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Appendix I: Alloys in the Socrates System

Ferritic Stainless Steels Martensitic Stainless Steels Duplex Stainless Steels
UNS No. Common Name UNS No. Common Name UNS No. Common Name
S40900 409 S50400 9CR-1MO-1 S31500 3RE60
S40500 405 K90941 9CR-1MO-2 S32900 329
S42900 429 J91150 CA-15 S32404 URANUS-50
S43000 430 S41000 410 S31200 44LN
S44200 442 J91151 CA-15M S31803 2205-22-Cr
S43400 434 S42000 420 S32550 Ferralium-255
S43600 436 J91540 CA-6NM S31260 DP-3-25-Cr
S44600 446 S42400 F6NM-1
S44400 18-2 S41500 F6NM-2
S44626 26-1-Ti
S44627 26-1-Cb
S44660 SC-1
S44635 26-4-4
S44700 29-4
S44800 29-4-2
S44735 29-4C


Precipitation Hardened Stainless Steel Conventional Austenitic Stainless Steel High Alloy Austenitic Stainless Steel
UNS No. Common Name UNS No. Common Name UNS No. Common Name
S45500 Custom-455 S30200 302 N08020 20-CB-3
S36200 ALMAR-362 J92500 CF-3 N08904 904L
S15500 15-5PH S32100 321 N08024 20MO-4
S17600 STAINLESS-W S31600 316 N08028 ALLOY-28
S17400 17-4-PH S34700 347 N31254 254-SMO
S45000 CUSTOM-450 S38100 18-18-2 N08367 ALLOY-6XN
S17700 17-7-PH S30500 305
S66286 ALLOY-A286 S30400 304
S13800 PH-13-8-MO S30403 304L
S15700 PH-15-7-MO J92600 CF-8
S35500 AM-355 S30800 308
S30900 309
J92800 CF-8
S31000 310
J92900 CF-8M
S31603 316L
S20910 22-13-5

Solid Solution Nickel Alloys Precipitation Hardened Nickel Alloys Cobalt Base Alloys
UNS No. Common Name UNS No. Common Name UNS No. Common Name
N08825 ALLOY-825 N07750 ALLOY-X-750 R30260 ALLOY-2602
N06975 ALLOY-2550 N07031 ALLOY-31 R30155 N-155
N06985 ALLOY-G-3 N09925 ALLOY-925 R30031 STELLITE-31
N06007 ALLOY-G N07718 ALLOY-718 R30006 STELLITE-6
N06625 ALLOY-625 N07716 625-PLUS R30003 ELGILOY
N06110 ALLCORR N07725 ALLOY-725 R30188 ALLOY-188
N06455 ALLOY-C-4 N06625 ALLOY-625 R30605 ALLOY-L-605
N06022 ALLOY-C-22 R30159 MP159
N10276 ALLOY-C-276 R30035 MP35N
N10002 ALLOY-C
N06975 ALLOY-G-2
N06030 ALLOY-G-30
Zirconium Alloys Titanium Alloys Nickel Copper Alloys
UNS No. Common Name UNS No. Common Name UNS No. Common Name
R60702 Zr-702 R50400 TI-GRADE2 N04400 MONEL-400
R60704 Zr-704 R53400 TI-GRADE12 N04405 MONEL-R405
R60705 Zr-705 R58640 TI-6246 N05500 MONEL-K500
R56401 TI-6Al-4V