It is the principle strengthening element in carbon steels and low-alloy steels. Atomic number 6, atomic weight 12.01115. Manganese (Mn): Manganese is a brittle, metallic element that exists in ...

However, this expansion can be a real problem for many technologies like precision instruments or spacecraft. That’s why scientists have been searching for a material that maintains a constant size ...

The FAA has issued the final rule for the controversial rudder replacement airworthiness directive for Piper Aircraft. Over ...