International Standard Comparative

UNS umbering Systems.

Unified Numbering Systems for Metals and Alloys

50x50

The UNS for Metals and Alloys provides a means of correlating many internationally used metal and alloy numbering systems administered by societies, trade associations, and individual users and producers of metals and alloys. Jointly developed by ASTM International and the Society of Automotive Engineers (SAE), it provides the uniformity necessary for efficient indexing, record keeping, data storage and retrieval, and cross-referencing.

UNS Number C GROUP : Copper and Copper Alloys

C10100~C11300 | C11400~C16200 | C16500~C37000 | C37700~C65100

C84400~C94400 | C94500~C99500

UNS Number F GROUP : Cast Irons

F10001~F24830 | F25530~F47003

UNS Number G GROUP : AISI and SAE Carbon and Alloy Steels

G10050~G10250 | G10260~G11080 | G11090~G15720 | G31400~G44270 | G45200~G51600

G51601~G92600 | G92620~G98500

UNS Number J GROUP : Cast Steel (Except Tool Steels)

J02002~J13512 | J13855~J92590 | J92600~J94650

UNS Number K GROUP : Miscellaneous Steels and Ferrous Alloys

K00040~K02300 | K02301~K03017 | K03046~K07000 | K07001~K11630 | K11646~K12238

K12244~K19667 | K19965~K32550 | K32723~K93120 | K93600~K95000

UNS Number N GROUP : Nickel and Nickel Alloys

N02200~N07080 | N07353~N08811 | N08825~N10665

UNS Number S GROUP : Heat and Corrosion Refractory Metals and Alloys

S13800~S30200 | S30215~S30909 | S30940~S31654 | S31700~S35000 | S35500~S43035

S43036~S66545

Comparative Table

UNS Number K GROUP : Heat and Corrosion Refractory Metals and Alloys - S30215~S30909
UNS No
Description
ASTM Brand/Trp
ASTM Equivalent
UNS S30215 Austenitic Cr-Ni Stainless Steel 320B ASTM A167 (302B), ASTM A276 (302B), ASTM A314 (302B), ASTM A473
      (302B), ASTM A580 (302B)
UNS S30300 Free Machining Austenitic 303 ASTM A194 (303), ASTM A314 (303), ASTM A320 (303), ASTM A473 (303),
  Cr-Ni Stainless Steel   ASTM A581 (303), ASTM A582 (303)
UNS S30310 Austenitic Cr-Ni-Mn Free   ASTM A581 (XM-5), ASTM A582 (XM-5)
  Machining Stainless Steel    
UNS S30323 Free Machining Austenitic Se Bearing ASTM A194 (303 Se), ASTM A314 (303 Se), ASTM A320 (303 Se),
  Cr-Ni Stainless Steel   ASTM A473 (303 Se), ASTM A581 (303 Se), ASTM A582 (303 Se),
UNS S30345 Austenitic Cr-Ni-Al Free 303 MA ASTM A581 (XM-2), ASTM A582 (XM-2)
  Machining Stainless Steel    
UNS S30360 Austenitic Cr-Ni-Pb Free 303Pb ASTM A581 (XM-3), ASTM A582 (XM-3)
  Machining Stainless Steel    
UNS S30400 Austenitic Cr-Ni Stainless Steel   ASTM A167 (304), ASTM A182 (304), ASTM A193 (304), ASTM A194 (303),
      ASTM A213 (304), ASTM A240 (304), ASTM A249 (304), ASTM A269 (304),
      ASTM A270 (304), ASTM A271 (304), ASTM A276 (304), ASTM A312 (304),
      ASTM A313 (304), ASTM A314 (304), ASTM A320 (304), ASTM A358 (304),
      ASTM A368 (304), ASTM A376 (304), ASTM A409 (304), ASTM A430 (304),
      ASTM A473 (304), ASTM A478 (304), ASTM A479 (304), ASTM A492 (304),
      ASTM A493 (304), ASTM A511 (304), ASTM A554 (304), ASTM A580 (304),
      ASTM A632 (304), ASTM A666 (304), ASTM A688 (304)
UNS S30403 Austenitic Cr-Ni Stainless Steel 304L ASTM A167 (304 L), ASTM A182 (304 L), 213 (304 L), ASTM A240
  (Low Carbon)   (304 L), ASTM A249 (304 L), 269 (304 L), ASTM A276 (304 L),
      ASTM A312 (304 L), ASTM A314 (304 L), ASTM A479 (304 L),
      ASTM A473 (304 L), ASTM A478 (304 L), ASTM A479 (304 L), ASTM A511
      (304 L), ASTM A554 (304 L), ASTM A580 (304 L), ASTM A632 (304 L),
      ASTM A688 (304 L)
UNS S30409 Austenitic Cr-Ni Stainless Steel 304 H ASTM A182 (304 H), ASTM A213 (304 H), ASTM A240 (304 H), ASTM A249
      (304 H), ASTM A271 (304 H), ASTM A312 (304 H), ASTM A358 (304 L),
      ASTM A376 (304 N), ASTM A376 (304 H), ASTM A403 (304 L), ASTM A430
      (304 H), ASTM A479 (304 H)
UNS S30430 Austenitic Cr-Ni-Cu Low Work 18-9-LW ASTM A493 (XM-7)
  Hardening Stainless Steel    
UNS S30451 Austenitic Nitrogen Bearing Cr- 304 N ASTM A182 (304 N), ASTM A213 (304 N), ASTM A240 (304 N), ASTM A249
  Ni Stainless Steel   (304 N), ASTM A312 (304 N), ASTM A358 (304 N), ASTM A376 (304 N)
      , ASTM A403 (304 N), ASTM A430 (304 N), ASTM A479 (304 N)
       
UNS S30452 Austenitic Cr-Ni Stainless Steel,   ASTM A240 (XM-21), ASTM A276 (XM-21)
  High Nitrogen    
UNS S30453 Austenitic Nitrogen Bearing Cr- 304 LN ASTM A276
  Ni Stainless Steel    
UNS S30454 Austenitic Nitrogen Bearing Cr- 304(Hi)N ASTM A276
  Ni Stainless Steel    
UNS S30500 Austenitic Cr-Ni Stainless Steel 305 ASTM A167 (305), ASTM A240 (305), ASTM A249 (305), ASTM A276 (305),
  (Low Work Hardening)   ASTM A313 (305), ASTM A314 (305), ASTM A368 (305), ASTM A473 (305),
      ASTM A478 (305), ASTM A492 (305), ASTM A493 (305), ASTM A479 (305),
      ASTM A554 (305), ASTM A580 (305)
UNS S30600 Austenitic Cr-Ni Stainless Steel 18-15 ASTM A240, ASTM A269, ASTM A312, ASTM A358, ASTM A479
UNS S30800 Austenitic Cr-Ni Heat Resisting 308 ASTM A167 (308), ASTM A276 (308), ASTM A314 (308), ASTM A473 (308),
  Steel   ASTM A580 (308)
UNS S30815 Austenitic Cr-Ni Heat Resisting 253MA ASTM A276, ASTM A473, ASTM A479
  Steel    
UNS S30900 Austenitic Cr-Ni Heat Resisting 309 ASTM A167 (309), ASTM A249 (309), ASTM A276 (309), ASTM A312 (309),
  Steel   ASTM A314 (309), ASTM A358 (309), ASTM A403 (309), ASTM A409 (309),
      ASTM A473 (309), ASTM A511 (309), ASTM A554 (309), ASTM A580 (309),
UNS S30908 Austenitic Cr-Ni Heat Resisting 309 S ASTM A167 (309 S), ASTM A240 (309 S), ASTM A276 (309 S), ASTM A314
  Steel   (309 S), ASTM A473 (309 S), ASTM A511 (309 S), ASTM A554 (309 S)
      , ASTM A580 (309 S)
UNS S30909 Austenitic Cr-Ni Heat Resisting 309 H ASTM A312/ ASTM A312M
  Steel    
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