通常是ROHS4项和ROHS6项金属材料只测四项(铅,镉,汞,六价铬),非金属材料需要测六项。楼主,一个客户在问这个问题,我今天也在查这个资料,现在找到了,你千万被被下面那帮人给糊弄了,正确解答如下:RoHS6(6/6),是指该材料中,RoHS管制的6种有害物质全部都符合要求(低于限量)。RoHS5 (5/6),是指该材料中,铅含量高于1000ppm但是符合豁免条款,除铅以外的其他5种有害物质都符合要求(低于限量)。我也在找这个问题的答案。把弄到的资料和你分享下吧~rohs-5product does not contain cadmium (cd), mercury (hg), hexavalent chromium (hex-cr), polybrominated biphenyls (pbb), polybrominated diphenyl ethers(pbdeproduct contains lead in applications considered as solders including platingfinish for component terminations, solder paste, solder balls, solder bumps, pcbfinish, and solder columnsmaximum reflow temperature is 235°crohs-6 product does not contain cadmium (cd), mercury (hg), hexavalent chromium (hex-cr), polybrominated biphenyls (pbb), polybrominated diphenyl ethers (pbde some internal connections may contain lead used in high meltingtemperature solder (solder alloys containing more than 85% leadplating finish on component terminations is lead-free.maximum reflow temperature is 245°c.