ASTM WK30879

    Work Item: ASTM WK30879 - Revision of B265 - 10 Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate

    (What is a Work Item?)

    Active Standard: B265 - 13ae1

    Developed by Subcommittee: B10.01 | Committee B10 | Contact Staff Manager



    1. Rationale

    Our request is that in ASTM B265-10, in the definition of plate, the size range be extended up to 3.71mm in thickness. Specifically, it is requested that in section 3. Terminology, the lower limit of thickness should be changed from 0.187 in. (4.76mm) to 0.146 in. (3.71mm), and that in TABLE 13, 0.187(4.76)to0.375(9.52), excl. should be changed to 0.146(3.71)to0.375(9.52), excl. We ask this because while plate is ordinarily manufactured on a plate mill, with the plate mill, it is difficult to secure the accuracy of thickness, as compared with the case of a strip mill. This leads to a situation in which we are now unable to manufacture plate products having thicknesses to which the prescribed tolerances for strip-mill-manufactured sheet are applicable. For this reason, we considered it desirable and necessary to set appropriate tolerances for plate to make it possible for plate to be manufactured to fitting tolerances. To this end, we thought that an extension of the thickness range in TABLE 13 might be an appropriate step. May we add that we are making this request by pressing demands of our customers for plate manufactured to the thickness accuracy of levels of TABLE 13.


    Keywords

    plate; sheet; strip; titanium; titanium alloys; Palladium (titanium plus palladium)--specifications; Titanium plus palladium--specifications; Titanium (Ti)/alloys--specifications; UNS R50250 (Ti, unalloyed); UNS R50400 (Ti, unalloyed); UNS R50550 (Ti, unalloyed); UNS R50700 (Ti, unalloyed); UNS R52250 (Ti, low-alloyed); UNS R52400 (Ti, low-alloyed); UNS R53400 (Ti alloy); UNS R56400 (Ti alloy); UNS R58030 (Ti alloy);
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    11-06-2010

    Technical Contact:
    Motomi Masaki

    Item:
    001

    Ballot:
    B10.01 (14-01)

    Status:
    Negative Votes Need Resolution