The main difference between a straight steak knife and a serrated steak knife is the blade. The straight blade is designed for slicing through tender cuts of meat while maintaining the meat's texture and appearance. On the other hand, a serrated blade is ideal for cutting through tougher cuts of meat. For more information on the differences between serrated and non-serrated knives, you can check out this article [link to new serrated vs non-serrated knives blog].