Bobina de acero inoxidable AISI 316 y 316L

316/316L Stainless Steel Coil:

Introduction：

316l steel is widely used in the chemical industry because of its excellent corrosion resistance. 316l steel is also a derivative of 18-8 austenitic stainless steel, with 2 ~ 3% Mo element added. On the basis of 316L, many kinds of steel are derived. For example, 316Ti is derived by adding a small amount of Ti, 316N is derived by adding a small amount of N, and 317L is derived by increasing Ni and Mo contents.

 Most of the 316l steel on the market is produced according to American standard. For the sake of cost, steel mills generally put the Ni content of products as low as possible. The us standard stipulates that the Ni content of 316l steel is 10-14%, while the Japanese standard stipulates that the Ni content of 316l steel is 12-15%. According to the minimum standard, there is a 2% difference between American standard and Japanese standard in Ni content, which is quite huge in price. Therefore, customers still need to see clearly when purchasing 316l steel products, and the products should refer to ASTM or JIS standard.

 With the Mo content of 316l, the steel has excellent pitting resistance and can be safely applied in environments containing Cl- and other halogen ions. Since 316L is mainly used for its chemical properties, steel mills have lower requirements for surface inspection of 316L steel (compared with 304), and customers with higher requirements should strengthen the surface inspection.

 Mechanical properties :

 Sigma b (MPa) : ≥480

 Conditional yield strength sigma 0.2 (MPa) : ≥177

 Elongation 5 (%) : ≥40

 Reduction of area bits (%) : 60 or higher

 Hardness: 187 hb or less; 90 HRB or less; 200 hv or less

 Hardness ≤187HB ≤90HRB ≤200HV

 Density: 7.98g/cm3;

 Specific heat capacity ratio (20℃) : 0.502j /(g*K)

USE:

Bai for pipeline, Du for heat exchanger, food industry, chemical industry, watch industry, etc. C ≤ 0.03 Si ≤ 1.0mn ≤ 2.00p ≤ 0.045s ≤ 0.030ni: 10.0-14.0cr: 16.0-18.0mo: 2.0-3.0 melting point: 1375 ~ zhi1450c; Dao solution treatment: 1010 ~ 1150C. 1) Annealing solution state: No.1, 2b, N0.4, HL and other surface states. 316L is a kind of molybdenum containing stainless steel. Due to the molybdenum content in the steel, the overall performance of this steel is better than 310 and 304 stainless steel. Under high temperature conditions, when the concentration of sulfuric acid is lower than 15% or higher than 85%, 316L stainless steel has a wide range of applications. 316L stainless steel also has good resistance to chloride corrosion, so it is usually used in marine environment. 316L stainless steel has a maximum carbon content of 0.03, which can be used in applications where annealing is not possible and maximum corrosion resistance is required. The corrosion resistance is better than 304 stainless steel. It has good corrosion resistance in the production of pulp and paper. Moreover, 316L stainless steel is also resistant to marine and corrosive industrial atmosphere. 316L stainless steel has good oxidation resistance when the heat resistance is below 1600 ℃ and continuous use below 700 ℃. In the range of 800-1575 degrees, it is better not to act continuously. However, when 316L stainless steel is continuously used outside the temperature range, the stainless steel has good heat resistance. The carbide precipitation resistance of 316L stainless steel is better than that of 316 stainless steel, and the above temperature range can be used. The heat treatment was carried out in the temperature range of 1010-1150 degrees, followed by rapid cooling. 316L stainless steel cannot be hardened by over heat treatment. Welding 316L stainless steel has good weldability. All standard welding methods can be used for welding. 316cb, 316L or 309cb stainless steel filler rods or electrodes can be used for welding according to the application. In order to obtain the best corrosion resistance, the welding section of 316 stainless steel needs post weld annealing treatment. If 316L stainless steel is used, post weld annealing is not required. Mechanical properties of 316L stainless steel: tensile strength (MPA) 485 min yield strength (MPA) 170 min elongation (%) 30 min area reduction (%) 40 min density of 316L stainless steel is 7.93 g / cm3, Hardness: HRB < 90, HV < 200, HBS < 187, typical uses: pulp and paper equipment, heat exchanger, dyeing equipment, film processing equipment, pipelines, materials for the exterior of buildings in coastal areas, as well as watch chains and case of advanced watches. Equipment used in seawater, chemical, dye, papermaking, oxalic acid, fertilizer and other production equipment; photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts.