Our hardened and tempered steel strips are used in manufacturing high-performance shutter springs for roller shutters. With uniform hardness, tight tolerances, and smooth edges, our spring steel ensures consistent torque, smooth shutter operation, and extended service life. Trusted globally, Sodani Steel & Strips Pvt. Ltd. delivers premium shutter spring steel for reliable roller shutter performance.
| Surface Finish | Furnace Grey, Bright, Very Bright & Blue |
| Edges | Sheared Edges & Both Side Edge Round (2ER) |
| Shutter spring strip Hardness | 45 - 48 HRC |
| Delivery form | Coils |
| Coil Weight | 50 To 100 Kg |
| Packaging | Coils Lightly Oiled & Wrapped In Protective/ Seaworthy Packing. Then placed in wooden boxes or on pallets. (Can be customised for individual demands.) |
Carbon Steel Strips - for standard applications
| Grades | Carbon % | Silicon % | Manganese % | Sulphur % (Max) | Phosphorous % (Max) | Chromium % | Nickel % |
|---|---|---|---|---|---|---|---|
| C-65 | 0.60-0.70 | 0.15-0.35 | 0.60-0.90 | 0.05 | 0.04 | - | - |
| C-75 | 0.70-0.80 | 0.15-0.35 | 0.60-0.90 | 0.05 | 0.04 | - | - |
| C-80 | 0.75-0.85 | 0.15-0.30 | 0.60-0.90 | 0.05 | 0.04 | - | - |
| USA (SAE/AISI) | Germany (DIN) | Great Britain (BS) | France (NFA) | Euronorm (EN) | Italy (UNI) | Japan (JIS) |
|---|---|---|---|---|---|---|
| 1065 | CK 67 | EN 42F | XC 68 | C 675 | - | - |
| 1075 | C 75 | EN 42J | XC 75 | C 75S | C 75 | - |
| 1080 | C 80 | CS 80 | - | - | - | - |
