Austenitic

These are the most popular of the stainless steels because of their ductility, ease of working and good corrosion resistance; they are derived from the 18Cr-8Ni stainless steel Type 304. The other grades are developed to provide special corrosion resistance properties by adding Molybdenum, Chromium and/or decreasing Carbon content (L grades).

Addition of stabilizing elements like Titanium or Niobium (Columbium) provides better weldability. Addition of Nitrogen increases mechanical strength as for grades 304N or 316N.

They are also available in the heat resistant version (H grades) with a higher Carbon content and coarser grain size to improve creep resistance. They can be used up to 870°C /1600°F.

They also exhibit good ductility and toughness even at cryogenic temperatures.

All are essentially nonmagnetic in the annealed condition, although some may become slightly magnetic by cold working.

The major weakness of the austenitic stainless steels is their susceptibility to chloride stress corrosion cracking (SCC).

They serve a wide range of applications: architecture, food processing environments, organic and inorganic chemicals environments in the process industry, nitric acid and sulphuric acids at moderate temperature and concentrations, equipment for use at cryogenic temperatures, storage and transportation of liquefied gases, transportation, water and wastewater treatment…

INDUSTEEL TRADEMARKS
UNS
ASTM
EURONORMS EN
SUS
UR™ 317LMN S31726 317LMN 1.4439
X2CrNiMoN17-13-5
-
UR™ 317LN S31753 317LN 1.4434
X2CrNiMoN18-12-4
SUS 317LN
UR™ 317L S31703 317L 1.4438
X2CrNiMo18-15-4
SUS 317L
UR™ 316LN S31653 316LN 1.4429
X2CrNiMoN17-13-3
SUS 316LN
UR™ 316LMo S31603 316L 1.4432
X2CrNiMo17-12-3
-
UR™ 316 S31600 316 1.4436
X3CrNiMo17-13-3
SUS 316
UR™ 316H S31609 316H 1.4401
X5CrNiMo17-12-2
SUS 316
UR™ 316L S31603 316L 1.4404
X2CrNiMo17-12-2
SUS 316L
UR™ 316Ti S31635 316Ti 1.4571
X6CrNiMoTi17-12-2
SUS 316Ti
UR™ 316Nb S31640 316Cb 1.4580
X6CrNiMoNb17-12-2
-
UR™ 304H S30400 304(H) 1.4301
X5CrNi18-10
SUS 304
UR™ 304L S30403 304L 1.4307
X2CrNi18-9
SUS 304L
UR™ 304L S30403 304L 1.4306
X2CrNi19-11
SUS 304L
UR™ 321 S32100 321 1.4541
X6CrNiTi18-10
SUS 321
UR™ 347 S34700 347 1.4550
X6CrNiNb18-10
SUS 347
UR™ 304N S30451 304N 1.4315
X5CrNiN19-9
SUS 304N1
UR™ 304LN S30453 304LN 1.4311
X2CrNiN18-10
SUS 304LN
CryElso™ 201LN S20153 201LN 1.4371
X2CrMnNiN17-7-5
-
UR™ XM19 S20910 XM19 -
-
UR™ XM 29 S24000 XM29 -
-