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Spring Steel is typically used because of its’ high yield strengths, resistance to deformation and its ability to return to its original shape.
| GB | ASTM | JIS | EN | DIN |
|---|---|---|---|---|
| 55 | 1055 | / | CK55 | 1.1204 |
| 60 | 1060 | / | CK60 | 1.1211 |
| 70 | 1070 | / | CK67 | 1.1231 |
| 75 | 1075 | / | CK75 | 1.1248 |
| 85 | 1086 | SUP3 | CK85 | 1.1269 |
| T10A | 1095 | SK4 | CK101 | 1.1274 |
| 65Mn | 1066 | / | / | / |
| 60Si2Mn | 9260 | SUP6,SUP7 | 61SiCr7 | 60SiCr7 |
| 50CrVA | 6150 | SUP10A | 51CrV4 | 1.8159 |
DIN 17222 Cold Rolled Steel Strips for Springs Technical Conditions of Delivery
BS EN 10132 Cold rolled narrow steel strip for heat treatment. Technical delivery conditions
| Steel Grade | Tensile Strength Rm (Mpa) | Yield Strength Rp0.2 (Mpa) | Elongation A5 (%) | Area Reduction Ratio C (%) |
|---|---|---|---|---|
| 65 | 980 min | 785 min | 9 min | 35 min |
| 70 | 1030 min | 835 min | 8 min | 30 min |
| 85 | 1130 min | 980 min | 6 min | 30 min |
| 65Mn | 980 min | 785 min | 8 min | 30 min |
| 60Si2Mn | 1275 min | 1180 min | 5 min | 25 min |
| 50CrVA | 1275 min | 1130 min | 10 min | 40 min |
Cold Rolled only
Cold Rolled+Soft Annealed (G)
Cold Rolled+Soft Annealed+Cold Rolled (G+K)
Cold Rolled+Hardened+Tempered (H+A)
Grey Blue (GR)
Bright (BK)
Polished (P)
Polished and Colour Tempered (P+AF)
| Steel Grade | Quenching Temperature (°C) ( | Media | Tempering Temperature (°C) |
|---|---|---|---|
| 65 | 840 | oil | 500 |
| 70 | 830 | oil | 480 |
| 85 | 820 | oil | 480 |
| 65Mn | 830 | oil | 540 |
| 60Si2Mn | 870 | oil | 480 |
| 50CrVA | 850 | oil | 500 |
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
>>>Standard
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 | >>>Steel Grades
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