留学美国的同学，套磁信是必不可少的一部分。不管是留学美国研究生套磁还是博士套磁，其实质都是一样的，所以博士套磁信模板的基本样式思路跟研究生的差别不大，将内容结合自己的情况稍加改动即可。不过模板仅仅是模板，需要让自己的文章活起来，有生机需要加入自己的创作。下面是一个套磁模板，大家借鉴一下：

　　Dear professor,

　　I am one of your PHD candidates for fall 2007 admission. My application materials have already reached Materials Science and Engineering(根据具体学校替换) department. My NR Number is 060001150 and my order ID is: CLEMSONG_MAXUNWEI_20061102221804.

　　Maybe you have already found many excellent prospective graduate students but I am very confident that I will be one of the qualified andidate among them.

　　During my college study in South China University of Technology, I entered the Polymer world for the first time in my life. I have learned the polymer knowledge and made many researches. From it I get to know how to find the reason of problem by using the advanced facilities and academic guidelines. I became more independent and active during solving problems. The most important of all, I was deeply attracted by this field and consider it my future career goal.

　　Then I entered the T&T Group as a research engineer. T&T group is a big scrap recycling company, his head office in Texas States in USA, with some factories in China. When I worked in T&T group, I contacted all kinds of polymer materials, such as plastics, rubber, additives, resins and so on. Maybe I am not familiar with all materials property, but at least I know their application. When we want to develop a new material or select right materials for certain application, my experience can help.

　　Now as a processing engineering in China Battenfeld, not only do I get more knowledge about materials processing, but also know abundant knowledge in plastic mechanical engineering. I participated in the design of some polymer processing equipments including plastics extrusion equipment and different kind of screws. My direct boss is a German and we always communicate technical information together. He also encourages me to contact with famous materials suppliers, such as Huntsman, Dow, SK, and Degussa. From this kindly cooperation, I get many useful materials processing data and good friends.

　　The Department of Macromolecular Science and Engineering offers our students unique training participating in groundbreaking research encompassing the synthesis, processing, theoretical and computer modeling and structure-property relationships of polymeric materials, as well as the opportunity to participate in up-to-date research projects. Therefore I consider PHD program at Case Western Reserve University my first and best choice. (书写美国 套磁时注意不同学校专业和校名的改动。)

　　Keeping improve is my life goal. I really want to pursue my PHD degree in the Department of Macromolecular Science and Engineering at Case Western Reserve University. If possible, I really hope you can give me a telephone interview.

　　Thank you very much for considering my application and I am looking forward to hearing form you soon.

　　Sincerely yours,

　　*******