China Gnee factory 201 304 316L 2B BA No.4 hl 8k surface finish 4x8 size cold rolled stainless steel sheet for elevator door.
| SurfaceTerminar | Definition | Application |
| 2B | Finished by heat treatment, collection or cold rolling equipvalent, after passing the skin to obtain a suitable gloss surface. | With a shiny and smooth surface, easy to grind to get a shinier surface, suitable for medical instruments, milk containers, crockery, etc. |
| BA | Glossy heat treatment after cold rolling. | Structural members Etc. Kitchen utensils, cutlery, electrical applications, medical instruments, building decorations, etc. |
| NO.3/NO.4 | Polished with abrasives No.150-240. | Milky food processing equipment, medical instruments, construction decorations. |
| HL | Finished by polishing with abrasives of grain suitable for obtaining continuous stripes. | Building decorations, such as elevators, escalators, doors, etc. |
| 6K/8K | A mirror-like reflective surface is removed, which is obtained by polishing with finer abrasives and polishing extensively with all sand lines. | Construction entrances, screen column casting, elevator wall doors, counters, sculpture, etc. |
| Chemical composition and mechanical properties of stainless steel coils | |||||||||
| Degree | Chemical composition (%) | Mechanieal Performece | |||||||
| C | Yes | Mn | P | S | Nor | Cr | Mo | Hardness | |
| 201 | ≤ 0.15 | ≤ 1.00 | 5,5/7,5 | ≤ 0.060 | ≤ 0.030 | 3,5/5,5 | 16,0/18,0 | - | HB≤ 241 HRB≤ 100 HV≤ 240 |
| 304 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.03 | 8,0/11,0 | 18,00/20,00 | - | HB≤ 187 HRB≤ 90 HV≤ 200 |
| 316 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.03 | 10,00/14,00 | 16,0/18,0 | 2,00/3,00 | HB≤ 187 HRB≤ 90 HV≤ 200 |
| 316L | ≤ 0.03 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.03 | 10,00/14,00 | 16,0/18,0 | 2,00/3,00 | HB≤ 187 HRB≤ 90 HV≤ 200 |
| 410 | ≤ 0.15 | ≤ 1.00 | ≤ 1.25 | ≤ 0.060 | ≤ 0.030 | ≤ 0.060 | 11,5/13,5 | - | HB≤ 183 HRB≤ 88 HV≤ 200 |
| 430 | ≤ 0.12 | ≤ 1.00 | ≤ 1.25 | ≤ 0.040 | ≤ 0.03 | - | 16,00/18,00 | - | HB≤ 183 HRB≤ 88 HV≤ 200 |
The finish of the mirror is produced by the progressive use of finer abrasives and finishing with extremely fine polished compounds. The mirror finish is also called 8K, No.8 and polished, which is the most reflective mirror finish with high quality to similar to glass mirror. The final surface is free of stains with a high degree of image clarity and is the true finish of the mirror.
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