COGNE
GRADE		 Improved
machinability		 EN, DIN, UNI W.N. BS AFNOR SIS
(SWEDEN)		 SUS
(JAPAN)		 AISI ASTM
ASME		 AISI UNS
Austenitic grades
303/1 IMCO® X8 CrNiS 18-9 1.4305 303S31 Z8 CNF 18-09 2346 303 303 8F B8F S30300
303K IMCO® X6CrNiCuS18-9-2 1.4570 Z8 CNUF 18-09
309 Si X15CrNiSi 20-12 1.4828 309S24 Z7 CNS 20-12 309 309 S30900
310/1 X8 CrNi 25-21 1.4845 310S31 Z8 CN 25-20 2361 310S 310S S31008
314L1 X15 CrNiSi 25-21 1.4841 314S25 Z 15 CNS 25-20 Y310 314 S31400
316LK IMCO® X2CrNiMoCuS17-10-2 1.4598 316F S31620
316LM X2CrNiMo18-14-3 1.4435 316S13 Z3 CND 18-14-03 2353 316L 316L S31603 J92800
316LM1 X2CrNiMo18-14-3 1.4435 4341/B Z3 CND 18-14-04 2354 316L 316L F138gr2 S31603 J92800
316LM2 IMCO® X2CrNiMo18-14-3 1.4435 316S13 Z3 CND 18-14-03 2353 316L 316L S31603 J92800
316T/1 IMCO® X6CrNiMoTi17-12-2 1.4571 320S31 Z6 CNDT 17-12 2350 316Ti 316Ti S31635
321/3 IMCO® X6 CrNiTi 18-10 1.4541 321S31 Z6CNT18-10 2337 321 321 S32100
F304 IMCO® X5CrNi18-10 1.4301 304S31 Z7 CN 18-09 2332 2333 304 304 B8 S30400
F304L1 IMCO® X2 CrNi 18-9 1.4307 304S11 Z2 CN 18-10 304L S30403
F316 IMCO® X5 CrNiMo 17-12-2 1.4401 316S31 Z7CND 17-12-02 2347 316 316 8M B8M S31600
F316L IMCO® X2CrNiMo17-12-2 1.4404 316S11 Z3 CND 17-12-02 2348 316L 316L 8M B8M S31603
Ferritic grade
430/1 X6 Cr 17 1.4016 430S17 Z8 C 17 2320 430 430 S43000
430F/6 IMCO® X6CrMoS17 1.4105 Z8 CF 17 430F Solenoid
Martensitic grades
410/2 X12Cr13 1.4006 410S21 Z 10 C 13 2302 410 410 S41000 J91150
410/6 IMCO® X12Cr13 1.4006 410S21 Z 10 C 13 2302 410 410 S41000 J91150
415M X 4 CrNiMo 16-5-1 1.4418 Z6 CND 16-05-01 2387
416/1 IMCO® X 12 Cr S13 1.4005 416S21 Z11 CF 13 2380 416 416 S41600
420A/7 IMCO® X20Cr13 1.4021 420S29 Z20C13 2303 420J1 420L S42010
420B/4 IMCO® X30Cr13 1.4028 420S37 Z33 C 13 2304 420J2 420M S42000
420BF2 IMCO® X29CrS13 1.4029 416S37 Z29CF13 420F S42020 J91153
420C/1 X46Cr13 1.4034 Z44 C14
420C/4 IMCO® X46Cr13 1.4034 Z44 C14
420D X65Cr13 1.4037
420RM X39CrMo17-1 1.4122 Z38CD 16-01
430F IMCO® X14CrMoS17 1.4104 Z13 CF 17 2383 430F 430F S43020
431 IMCO® X17CrNi16-2 1.4057 431S29 Z15 CN 16-02 2321 431 431 S43100
440B1 X90CrMoV18 1.4112 440B 440B S44003
440C X105CrMo17 1.4125 Z100 CD 17 440C 440C S44025
E415 X3CrNiMo13-4 1.4313 425C12 Z4 CND 13-4M SCS5 F6NM S41500 J91540