The Unified Numbering System - UNS - was developed by ASTM and SAE to correlate different numbering systems for commercial metals and alloys.
The UNS number is not a specification - it is an identification number for a metal or alloy specified elsewhere. The UNS numbering categories are
|A00001 to A99999 2)||Aluminum and aluminum alloys|
|C00001 to C99999 2)||Copper and copper alloys|
|D00001 to D99999 1)||Specified mechanical property steels|
|E00001 to E99999 2)||Rare earth and rare earthlike metals and alloys|
|F00001 to F99999 1)||Cast irons|
|G00001 to G99999 1)||AISI and SAE carbon and alloy steels (except tool steels)|
|H00001 to H99999 1)||AISI and SAE H-steels|
|J00001 to J99999||Cast steels (except tool steels)|
|K00001 to K99999 1)||Miscellaneous steels and ferrous alloys|
|L00001 to L99999 2)||Low-melting metals and alloys|
|M00001 to M99999 2)||Miscellaneous nonferrous metals and alloys|
|N00001 to N99999 2)||Nickel and nickel alloys|
|P00001 to P99999 2)||Precious metals and alloys|
|R00001 to R99999 2)||Reactive and refractory metals and alloys|
|S00001 to S99999 1)||Heat and corrosion resistant (stainless) steels|
|T00001 to T99999 1)||Tool steels, wrought and cast|
|W00001 to W99999||Welding filler metals|
|Z00001 to Z99999|| |
Zinc and zinc alloys
- Ferrous metals and alloys
- Nonferrous metals and alloys
Material properties of gases, fluids and solids - densities, specific heats, viscosities and more.
Thermal diffusivity, specific heat capacity, density and thermal conductivity of stainless steel AISI 310 vs. temperature.
An overview of the American Society of Mechanical Engineers - ASME - valve standards.
An overview of ASTM International - American Society for Testing and Materials - valve standards.
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Stainless steels are commonly grouped into martensitic stainless steels, ferritic stainless steels, austenitic stainless steels, duplex (ferritic-austenitic) stainless steels, and precipitation-hardening stainless steels.
Applied threaded standards used for piping connections.