The POSCO Quality
Stainless Steel
Stainless steel is a special steel featuring a splendid surface and good resistance to rust. As a high value-added product, stainless steel can be used for diverse areas without requiring any additional treatment.
Surface Treatment
* Compare the degree of reflection of objects with surface treatment.
| Finish Code | Processing Method and Application | Surface Condition |
|---|---|---|
| No.1 | This finish is created through hot rolling, heat treatment and pickling. It is ideal for materials to be cold-rolled, industrial tanks and chemical facilities. |  |
| No.2D | This finish is not reflective and is made through cold rolling, heat treatment and pickling. Its typical uses include petrochemical plants, auto parts, construction materials and pipes. |  |
| No.2B | This finish is made by applying a light cold rolling pass to No.2D. It is more reflective and less rough and provides better mechanical properties than No.2D. It is commonly used for almost all applications. |  |
| No.3 | This finish is made through polishing with 100-120 grit abrasives. Major applications are those requiring gorgeous reflective appearances, such as architectural materials, electronics and kitchen appliances. |  |
| No.4 | This finish is made through polishing with 150-180 grit abrasives. High grit numbers create finer polishing lines and more reflective finishes than No.3. This finish is widely used for bathtubs, architectural materials and food processing. |  |
| HL | Featuring a series of patterns, this finish is made through polishing with moderate grit abrasives. Its common uses include sashes, doors or other panels of buildings. |  |
| BA | This finish is made through cold rolling, bright annealing, heat treatment and then a light cold rolling pass. It is widely used for applications where a highly reflective surface is desired, including home appliances, small mirrors, kitchen appliances and architectural materials. |  |
| DULL | A dull surface is a matte finish produced by grinding with a fine rugged roll. Widely used for the exterior and interior of trains and buildings that require reduced light reflection. |  |