DESIGN WINDOW FOR DESIGN WINDOW FOR TUNGSTEN ALLOYS TUNGSTEN ALLOYS S. S. Sharafat Sharafat , R. Martinez , R. Martinez N. M. N. M. Ghoniem Ghoniem The University of California at Los Angeles (UCLA) The University of California at Los Angeles (UCLA) Los Angeles, CA. 90095-1597, USA Los Angeles, CA. 90095-1597, USA APEX STUDY GROUP MEETING PPPL May 12-14, 1999