Stainless steel belt surface, each 2 b and BA is what mean

There are many types of stainless steel with cold rolled product surface, including 2 b and BA are the main two kinds of surface. The 2 b and BA, respectively is what mean? They refers to the surface of cold rolling process of different categories, among them, 2 b is the formation of cold rolled - - Annealing pickling - - The formation of level off, BA is cold rolled - - Bright annealing - - Level off, the main difference is that the different annealing process, 2 b is annealing pickling, the surface has a certain degree of oxidation and dark; BA is bright annealing, surface oxidation, brighter. 304 is one of the main members of the family of stainless steel belt, huge production and circulation, and 304 j1 as 'brothers' of 304 stainless steel belt, is 304 copper materials, deep drawing performance is better than 304, is mainly used for processing purposes, belongs to the section of nickel series. 304 what's the difference between the stainless steel with hot rolled plate and the manufacture of rolling is divided into cold rolled and hot rolled, differentiator for recrystallization temperature. Hot rolled plate 1. Poor toughness and surface smoothness, low price; 2. Hot rolling temperature and the temperature of the forging close; 3. Hot plate, surface of oxide skin are processed using the hot rolled plate thickness under the poor; 4. Hot rolled product prices, and USES relative cold rolling more widely; 5. Hot rolled steel plate, the mechanical properties of far less cold, also is inferior to the forging processing, but has good toughness and ductility; 6. Not plating surface of hot rolled plate into dark brown; 7. After plating can be distinguish from the smooth degree of surface, hot rolled plate smoothness is low; Manufacture of 1. Stretching and resilient, but the price is more expensive; 2. Lengzha processing surface without scale, good quality; 3. Cold rolled generally used in the production of strip, the rolling speed is higher; 4. Cold rolling is higher than the thickness precision of hot rolling, mechanical properties, surface and so on are on hot rolling; 5. Cold rolled steel sheet due to a certain degree of strain hardening, toughness is low, but can reach better showed, used for cold bending spring pieces and parts; 6. Cold plate due to the yield point is close to the tensile strength, so no foresight to danger, in use process in the load exceeds allowable load 7 prone to accident. Not plated cold plate surface is gray. 8. Lengzha board after plating can smooth degree of surface is higher than the hot rolled plate.