The difference between SS304 and 304 and SS316 and 316
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Purchase plate, 0Cr19Ni9 (0Cr18Ni9), 304 is equivalent to my country's 0Cr19Ni9 (0Cr18Ni9) stainless steel. Such as the table China Japan United Kingdom Germany France Former Soviet Union GB1220-92JISAISIBS 970 Part4DIN 17440NFA35-572TOCT5632GB3220-92?UNSBS 1449 Part2DIN 17224NFA35-576~582 0Cr18Ni9SUS304304304S15X2CrNi89Z6CN18.0908×18B1000Cr19Ni10SUS304L304L304S12X2CrNi189Z2CN18.0903×18H110Cr17Ni12M o2SUS316316316S16X5CrNiMo1812Z6CND17.1208×17H12M2T00Cr17Ni14Mo2SUS316L316L316S12X2CrNiMo1812Z2CND17.1203×17H12M2 When purchasing valves or pumps, the material markings are SS304 and SS316. Question: What is the difference between the material markings of valves or pumps and 304 and 316 in the table? Why do we need to add SS???
The materials should be the same, but the standard markings of plates, rods, pipes, and pumps and valves are slightly different. For example, it is also 304, the plate is TYPE 304, the pipe is TP304, the casting is F 304, and the pump valve is SS304.
This post was last edited by fzujunru on 2015-3-26 16:37 ss means stainless steel stainless steel,,, adding SS belongs to* A common practice?
The difference in material standards is that S30408 is a domestic material and 304 is an ASME standard.