Unified Numbering System for Low Melting Metals and Alloys

Jul 1 2012

American Society for Testing and Materials (ASTM) and Society of Automotive Engineers (SAE) have together been responsible for the development of the Unified Numbering System that is referred to as an identification number for alloys and metals. The UNS enables correlating many different numbering systems for commercial alloys and metals.

The following table has a list of 14 low-melting metals and alloys with their UNS numbering system from ranging L00001–L99999.

UNS Designations
Low-Melting Metals and Alloys
L00001–L00999 Bismuth
L01001–L01999 Cadmium
L02001–L02999 Cesium
L03001–L03999 Gallium
L04001–L04999 Indium
L06001–L06999 Lithium
L07001–L07999 Mercury
L08001–L08999 Potassium
L09001–L09999 Rubidium
L10001–L10999 Selenium
L11001–L11999 Sodium
L12001–L12999 Thallium
L13001–L13999 Tin
L50001–L59999 Lead

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