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304L/316L
Shanqi
Product Description
300 series stainless steel is an alloy material containing iron, carbon, nickel and chromium. It is non-magnetic and has excellent forgability and corrosion resistance. According to AISI standards, stainless steel is represented by three Arabic numerals. The first digit indicates the category, and the second or third digit indicates the ordinal number. Like our common first number 2, 3, 4, represents the different stainless steel categories:
| Surface | Feature | Outline of manufacturing method | Use |
| NO.1 | Silver white Dull | Hot rolled to specified thickness | Applications that do not require a glossy finish |
| NO.2D | Silver white | Heat treatment and pickling after cold rolling | General material, deep drawing material |
| NO.2B | Gloss is stronger than NO.2D | After NO.2D treatment, the final light cold rolling is carried out by polishing rolls | General timber |
| BA | Bright as a mirror | No standard, but usually a bright annealed finish with a highly reflective surface. | Building materials, kitchen utensils |
| NO.3 | Coarse grinding | Grinding with 100~200# (unit) abrasive belt | Building materials, kitchen utensils |
| NO.4 | Intermediate grinding | Polished surface obtained by grinding with 150~180# abrasive belt | Building materials, kitchen utensils |
| NO.240 | Fine grinding | Grinding with 240# abrasive belt | Kitchenware |
| NO.320 | Very fine grinding | Grinding with 320# abrasive belt | Kitchenware |
| NO.400 | Gloss close to BA | Grinding with 400# polishing wheel | General materials, construction materials, kitchen utensils |
| HL | Hairline Grinding | Appropriate particle material for hairline grinding (150~240#) has a lot of abrasive grains | Buildings, building materials |
| NO.7 | Close to mirror finish | Grinding with 600# rotary polishing wheel | Art, decoration |
| NO.8 | Mirror grinding | Mirrors are ground with buffing wheels | Mirror, decorative |
