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Stainless steel

Time:2015-09-25 16:13:25
There are different types of stainless steels: when nickel is added, for instance, the austenite structure of iron is stabilized. This crystal structure makes such steels virtually non-magnetic and less brittle at low temperatures. For greater hardness and strength, more carbon is added. With proper heat treatment, these steels are used for such products as razor blades, cutlery, and tools.
Significant quantities of manganese have been used in many stainless steel compositions. Manganese preserves an austenitic structure in the steel, similar to nickel, but at a lower cost.
Stainless steels are also classified by their crystalline structure: 
Austenitic stainless steel, Ferritic stainless steel,Martensitic stainless steel, Duplex stainless steel.
The stainless steel applications as below:
  • Cutlery and kitchenware
  • Chemical, processing and oil & gas industries
  • Power generation
  • Food production
  • Architecture, building and construction
  • Medical applications
  • Automotive
  • Continue reading
Stainless Steel Surface Finish:
No. 0: Hot rolled, annealed, thicker plates
No. 1: Hot rolled, annealed and passivated
No. 2D: Cold rolled, annealed, pickled and passivated
No. 2B: Same as above with additional pass-through highly polished rollers
No. 2BA: Bright annealed (BA or 2R) same as above then bright annealed under oxygen-free atmospheric condition
No. 3: Coarse abrasive finish applied mechanically
No. 4: Brushed finish
No. 5: Satin finish
No. 6: Matte finish (brushed but smoother than #4)
No. 7: Reflective finish
No. 8: Mirror finish
No. 9: Bead blast finish
No. 10: Heat colored finish-wide range of electropolished and heat colored surfaces
The Grades of SDJS Stainless steel are as follows:
ASTM UNS JIS EN DIN GB
201 S20100 SUS201 1.4372 X12CrMnNiN17-7-5 12Cr17Mn6Ni5N
202 S20200 SUS202 1.4373 X12CrMnNiN18-9-5 12Cr18Mn9Ni5N
301 S30100 SUS301 1.4319 X5CrNi17-7 12Cr17Ni7
304 S30400 SUS304 1.4301 X5CrNi18-10 06Cr19Ni10
304L S30403 SUS304L 1.4306 X2CrNi19-11 022Cr19Ni10
304N S30451 SUS304N1 1.4315 X5CrNi19-9 06Cr19Ni10N
XM21 S30452 SUS304N2     06Cr19Ni10NbN
304LN S30453 SUS304LN   X2CrNiN18-10 022Cr19Ni10N
305 S30500 SUS305 1.4303 X4CrNi18-12 10Cr18Ni12
309S S30908 SUS309S 1.4833 X12CrNi23-13 06Cr23Ni10N
310S S31008 SUS310S 1.4845 X8CrNi25-21 06Cr25Ni20
316 S31600 SUS316 1.4401 X5CrNiMo17-12-2 06Cr17Ni12Mo2
316Ti S31635 SUS316Ti 1.4571 X6CrNiMoTi17-12-2 06Cr17Ni12Mo2Ti
316L S31603 SUS316L 1.4404 X2CrNiMo17-12-2 022Cr17nNi12Mo2
316N S31651 SUS316N     06Cr17Ni12Mo2N
316LN S31653 SUS316J1 1.4429 X2CrNiMoN17-13-3 022Cr17nNi12Mo2N
    SUS316J1     06Cr18Ni12Mo2Cu2
    SUS316J1L     022Cr18Ni14Mo2Cu2
317 S31700 SUS317     06Cr19Ni13Mo3
317L S31703 SUS317L 1.4438 X2CrNiMo18-15-4 022Cr19Ni13Mo3
321 S32100 SUS321 1.4541 X6CrNiTi18-10 06Cr18Ni11Ti
347 S34700 SUS347 1.455 X6CrNiNb18-10 06Cr18Ni11Nb
405 S40500 SUS405 1.4402 X6CrAl13 06Cr13Al
409 S40900 SUS409 1.4512 X2CrTi12 022Cr11Ti
    SUS410L     022Cr12
430 S43000 SUS430 1.4016 X6Cr17 10Cr17
434 S43400 SUS434 1.4113 X6CrMo17-1 10Cr17Mo
  S43940   1.4509 X2CrTiNb18 022Cr18NbTi
444 S44400 SUS444 1.4521 X2CrMoTi18-2 019Cr19Mo2NbTi
403 S40300 SUS403     12Cr12
410 S41000 SUS410 1.4006 X12Cr13 12Cr13
420 S42000 SUS420J1 1.4021 X20Cr13 20Cr13
    SUS420J2 1.4028 X30Cr13 30Cr13
440A S44002 SUS440A     68Cr17

Stainless steel

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