Classification | Scope | ||||
Grade | 301, 304, 304L, 304LL, 304J1, 309Si, 310S, 316L, 316Ti, 321, | ||||
420J2, 430, 409L | |||||
Surface Finish | 2D | 2B | BA, DF. BF,SF,HL | 1/4H,1/2H,3/4H,H,EH | |
Size | Thickness | 0.4 ~ 2.4 | 0.4 ~ 1.5 | 0.08 ~ 1.2 | 0.08 ~ 2.0 |
Width | 5.0 ~ 500 | 5.0 ~ 500 | 5.0 ~ 500 | 5.0 ~ 500 | |
| Classification | Explanation |
| Mill Edge | Edges as produced, not sheared. No width tolerance applied. |
| Slit Edge | Edges sheared in the width demanded by a customer. |
| Deburred Edge | Edges sheared and trimmed roughly. |
| Round Edge | Edges sheared and trimmed with their endings rounded. |
| KS | JIS | ASTM | EN | Typical Ra | Work & Surface Conditions | Usage |
| No.2D | No.2D | No.2D | 2D | 0.15 ~ 0.35 ㎛ | Annealed and Pickled dull surface after cold rolling | Common type of cold rolled products, Construction, Drawing |
| No.2B | No.2B | No.2B | 2B | 0.06 ~ 0.2 ㎛ | Skin pass rolled on 2D surface | Common type of cold rolling products |
| No.4 | No.4 | No.4 | 2J | 0.2 ~ 0.7 ㎛ | Surface grinded by 150~180 Mesh | Automotive, Medical |
| BA | BA | Bright Annealed | 2R | 0.02 ~ 0.1 ㎛ | dazzling heat treatment performed after cold rolling | Automotive, Home appliances, Kitchen utensils, Decorations, Construction |
| HL | HL | 2M | 0.25 ~ 0.45 ㎛ | Endless line scratched on the surface by abrasive | Construction Exterior/Interior like door, panel | |
| TR | 2H | 0.05 ~ 0.18 ㎛ | Cold rolled materials classified with processing and hardening | High hardness products, Spring, Railroad cars |
