Specifications
Mild Cold Rolled Steel
| Classification | Specifications |
Temper Classifications |
Tensile Strength (Mpa) | ||
|---|---|---|---|---|---|
| Class 1 | Commercial Quality | CSP1 | Annealing Standard | A S | (275 ≤) |
| 1/8 Full Hard | 8H | - | |||
| 1/4 Full Hard | 4H | - | |||
| Full Hard | H | - | |||
| Light Drawing Quality | CSP1D | Annealing Standard | A S | (275 ≤) | |
| Class 2 | Drawing Quality | CSP2 | Annealing Standard | A S | 275≤ |
| Class 3 | Deep Drawing Quality | CSP3 | Annealing Standard | A S | 275 ≤ |
| Non-Aging Deep Drawing Quality | CSP3N | Annealing Standard | A S | 275 ≤ | |
| Non-Aging Super Deep Drawing Quality | CSP3E | Standard | s | 275 ≤ | |
| CSP3X* | Standard | s | 265 ≤ | ||
| CSP3Z* | Standard | s | 255≤ | ||
| Elongation, min. (%) | Hardness | |||||
|---|---|---|---|---|---|---|
| 0.25~0.4 | 0.4~0.60 | 0.6~1.0 | 1.0~1.6 | 1.6~2.0 | HRB | HV |
| (32) | (34) | (36) | (37) | (38) | - | - |
| 50 ~ 71 | 95 ~ 130 | |||||
| 65 ~ 80 | 115 ~ 150 | |||||
| 85 ≤ | 170 ≤ | |||||
| 33 | 35 | 37 | 38 | 39 | - | - |
| 34 | 36 | 38 | 39 | 40 | - | - |
| 36 | 38 | 40 | 41 | 42 | - | - |
| 36 | 38 | 40 | 41 | 42 | - | - |
| 44 | 45 | 46 | 48 | - | - | - |
| 46 | 47 | 48 | 50 | - | - | - |
| - | 52 | 52 | 52 | - | - | - |
- - Annealed and normal tempered CSP1 class steel is to be CSP1T in case that each or both of the values of the tensile test and Erichsen test are guranteed according to customers requirements.
- - In case that surface quality is strictly require, "E" will be attached at the end of the specification
- - [ ] is only for reference
- - In case of CSP3N and CSP3E, non-aging property is guaranteed for six months after shipment.
- - For steel less than 0.6mm in thickness, the tensile test shall generally be omitted.
- - The specitification with "*" require prior negotiation before ordering.
- - The tensile test: JIS No.5 test pieces Rolling Direction. Bending test: No.3 test pieces Rolling Direction