Suitable for applications that require high conductivity, formability, and heat resistance, including automotive and electrical products.
| Standard | KS | ASTM | JIS | EN |
|---|---|---|---|---|
| Code | D 3512 | - | G 3141 | - |
| Symbol | Standard Thickness (μm) | Standard Coating Weight (g/m²) | Target Range (g/m²) | Minimum Coating Weight (g/m²) |
|---|---|---|---|---|
| #5 | 0.5 | 5 | 4.0 ~ 6.0 | 3.0 |
| #10 | 1 | 10 | 9.0 ~ 11.0 | 8.0 |
| #20 | 2 | 20 | 18.0 ~ 22.0 | 17.0 |
| #30 | 3 | 30 | 28.0 ~ 32.0 | 26.0 |
| #50 | 5 | 50 | 46.0 ~ 54.0 | 43.0 |
| #75 | 7.5 | 70 | 70.0 ~ 80.0 | 65.0 |
| Grade | Type | Applications | Note |
|---|---|---|---|
| SPED | CR1 | For commercial, single and double wall tube | Cold Rolled Steel Sheets and Strips |
| SPED | CR2 | For drawing | |
| SPCE | CR3 | For deep drawing |
| Temper Grade | Symbol | HRB | HV | HR30t | Note |
|---|---|---|---|---|---|
| S (skin passed) | S | ≤ 65 | ≤ 115 | ≤ 60 | Cold Rolled Steel Sheets and Strips |
| A (as annealed) | A | ≤ 57 | ≤ 105 | ≤ 55 | |
| 1/8 Hard | 1/8H | 50 ~ 71 | 95 ~ 130 | 50 ~ 63 | |
| 1/4 Hard | 1/4H | 65 ~ 80 | 115 ~ 150 | 60 ~ 70 | |
| 1/2 Hard | 1/2H | 74 ~ 89 | 135 ~ 180 | 66 ~ 75 | |
| Full Hard | H | ≥ 85 | ≥ 170 | ≥ 72 |
| Name | Symbol | Characteristics | Roughness(Ra/㎛) | |
|---|---|---|---|---|
| KS/JIS | TCC | |||
| Bright Finish | B | BF | A premium surface finish achieved through fine polishing, resulting in a smooth surface. followed by coating. | 0.20~0.40 |
| Stone Finish | R | D7 | A dull surface finish characterized by roughness, followed by coating. | 0.70~1.30 |
| Classification | TS(kg/mm2) | YP(kg/mm2) | El(%) | HR30t |
|---|---|---|---|---|
| SPCC | ≥ 28 | ≤ 27 | ≤ 32 | ≤ 60 |
| SPCD | ≥ 28 | ≤ 27 | ≤ 34 | ≤ 55 |
| SPCE | ≥ 28 | ≤ 27 | ≤ 36 | ≤ 40 |
