304L stainless steel grades: 00Cr19Ni10 (0Cr18Ni10), 
 304L stainless steel plate (6) Analysis of 304L stainless steel chemical chemical composition% 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 . 304L stainless steel mechanical properties: yield strength (N/mm2) ≥ 205 Tensile strength ≥ 520 extends rate (%) ≥ 40 Hardness HB ≤ 187 HRB ≤ 90 HV ≤ 200 stainless steel rod 
 Density 7.93 g · cm-3, the specific heat c (20 ° C) 0.502 J · (g · C) -1 thermal conductivity λ / W (m ° C) -1 (in the following temperature / ° C) 20 100 500 12.1 16.3 21.4 linear expansion coefficient α / (10-6 / ℃) (between the following temperature / ° C) 20 to 100 20 to 200 20 300 20 ~~ 400 16.0 16.8 17.5 18.1 resistivity of 0.73 Ω · mm2 · m-1 melting point of 1398 to 1420 ℃ 304 is a versatile stainless steel is widely used to produce good overall performance requirements (corrosion resistance and formability) of equipment and parts. 301 stainless steel showing the deformation hardening for various occasions require a higher intensity. 302 stainless steel is essentially a variant of the higher carbon content of 304 stainless steel, by cold rolling allows it to obtain higher strength. 302B is a high silicon content stainless steel, it has a high temperature oxidation resistance. The 303 and 303Se respectively containing sulfur and selenium cutting stainless steel, for occasions that require cutting and Table Guanghao high. 303Se stainless steel is also used to make parts hot upsetting, because under such conditions, the stainless steel has good hot workability. 304L is a low carbon content 304 stainless steel variants for the occasions of the need for welding. The lower carbon content makes the precipitation of carbides in the heat affected zone close to the weld can be minimized, and carbide precipitation in some environments may cause the stainless steel to intergranular corrosion (weld erosion). 304N is a nitrogen-containing stainless steel, the nitrogen is added in order to improve the strength of steel. 305 and 384 stainless steel with high nickel and low rate of work hardening, cold formability requirements apply to a variety of occasions. 308 stainless steel for the production of electrodes. 309,310,314 and 330 stainless steel, nickel, chromium content is relatively high, in order to improve the oxidation resistance of steel under high temperature and creep strength. And 309S and 310S but 309 and 310 stainless steel variant, are different by just a lower carbon content, as is precipitated in the vicinity of the weld to minimize carbide. 330 stainless steel has a particularly high resistance to carburizing capacity and thermal shock resistance. 316 and 317 stainless steel containing molybdenum, and thus the resistance to pitting corrosion in marine and chemical industrial environment greatly superior to 304 stainless steel. , Type 316 stainless steel variants, including low-carbon stainless steel 316L high strength stainless steel containing nitrogen. 316N and higher sulfur content cutting stainless steel 316F. 321,347 and 348 respectively to the titanium, niobium plus tantalum, niobium stabilized stainless steel, suitable for high temperature use of the welding member. 348 stainless steel is one for the nuclear power industry, has certain limitations on the aggregate amount of tantalum and drilling. The poor performance of 304L stainless steel forging, the deformation is more difficult. Due to the presence of the phenomenon of work hardening. In the the mandrel pulling long process in the amount of deformation can not give too much. And heat loss. Therefore must be teaching more fire times molding. Stage of high temperature insulation is not handled properly, will result in a coarse-grained. 
 The density of the commonly used grades of stainless steel 
 Steel Grade Density (g/cm3) 
 The density of steel grade 
 304,304 L, 305,321 
 201,202,301,302 7.93 
 316,316 L, 347 
 309S, 310S 7.98 
 405,410,420 7.75 
 409,430,434 7.7