Corrosion resistance is chosen with stainless steel of the austenite organization including Cr 13-30% and Ni 6-20% and the Cr system is chosen. High frequency sign JIS sign Chemical composition(%) Character and usage C Si Mn P S Ni Cr Mo Cu Others U201 SUS201 0.15 or less 1.00 or less 5.50〜 7.50 0.060 or less 0.0 under-30 3.50〜 5.50 16.00〜 18.00 - - N 0.25 or less Ni saving steel kind and 301 substitution steels. It has magnetism by the cold working. Rolling stock. U202 SUS202 0.15 or less 1.00 or less 7.50〜 10.00 0.060 or less 0.0 under-30 4.00〜 6.00 17.00〜 19.00 - - N 0.25 or less Ni saving steel kind and 302 substitution steels. Cooking utensils. U301 SUS301 0.15 or less 1.00 or less 2.00 or less 0.045 or less 0.0 under-30 6.00〜 8.00 16.00〜 18.00 - - - The high intensity is obtained by the cold working. Rolling stock, belt conveyor, bolt, nut, and spring. U302 SUS302 0.15 or less 1.00 or less 2.00 or less 0.045 or less 0.0 under-30 8.00〜 10.00 17.00〜 19.00 - - - The expansion is a little inferior to 301 though the high intensity is obtained by the cold working. Building exterior material. U303 SUS303 0.15 or less 1.00 or less 2.00 or less 0.20 or less 0.15 more 8.00〜 10.00 17.00〜 19.00 ※ - - On inclination of ..being ground.. printing. It is the best for an automatic board. Bolt and nut. U303Se SUS303Se 0.15 or less 1.00 or less 2.00 or less 0.20 or less 0.060 or less 8.00〜 10.00 17.00〜 19.00 - - Se 0.15 more On inclination of ..being ground.. printing. It is the best for an automatic board. Rivet and screw. U304 SUS304 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 8.00〜 10.50 18.00〜 20.00 - - - It most widely uses it as stainless steel and heat resisting steel. For food equipment, generalization study equipment, and nuclear power U304L SUS304L 0.030 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 9.00〜 13.00 18.00〜 20.00 - - - 304 extra-low carbon steels. Parts in which cannot it excel in intergranular corrosion, and post weld heat treatment be done. U304N1 SUS304N1 0.08 or less 1.00 or less 2.50 or less 0.040 or less 0.0 under-30 7.00〜 10.50 18.00〜 20.00 - - N 0.10〜 0.25 N is added to 304, strength is improved while suppressing the decrease of ductility, and there is thickness reducing effectiveness of the raw material. Strength member for structure. U304N2 SUS304N2 0.08 or less 1.00 or less 2.50 or less 0.040 or less 0.0 under-30 7.50〜 10.50 18.00〜 20.00 - Nb 0.15 or less N 0.15〜 0.30 N and Nb were added to 304, and the effect of the ditto was given. The usage is the same as 304N1 U304LN SUS304LN 0.030 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 8.50〜 11.50 17.00〜 19.00 - - N 0.12〜 0.22 N was added to 304L, and the effect of the ditto was given. It excels in intergranular corrosion though the usage applies to 304N1. U305 SUS305 0.12 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 10.50〜 13.00 17.00〜 19.00 - - - Work hardening is lower than 304. For cold forging ..pulling out specially... the spatula stop U309S SUS309S 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 13.00〜 15.00 22.00〜 24.00 - - - It is often actually used as heat resisting steel though corrosion resistance is more excellent than 304. U310S SUS310S 0.08 or less 1.50 or less 2.00 or less 0.040 or less 0.0 under-30 19.00〜 22.00 24.00〜 26.00 - - - An oxidizing is excellent by 309 left-hand lays, and it is used actually as heat resisting steel. U316 SUS316 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 10.00〜 14.00 16.00〜 18.00 2.00〜 3.00 - - There is corrosion resistance that is more excellent than 304 in various media including seawater. Pitting corrosion raw material. U316L SUS316L 0.030 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 12.00〜 15.00 16.00〜 18.00 2.00〜 3.00 - - 316 extra-low carbon steels. The one that intergranular corrosion was given to character of 316. U316N SUS316N 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 10.00〜 14.00 16.00〜 18.00 2.00〜 3.00 - N 0.10〜 0.22 N is added to 316, strength is improved while suppressing the decrease of ductility, and there is thickness reducing effectiveness of the raw material. Strength member with excellent corrosion resistance. U316LN SUS316LN 0.030 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 10.50〜 14.50 16.50〜 18.50 2.00〜 3.00 - N 0.12〜 0.22 N was added to 316L, and the characteristic of the ditto was given. It excels in intergranular corrosion though the usage applies to 316N. U316J1 SUS316J1 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 10.00〜 14.00 17.00〜 19.00 1.20〜 2.75 1.00〜 2.50 - Raw material for sulfuric acid whose corrosion resistance and pitting corrosion are more excellent than 316. U316J1L SUS316J1L 0.030 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 12.00〜 16.00 17.00〜 19.00 1.20〜 2.75 1.00〜 2.50 - Low carbon steel of 316J1. The one that intergranular corrosion was given to 316J1. U317 SUS317 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 11.00〜 15.00 18.00〜 20.00 3.00〜 4.00 - - A pitting corrosion is more excellent than 316. Dye equipment raw material etc. U317L SUS317L 0.030 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 11.00〜 15.00 18.00〜 20.00 3.00〜 4.00 - - 317 extra-low carbon steels. The one that intergranular corrosion was given to 317. U317J1 SUS317J1 0.040 or less 1.00 or less 2.50 or less 0.040 or less 0.0 under-30 15.00〜 17.00 16.00〜 19.00 4.00〜 6.00 - - For environment that 316L and 317L like heat exchanger, acetic acid plant, phosphoric acid plant, and bleaching equipment, etc. that handle liquid including chlorine ion are not endured U321 SUS321 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 9.00〜 13.00 17.00〜 19.00 - - Ti 5×C％ more The one that Ti is added, and intergranular corrosion was improved. It is not possible to recommend it to the decoration parts. U347 SUS347 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 9.00〜 13.00 17.00〜 19.00 - - Nb+Ta 10×C％ more The one that Nb is contained, and intergranular corrosion was improved. UXM7 SUSXM7 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 8.50〜 10.50 17.00〜 19.00 - 3.00〜 4.00 - Steel kind that adds Cu to 304, and attempts improvement of cold working. For cold forging UXM15J1 SUSXM15J1 0.08 or less 3.00〜 5.00 2.00 or less 0.040 or less 0.0 under-30 11.50〜 15.00 15.00〜 20.00 - - - 304 Ni is increased, Si is added, and stress corrosion cracking is improved. For environment including chlorine ion U305J1 SUS305J1 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 11.00〜 13.50 16.50〜 19.00 - - - With 305 low carbon steels. Work hardening is low. 305 and the usage are the same. U384 SUS384 0.08 or less 1.00 or less 2.00 or less 0.040 or less 0.0 under-30 17.00〜 19.00 15.00〜 19.00 - - - Wood for cold forging and cold molding with which work hardening is low, and severer than 305. High frequency sign JIS sign C Si Mn P S Ni Cr Mo Cu Others Character and usage Chemical composition(%) - Mo 0.60% or less can be added.

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