tempered : H + A
67SiCr5 1.7103 Mechanical properties in the cold rolled + soft annealed condition G
| Steel number | grade number | Tensile strength N/mm2 maximum | Elongation at break (L = 80 mm) % minimum | Vickers hardness maximum |
| 67SiCr5 | 1.7103 | 800 | 9 | 240 |
67SiCr5 1.7103 Tensile strength in the cold rolled + hardened + tempered condition (H + A)
| Steel number | grade number | Tensile strength N/mm2 |
| 67SiCr5 | 1.7103 | 1500 to 2200 |
67SiCr5 1.7103 Vickers hardness in the cold rolled + hardened + tempered condition (H + A)
| Steel number | grade number | Vickers hardness |
| 67SiCr5 | 1.7103 | 445 to 650 |
67SiCr5 1.7103 Surface condition
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.
67SiCr5 1.7103 Types of heat treatment
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 |
| 67SiCr5 | 1.7103 | 650 to 690 | 845 to 875 | 300 to 500 | 680 |
67SiCr5 1.7103 Acceptance testing and test certificates
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
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67SiCr5 1.7103 Cold Rolled Spring Steel Strip Images
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