Mr. Stuber, I do not know of any of the standards or specifications relative to this material, but I suggest that you contact either Bob Hall, Bellcore, or Dave Hillman, Rockwell. Bob is heading Bellcores efforts at looking at alternative metal finishes to replace HASL and has a wealth of industry knowledge (walking encyclopedia). Bob's phone number is: 908-758-2843. I don't know his E-Mail address. Dave Hillman is a metallurgist and is the chair for the J-STD-002 and 003 committees, as well as the vice-chair of the assembly and joining committee. Dave would be aware of the solderability aspects and of any solderability research done in the areas you suggest. Dave's phone is: 319-395-1615 and E-Mail is: [log in to unmask] If these two can't help you, you might contactEMPF in Indianapolis to see if they have done any studies. The EMPF home page is: http://www.engr.iupui.edu/empf Good Luck. Doug Pauls [log in to unmask]