B148 − 97(Reapproved 2009) Standard Speci f i cation for Aluminum-Bronze Sand Castings This standard is issued under the fi xed designation B148; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision....
: Designation: B777 − 07StandardSpecif i cation forTungsten Base, High-Density Metal 1This standard is issued under the f i xed designation B777; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. ...