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 - K11646~K12238
UNS No
Description
ASTM Brand/Trp
ASTM Equivalent
UNS K11646 Alloy Steel   ASTM A514 (h), ASTM A514 (H)
UNS K11662 Alloy Steel   ASTM A514 (D), ASTM A517 (D)
UNS K11682 Alloy Steel   ASTM A514 (L), ASTM A517 (L)
UNS K11683 Alloy Steel   ASTM A514 (M), ASTM A517 (M)
UNS K11695 Alloy Steel   ASTM A592 (E)
UNS K11711 Leaded-Resulfurized Steel   ASTM A766
UNS K11720 High-Strenght Low-Alloy Steel   ASTM A734 / ASTM A734M (B)
UNS K11742 Alloy Steel   ASTM A202 (ASTM A)
UNS K11757 Alloy Steel   ASTM A387 / ASTM A387M (12)
UNS K11789 Alloy Steel   ASTM A387 / ASTM A387M (11)
UNS K11797 Alloy Steel   ASTM A739 (B11)
       
UNS K11800 Alloy Steel   ASTM A541 (4)
UNS K11803 Alloy Steel   ASTM A225 / ASTM A225M
UNS K11804 Alloy Steel   ASTM A651 (I)
UNS K11820 Alloy Steel   ASTM A204 / ASTM A255M (A)
UNS K11831 High-Strenght Low-Alloy Steel   ASTM A724 / ASTM A724M (A)
UNS K11835 Alloy Steel   ASTM A714 (VI)
       
UNS K11846 High-Strenght Low-Alloy Steel   ASTM A131 (ASTM AH32, DH32, EH32)
UNS K11847 Alloy Steel   ASTM A514 (N)
UNS K11852 High-Strenght Low-Alloy Steel   ASTM A131 (ASTM AH36, DH36, EH36)
UNS K11856 Alloy Steel   ASTM A514 (ASTM A), ASTM A517 (ASTM A), ASTM A592 (ASTM A)
UNS K11872 Alloy Steel   ASTM A514 (G), ASTM A517 (G)
UNS K11900 Alloy Steel   ASTM A325 (2)
       
UNS K12000 High-Strenght Low-Alloy Steel   ASTM A633 (C)
UNS K12001 High-Strenght Low-Alloy Steel   ASTM A737 / ASTM A737M (B)
UNS K12003 Alloy Steel   ASTM A225 / ASTM A225M
UNS K12010 High-Strenght Low-Alloy Steel   ASTM A242 (2)
UNS K12020 Alloy Steel   ASTM A204 / ASTM A204M (B)
UNS K12021 Alloy Steel   ASTM A302 / ASTM A302M (A)
UNS K12022 Alloy Steel   ASTM A302 (B)
UNS K12023 Alloy Steel   ASTM A209 (TlA)
       
UNS K12031 High-Strenght Low-Alloy Steel   ASTM A724 / ASTM A724M (B)
UNS K12032 Alloy Steel   ASTM A588 (H)
UNS K12033 Alloy Steel   ASTM A325 (C), ASTM A563 (C3C)
UNS K12037 High-Strenght Low-Alloy Steel   ASTM A633 (D)
UNS K12039 Alloy Steel   ASTM A302 / ASTM A302M (C)
UNS K12040 Alloy Steel   ASTM A588 G
UNS K12042 Alloy Steel   ASTM A508 (3 ASTM And 3ASTM A)
UNS K12043 Alloy Steel   ASTM A508 (B)
UNS K12044 Alloy Steel   ASTM A508 (J)
UNS K12045 Alloy Steel   ASTM A541 (3 ASTM And 3ASTM A)
       
UNS K12047 Alloy Steel   ASTM A213 (T17)
UNS K12054 Alloy Steel   ASTM A302 / ASTM A302M (D)
UNS K12059 Alloy Steel   ASTM A325 (D), ASTM A563 (C3D)
UNS K12062 Alloy Steel   ASTM A234 (WP12)
UNS K12089 Alloy Steel   ASTM A707 (L4)
UNS K12121 Alloy Steel   ASTM A692
UNS K12122 Alloy Steel   ASTM A182 (F2)
UNS K12143 Alloy Steel   ASTM A387 / ASTM A387M (2)
       
UNS K12202 Alloy Steel   ASTM A633 (E), ASTM A737 (C)
UNS K12211 Alloy Steel   ASTM A441
UNS K12238 Alloy Steel   ASTM A325 (F), ASTM A563 (C3F)
       
       
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