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 G GROUP : AISI and SAE Carbon and Alloy Steels - G45200~G51600
UNS No
Description
ASTM Brand/Trp
ASTM Equivalent
UNS G45200 Mo Alloy Steel   ASTM A519 (4520)
UNS G46150 Alloy Steel   ASTM A29 (4615), ASTM A322 (4615), 331 (4615),
      ASTM A505 (4615)
UNS G46170 Mo Alloy Steel   ASTM A519 (4017)
UNS G46200 Ni-Mo Alloy Steel   ASTM A29 (4620), ASTM A322 (4620), 331 (4620),
      ASTM A505 (4620), ASTM A535 (4620)
UNS G46210 Ni-Mo Alloy Steel   ASTM A322 (4621), ASTM A331 (4621)
UNS G46260 Ni-Mo Alloy Steel   ASTM A29 (4626), ASTM A322 (4626), ASTM A331 (4626)
UNS G47180 Ni-Cr-Mo Alloy Steel   ASTM A29 (4718), ASTM A322 (4718), ASTM A331 (4718),
      ASTM A505 (4718)
UNS G47200 Ni-Cr-Mo Alloy Steel   ASTM A29 (4720), ASTM A322 (4720), ASTM A331 (4720),
      ASTM A519 (4720), ASTM A535 (4720), ASTM A711
UNS G48150 Ni-Cr-Mo Alloy Steel   ASTM A29 (4815), ASTM A322 (4815), ASTM A331 (4815),
      ASTM A505 (4815)
UNS G48170 Ni-Mo Alloy Steel   ASTM A29 (4817), ASTM A322 (4817), ASTM A331 (4817)
      ASTM A519 (4817)
UNS G48200 Ni-Mo Alloy Steel   ASTM A29 (4820), ASTM A322 (4820), ASTM A331 (4820),
      ASTM A505 (4820), ASTM A519 (4820), ASTM A535 (4820),
UNS G50150 Cr Alloy Steel   ASTM A29 (5015), ASTM A321 (5015), ASTM A331 (5015),
      ASTM A505 (5015), ASTM A519 (5015)
UNS G50401 Cr-B Alloy Steel   ASTM A519 (50B40)
UNS G50441 Cr-B Alloy Steel   ASTM A322 (50B44), ASTM A331 (50B44),
      ASTM A519 (50B44)
UNS G50460 Cr Alloy Steel   ASTM A29 (5046), ASTM A519 (5046)
UNS G50461 Cr Alloy Steel   ASTM A322 (50B46), ASTM A331 (50B46),
      ASTM A519 (50B46)
UNS G50501 Cr Alloy Steel   ASTM A322 (50B50), ASTM A331 (50B50),
      ASTM A519 (50B50)
UNS G50601 Cr-B Alloy Steel   ASTM A29 (50B60), ASTM A295 (50B60),
      ASTM A519 (50B60)
UNS G50986 Cr Alloy Steel   ASTM A322 (E50100), ASTM A331 (50100),
      ASTM A519 (E50100)
UNS G51150 Cr Alloy Steel   ASTM A29 (5115), ASTM A519 (5115)
UNS G51170 Cr Alloy Steel   ASTM A322 (5117), ASTM A331 (5117)
UNS G51200 Cr Alloy Steel   ASTM A29 (5120), ASTM A322 (5120), ASTM A331 (5120),
      519 (5120)
UNS G51300 Cr Alloy Steel   ASTM A29 (5130), ASTM A322 (5130), ASTM A331 (5130)
UNS G51320 Cr Alloy Steel   ASTM A29 (5132), ASTM A322 (5132), ASTM A331 (5132),
      ASTM A505 (5132), ASTM A519 (5132)
UNS G51350 Cr Alloy Steel   ASTM A29 (5135), ASTM A322 (5135), ASTM A331 (5135),
      519 (5135)
UNS G51400 Cr Alloy Steel   ASTM A29 (5140), ASTM A322 (5140), ASTM A331 (5140),
      ASTM A505 (5140), ASTM A519 (5140)
UNS G51450 Cr Alloy Steel   ASTM A29 (5145), ASTM A322 (5145), ASTM A331 (5145),
      ASTM A505 (5145), ASTM A519 (5145)
UNS G51470 Cr Alloy Steel   ASTM A29 (5147), ASTM A322 (5147), ASTM A331 (5147),
      ASTM A505 (5147), ASTM A519 (5147)
UNS G51500 Cr Alloy Steel   ASTM A29 (5150), ASTM A322 (5150), ASTM A331 (5150),
      ASTM A505 (5150), ASTM A519 (5150),
UNS G51550 Cr Alloy Steel   ASTM A29 (5155), ASTM A322 (5155), ASTM A331 (5155),
      ASTM A519 (5155)
UNS G51600 Cr Alloy Steel   ASTM A29 (5160), ASTM A322 (5160), ASTM A331 (5160),
      ASTM A505 (5160), ASTM A519 (5160)
       
       
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