304L stainless steel 304L stainless steel 304L stainless steel is a versatile material. 304L stainless steel grades: 00Cr19Ni10 (0Cr18Ni10), 

 Chemical composition% 304L stainless steel chemical 

 C: ≤ 0.03, Si: ≤ 1.0, Mn: ≤ 2.0, Cr: 17.0 ~ 19.0, Ni: 8.0 ~ 11.0, S: ≤ 0.03, P: ≤ 0.035. The mechanical properties of 304L stainless steel: yield strength (N/mm2) ≥ 205 Tensile strength ≥ 520 Elongation (%) ≥ 40 hardness HB ≤ 187 HRB ≤ 90 HV ≤ 200 density of 7.93 g · cm-3 specific heat c (20 ℃ ) 0.502 J · (g · C) -1 Thermal conductivity λ / W (m · ℃) -1 (in the following temperature / ℃) 20 100 500 12.1 16.3 21.4 linear expansion coefficient α / (10-6 / ℃) ( In the following room temperature / ℃) 20 ~ 100 20 ~ 200 20 ~ 300 20 ~ 400 16.0 16.8 17.5 18.1 resistivity 0.73 Ω · mm2 · m-1 melting point of 1398 ~ 1420 ℃ 304 is a versatile stainless steel, it is widely requirements for the production of good overall performance (corrosion resistance and formability) of equipment and parts. 301 stainless steel in the deformation showing a significant hardening, higher strength is used on various occasions. 302 stainless steel is essentially a higher carbon content of 304 stainless steel variant, allows it to get through the cold-rolled high strength. 302B is a high silicon content of stainless steel, it has a high oxidation resistance. Are respectively 303 and 303Se containing sulfur and selenium-cutting stainless steel, the main requirements for cutting and high tables Guanghao occasions. Stainless steel is also required for the production of 303Se hot forging of parts, because in such conditions, this steel has good hot workability. 304L is a low-carbon 304 stainless steel variant, for the need for welding applications. Lower carbon content makes it close to the weld heat affected zone to minimize carbide precipitation, and carbide precipitation may result in some environments, stainless steel intergranular corrosion (weld erosion). 304N is a nitrogen-containing stainless steel, add nitrogen to improve the strength of steel. 305 and 384 stainless steel with high nickel, the hardening rate is low, suitable for cold forming requires a variety of occasions. 308 stainless steel for the production of electrodes. 309,310,314 and 330 stainless steel, nickel, chromium content is higher, in order to improve the steel under high temperature oxidation resistance and creep strength. The 30S5 and 310S stainless steel but 309 and 310 variants, which differ only low carbon content, in order to make the vicinity of the weld to minimize carbide precipitation. 330 stainless steel has a particularly high resistance to carburization and thermal shock resistance. 316 and 317 stainless steel with molybdenum, which in the marine environment and the chemical industry in the point of corrosion resistance far superior to 304 stainless steel. Among them, 316 stainless steel by a variety of low-carbon stainless steel 316L, nitrogen-containing high-strength stainless steel. 316N and combined with higher sulfur free cutting stainless steel 316F. 321,347 and 348 respectively of titanium, niobium plus tantalum, niobium stabilized stainless steel, suitable for high temperature components used in welding. 348 is a suitable nuclear power industry, stainless steel, tantalum, and the combined amount of drilling has certain limitations. Poor performance of 304L stainless steel forging, deformation more difficult. Because of work hardening. Making process in the mandrel stretching deformation can not be given too much. And heat losses. Must teach the next molding times more fire. High-temperature insulating phase, if handled properly, will result in coarse-grained.