2013 Honda Accord body structure is made of >55% high strength steel with tensile strengths starting at 440MPa. Of this, >17% is ultra high strength steel, with tensile strengths of 780MPa, 980MPa, and a martensitic grade 1500MPa. This 2013 model represents the first use of UHSS in the Accord lineup. In addition, the subframe has steel and aluminum components that are joined via friction stir welding.

http://www.honda.com/newsandviews/article.aspx?id=6825-en
http://www.autofieldguide.com/articles/honda-accord-the-ninth-generation#

-Danny Schaeffler
Engineering Quality Solutions, Inc. 4M Partners, LLC
http://www.EQSgroup.com http://www.Learning4M.com