Cold Rolled Steel Sheet "TOP" was developed by Toyo Kohan to have the ultimate thinness of 0.025 mm, a beautiful mirror-like finish, and the ability to withstand deep drawing. It has received high praise within the industry.
Enables a wide range of steel selection, and mechanical characteristics control according to various needs by fragmented tempering.
Obtains superb size and thickness accuracy & shape through cutting edge equipment and operation technologies like advanced press rolled automated sheet thickness control.
Obtains a beautiful appearance according to various needs from carefully polished rolls and their types. Mirror finish is also available.
Enables manufacturing up to 25 microns in the foil category.
| Standards Codes (Comparable JIS Standards G 3141) | Features |
| SPCC | (General purpose) Perfect for bending process and simple tie process, and product types with a range of use. |
| SPCD | (For ties) Sheet sheets with superb tie and steel sheets for tie with little disparity in characteristics. |
| SPCE | (For deep ties) Obtains a beautiful surface skin even after deep tie processing through steel sheets possessing superb deep tie with crystal grain adjustments. |
| Standards Codes (Comparable JIS Standards G 3311) | Features |
| S35CM S45CM S50CM |
To obtain high strength, use medium carbon steels in materials, and manufactured under strict controls similar to polished hoop steel. |
| Designation | Features |
| SF | An ultra thin steel sheet manufactured using a rolling method used for applications very close to foil. |
From standard industry products to leading-edge products, this product is used in the lives of people around the world.
Battery cans
Deep drawing forming available.
Weather strip for door
High strength to reduce weight.
Spark plug parts
Product withstands overprocessing.
Wheel cover
Beautiful appearance like a mirror.
Bearing retainer
Note: The above manufacturable range is applicable to standard tempered steel sheet. Contact us for details.
| Comparable JIS Standards |
Tampering Classification | Toyo Kohan Types | HR30T | HRB | HV | |
|---|---|---|---|---|---|---|
| Internal Tempering Code |
Features | |||||
| SPCC | A | AN | As annealed | Less than 53.0 | Less than 57.0 | Less than 105 |
| SPCE | AE | |||||
| SPCC | S | SA SO SN SB |
Standard tempering (Surface roughness prevention measures) | Less than 58.0 | Less than 65.0 | Less than 115 |
| SPCD | SD | Deep Tie Uses | ||||
| SPCE | SDE | Deep Tie Uses | ||||
| SPCC | 8 | 8 SUS |
1/8 hardness ditto (Manufactured using continuous annealing method) |
49.0 to 63.0 | 50.0 to 71.0 | 95 to 130 |
| SPCC | 4 | 4M SU4 SU5 |
1/4 hardness ditto (Manufactured using continuous annealing method) ditto (ditto) |
58.0 to 68.0 | 65.0 to 80.0 | 115 to 150 |
| 2 | 2 2C |
1/2 hardness ditto (Manufactured using continuous annealing method) |
64.0 to 74.0 | 74.0 to 89.0 | 135 to 185 | |
| 1 | 1 | Hardness | More than 71.0 | More than 85.0 | More than 170 | |
| Type | C | Mn | P | S | Fe |
|---|---|---|---|---|---|
| SPCC | Less than 0.15 | Less than 0.60 | Less than 0.100 | Less than 0.035 | Bal |
| SPCD | Less than 0.10 | Less than 0.50 | Less than 0.040 | Less than 0.035 | Bal |
| SPCE | Less than 0.08 | Less than 0.45 | Less than 0.030 | Less than 0.030 | Bal |
| Surface finish | Code | Description | Toyo Kohan Standards | ||
|---|---|---|---|---|---|
| Dull Finish | D | Matte finish using roll that mechanically roughens surface. | Type 5 | ||
| Bright Finish | B | Smooth finish using roll that makes a smooth finish. | Type 6 | ||
| Comparable JIS Standards |
Tampering Classi- fication |
Internal Tempering Code |
Tensile strength (N/mm²) |
Elongation(%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thickness Classification(mm) | |||||||||||||
| More than 0.12 | More than 0.12 Less than 0.18 |
More than 0.18 Less than 0.25 |
More than 0.25 Less than 0.30 |
More than 0.30 Less than 0.40 |
More than 0.40 Less than 0.60 |
More than 0.60 Less than 0.80 |
More than 0.80 Less than 1.00 |
More than 1.00 Less than 1.20 |
More than 1.20 Less than 1.60 |
More than 1.60 Less than 2.30 |
|||
| SPCC | A | AN | More than 270 | More than 28 | More than 28 | More than 28 | More than 31 | More than 34 | More than 36 | More than 36 | More than 37 | More than 37 | More than 38 |
| SPCE | AE | More than 270 | More than 30 | More than 32 | More than 32 | More than 35 | More than 38 | More than 40 | More than 40 | More than 41 | More than 41 | More than 42 | |
| SPCC | S | SA | More than 270 | More than 22 | More than 28 | More than 28 | More than 31 | More than 34 | More than 36 | More than 36 | More than 37 | More than 37 | More than 38 |
| SO SN SB |
More than 270 | More than 22 | More than 28 | More than 28 | More than 31 | More than 34 | More than 36 | More than 36 | More than 37 | More than 37 | More than 38 | ||
| SPCD | SD | More than 270 | More than 22 | More than 28 | More than 30 | More than 33 | More than 36 | More than 38 | More than 38 | More than 39 | More than 39 | More than 40 | |
| SPCE | SDE | More than 270 | More than 25 | More than 32 | More than 32 | More than 35 | More than 38 | More than 40 | More than 40 | More than 41 | More than 41 | More than 42 | |
| SPCC | 8 | 8 SUS |
290 to 410 | - | - | - | - | More than 25 | More than 25 | - | - | - | - |
| SPCC | 4 | 4M SU4 SU5 |
370 to 490 | - | - | - | - | More than 10 | More than 10 | - | - | - | - |
| 2 | 2 2C |
440 to 590 | - | - | - | - | - | - | - | - | - | - | |
| 1 | 1 | More than 550 | - | - | - | - | - | - | - | - | - | - | |