Revision of B907-09 Standard Specification for Zinc, Tin and Cadmium Base Alloys Used as Solders
The UNS (Uniform Numbering System) requires that each specific metal grade or alloy composition receive a unique UNS number. New composition specifications were previously added to this standard. New UNS numbers are underlined in red in Table 1.
A Work Item (WK) is a proposed new standard or a revision to an existing standard that is under
development by a committee.
ASTM offers descriptions of work items in the interest of openness, as well as to solicit input from
interested stakeholders who may not be members of ASTM. If you would like more information about a
specific work item or to participate in the development of a work item, click the Staff Manager link
provided on the work item description page.
Work Item Lifespan
Once a Work Item is approved through the balloting process and published, it will remain on the
website for an additional 6 months for tracking purposes.
To delete a work item which is no longer necessary, please contact the appropriate staff manager or
administrative assistant. The only way to remove an active Work Item is to contact staff.
A collaboration area will be removed from the website once the work item it is associated with is