Classification of Stainless Steel Plates
1. According to the thickness
- Thin plate (0.2mm-4mm)
- Middle plate (4mm-20mm)
- Thick plates (20mm-60mm)
- Extra thick plates (60-115mm)
2. According to the production method
3. According to surface characteristics
| Surface | Characteristics | Summary of Manufacturing Methods | Usages |
|---|---|---|---|
| NO.1 | silver white matt | hot rolled to specified thickness | no need for surface gloss purposes |
| 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 pass of light cold rolling is carried out through polishing rollers. | General materials |
| BA | as bright as a mirror | There is no standard, but it is usually a bright annealed surface processing with high surface reflectivity. | Building materials, kitchen utensils |
| NO.3 | Coarse grinding | Use 100~200# (unit) grinding belts to grind | building materials and kitchen utensils |
| NO.4 | Intermediate grinding | A polished surface obtained by grinding with 150~180# stone abrasive belt | Same as above |
| NO.240 | fine grinding | Use 240# stone grinding belt for grinding | kitchen utensils |
| NO.320 | ultra-fine grinding | Use 320# stone grinding belt for grinding | Same as above |
| NO.400 | Gloss close to BA | Grinding with 400# polishing wheel | General timber, construction timber, kitchen utensils |
| HL | Hairline grinding | Grinding the hairline with the appropriate particle size (150~240#) has many grains. | Buildings and construction materials |
| NO.7 | Close to mirror polishing | Use 600# rotary polishing wheel for grinding | For art and decoration |
| NO.8 | Mirror grinding | Grinding mirrors with polishing wheels | Reflector, for decoration |
4. According to purpose
- Bridge steel plate
- Boiler steel plate
- Shipbuilding steel plate
- Armor steel plate
- Automobile steel plate
- Roof steel plate
- Structural steel plate
- Electrical steel plate (silicon steel sheet)
- Spring steel plate
- Special solar panel (Hairui Special Steel)
- Other, Common Japanese grades in steel plates for general and mechanical structures.
5. Organized by steel type
- Austenite type
- Austenite-ferrite type
- Ferrite type
- Martensitic type,
Precipitation hardening note: Precipitation hardening (precipitation hardening): refers to a heat treatment process in which the solute atom segregation zone of the metal in a supersaturated solid solution and/or the dissolution particles are dispersed and distributed in the matrix to cause hardening. For example, austenitic precipitated stainless steel can be subjected to precipitation hardening treatment at 400-500°C or 700-800°C after solution treatment or cold working to obtain high strength. That is, the supersaturated solid solution of some alloys is placed at room temperature or heated to more>>
JIS
1. In the grades of Japanese steel (JIS series), ordinary structural steel is mainly composed of three parts. The first part represents the material, such as: S (Steel) represents steel, F (Ferrum) represents iron; the second part represents different shapes, types, Uses, such as P (Plate) for plates, T (Tube) for tubes, K (Kogu) for tools; the third part represents characteristic numbers, generally the lowest tensile strength. Such as: SS400-the first S means steel (Steel), the second S means “Structure”, 400 is the lower limit tensile strength of 400MPa, and the overall designation is ordinary structural steel with a tensile strength of 400MPa.
SPHC
2. SPHC-the first S is the abbreviation of Steel, P is the abbreviation of Plate, H is the abbreviation of Heat Heat, and C is the abbreviation of Commercial Commercial, which generally means that hot-rolled steel plates and steel strips are generally used.
SPHD
3. SPHD-stands for hot rolled steel plates and steel strips for stamping.
SPHE
4. SPHE-stands for hot rolled steel plates and strips for deep drawing.
SPCC
5. SPCC——It means that cold-rolled carbon steel sheets and steel strips are generally used, which is equivalent to the medium Q195A grade. The third letter C is the abbreviation of Cold. When you need to ensure the tensile test, add T to the end of the grade as SPCCT.
SPCD
6. SPCD-means cold-rolled carbon steel sheet and steel strip for stamping, which is equivalent to China 08AL (13237) high-quality carbon structural steel.
SPCE
7. SPCE-means cold-rolled carbon steel sheet and strip for deep drawing, which is equivalent to China 08AL (5213) deep drawing steel. When it is necessary to ensure non-timeliness, add N to the end of the grade as SPCEN. Cold-rolled carbon steel sheet and steel strip quenching and tempering code: annealing state is A, standard quenching and tempering are S, 1/8 hard is 8, 1/4 hard is 4, 1/2 hard is 2, and hard is 1. Surface processing code: D for matt finish rolling and B for bright finish rolling. SPCC-SD stands for standard hardened and tempered, matt finish rolled cold rolled carbon sheet for general use. Another example is SPCCT-SB, which means cold-rolled carbon sheet with standard quenching and tempering, bright processing, and mechanical properties.
8. The expression method of steel grades for JIS mechanical structure is: S+carbon content+letter code (C, CK), where the carbon content is represented by the middle value×100, and the letter C: represents carbon K: represents steel for carburizing. For example, the carbon content of S20C is 0.18-0.23%. 3. The method of expressing the grades of silicon steel sheets in China and Japan.