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 : Miscellaneous Steels and Ferrous Alloys - K03046~K07000
UNS No
Description
ASTM Brand/Trp
ASTM Equivalent
UNS K03046 Carbon Steel ASTM A765 (I)
UNS K03047 Carbon Steel ASTM A765 (II)
UNS K03100 Carbon Steel ASTM A31 (B)
UNS K03101 Carbon Steel ASTM A515/ ASTM A515M (70)
UNS K03102 Carbon Steel ASTM A414 (F)
UNS K03103 Carbon Steel ASTM A414 (G)
UNS K03104 Carbon Steel ASTM A574
UNS K03200 Carbon Steel ASTM A695 (B, C)
UNS K03300 Carbon Steel ASTM A455 (I)
UNS K03301 Carbon Steel ASTM A707 (L2)
UNS K03501 Carbon Steel ASTM A106 (C), ASTM A210 (C), 234 (WPC)
UNS K03502 Carbon Steel ASTM A181
UNS K03503 Carbon Steel ASTM A178 (C)
UNS K03504 Carbon Steel ASTM A105, ASTM A695 (B)
UNS K03505 Carbon Steel ASTM A557 (C2)
UNS K03506 Carbon Steel ASTM A266 (1, 2), ASTM A541 (1)
UNS K03700 Carbon Steel ASTM A413
UNS K03800 Carbon Steel ASTM A563 (DH)
UNS K03900 Carbon Steel ASTM A490
UNS K04000 Carbon Steel ASTM A290 (A A, B)
UNS K04001 Carbon Steel ASTM A372 (2)
UNS K04002 Carbon Steel ASTM A194 (2, 2HM, 2H)
UNS K04100 Carbon Steel ASTM A354
UNS K04200 Carbon Steel ASTM A449
UNS K04500 Carbon Steel ASTM A290 (C, D)
UNS K04700 Carbon Steel ASTM A21 (U), ASTM A383, ASTM A730 (C, D, E)
UNS K04701 Carbon Steel ASTM A49
UNS K04800 Carbon Steel ASTM A489
UNS K03801 Carbon Steel ASTM A372 (3)
UNS K05000 Carbon Steel ASTM A291 (2)
UNS K05001 Carbon Steel ASTM A266 (3), ASTM A649 (2)
UNS K05002 Carbon Steel ASTM A288 (I)
UNS K05200 Carbon Steel ASTM A21 (F), ASTM A649 (2)
UNS K05500 Carbon Steel ASTM A291 (I)
UNS K05501 Carbon Steel ASTM A321
UNS K05700 Carbon Steel ASTM A25 (A), ASTM A504 (A), ASTM A583 (A), ASTM A631 (A)
UNS K05701 Carbon Steel ASTM A551 (A,AHT)
UNS K03801 Carbon Steel ASTM A563 (D)
UNS K05802 Carbon Steel ASTM A563 (O, A, B, C)
UNS K06000 Carbon Steel ASTM A648 (I)
UNS K06001 Carbon Steel ASTM A729
UNS K06002 Carbon Steel ASTM A67 (2)
UNS K06100 Carbon Steel ASTM A1 (61-80)
UNS K06020 Carbon Steel ASTM A25 (B), ASTM A504 (B), ASTM A583 (B), ASTM A631 (B)
UNS K06201 Carbon Steel ASTM A417
UNS K06501 Carbon Steel ASTM A227
UNS K06700 Carbon Steel ASTM A648 (II)
UNS K06701 Carbon Steel ASTM A230
UNS K06702 Carbon Steel ASTM A551 (B, BHT)
UNS K06703 Carbon Steel ASTM A2 (A A)
UNS K07000 Carbon Steel ASTM A1 (81-90)
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