International Standard Comparative

UNS umbering Systems.

British Standards Institution :: Unified Numbering Systems for Metals and Alloys


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


Comparative Table

UNS Number K GROUP : Miscellaneous Steels and Ferrous Alloys - K93600~K95000
ASTM Brand/Trp
ASTM Equivalent
UNS K93600 Iron. Thermostat. Alloy(invar)   ASTM A538/ ASTM A538M(C), ASTM A579(73)
UNS K93601 Nickel Steel. 36% Ni   ASTM B388
UNS K93800 Iron. Thermostat. Alloy   ASTM A658
UNS K94000 Iron. Thermostat. Alloy   ASTM B388
UNS K94100 Iron. Nickel Sealing Alloy   ASTM B388
UNS K94101 ron. Nickel Sealing Alloy DUMET ASTM F29
UNS K94200 Iron. Thermostat. Alloy   ASTM B388
UNS K94500 Iron. Thermostat. Alloy   ASTM B388
UNS K94600 ron. Nickel Sealing Alloy   ASTM F30(46)
UNS K94610 ron. Nickel-Cobalt Sealing KOBAR ASTM F15
UNS K94760 Alloy Nicke-Chromium   ASTM F31
  Sealing Alloy    
UNS K94800 Iron. Nickel Sealing Alloy   ASTM F30(48)
UNS K95000 Iron. Nickel Thermostat. Alloy   ASTM B388
Register as a member of e-pipe Registration your Company Information.

Any more you don't have to wait Marketing Result.
Using our companies information management database - Open e'market. and Advertising,Operating activities.
With e-pipe, Make a New Business.