UNS Numbering System
UNS Numbering System for Metals and AlloysASTM E527 - Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS) UNS - Unified Numbering System | |
|---|---|
| Numbering | Metal |
| A00001 to A99999 | aluminum and aluminum alloys |
| C00001 to C99999 | copper and copper alloys |
| D00001 to D99999 | specific mechanical property steels |
| E00001 to E99999 | rare earth and rare earthlike metals and alloys |
| F00001 to F99999 | cast irons |
| G00001 to G99999 | AISI and SAE carbon and alloy steels (except tool steels) |
| H00001 to H99999 | AISI and SAE H-steels |
| J00001 to J99999 | cast steels (except tool steels) |
| K00001 to K99999 | miscellaneous steels and ferrous alloys |
| L00001 to L99999 | low melting metals and alloys |
| M00001 to M99999 | miscellaneous non-ferrous metals and alloys |
| N00001 to N99999 | nickel and nickel alloys |
| P00001 to P99999 | precious metals and alloys |
| R00001 to R99999 | reactive and refractory metals and alloys |
| S00001 to S99999 | heat and corrosion resistant (stainless) steels |
| T00001 to T99999 | tool steels and wrought and cast |
| W00001 to W99999 | welding filler metals |
| Z00001 to Z99999 | zinc alloys |
Ferrous Metals and Alloys | |
|---|---|
| Numbering | Metal |
| D00001 to D99999 | specific mechanical property steels |
| F00001 to F99999 | cast irons |
| G00001 to G99999 | AISI and SAE carbon and alloy steels (except tool steels) |
| H00001 to H99999 | AISI and SAE H-steels |
| J00001 to J99999 | cast steels (except tool steels) |
| K00001 to K99999 | miscellaneous steels and ferrous alloys |
| S00001 to S99999 | heat and corrosion resistant (stainless) steels |
| T00001 to T99999 | tool steels and wrought and cast |
Non-ferrous Metals and Alloys | |
|---|---|
| Numbering | Metal |
| A00001 to A99999 | aluminum and aluminum alloys |
| C00001 to C99999 | copper and copper alloys |
| E00001 to E99999 | rare earth and rare earthlike metals and alloys |
| L00001 to L99999 | low melting metals and alloys |
| M00001 to M99999 | miscellaneous non-ferrous metals and alloys |
| N00001 to N99999 | nickel and nickel alloys |
| P00001 to P99999 | precious metals and alloys |
| R00001 to R99999 | reactive and refractory metals and alloys |
| Z00001 to Z99999 | zinc alloys |
Specialized Metals and Alloys | |
|---|---|
| Numbering | Metal |
| W00001 to W99999 | welding filler metals |