International Standard Comparative

BSI No. :: UNS No.

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


BSI Group, also known in its home market as the British Standards Institution (or BSI), is a multinational business services provider whose principal activity is the production of standards and the supply of standards-related services. BSI produces British Standards, and, as the UK’s National Standards Body, is also responsible for the UK publication, in English, of international and European standards. The Group now operates internationally in 150 countries.


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.

Comparative Table14


B/- Council for Building and Civil Engineering C/- Chemical and Health Council
E/- Engineering Council L/- British Electrotechnical Committee and Electrotechnical Council
M/- Multitechnics Council S/- Systems : Management And Environment T/- Disc
BS No.&title BS Grade UNS&etc Spec   BS No.&title BS Grade UNS&etc Spec
CB101 C51000 BS2874
CS101   CZ112  
SZ101 C22000 CZ114  
SZ102 C23000 CZ115  
SZ103 C24000 CZ116  
SZ106 C26000 CZ121Pb3  
SZ107 C27000 CZ121Pb4 C36000
SZ108   CZ122 ①B21-C46400
SZ119   CZ124 C36000
NS103 C74500 CZ128  
NS104   CZ129  
NS105   CZ130  
NS106 C75200 CZ131  
NS107 C77000 CZ132  
NS108   CZ133  
NS109   CZ134  
PB102   CZ135  
PB103   CZ136  
BS 2874
Spec. for copper and copper alloy rods and sections
C101 ①B187-C11000 CZ137  
C102 ①B187-C11000 NS101  
C103 ①B187-C10200 PB102  
C106 ①B187-C12000,12200 PB104  
C109   BS2875
Spec. for copper and copper alloys. Plate
C101 C11000
C111   C102  
C112   C103 C10200
C113   C104  
CA104   C105  
CA107   C106 C12000
CC101   C107  
CC102   C108  
CN102   CA102 C70600
CN107   CA105  
CS101   CA106  
CZ106 C26000    


⑤ BS ⑥ AFNOR ⑦ SS ⑧ Maker Brand

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.