Once the chromoly substructure was complete I sent it to Certified Steel Treating. Certified makes its living by changing the strengths of metal. I had two steps done to these pieces. First they were stress relieved and then hardened. Whenever welding is done to metal it can leave stress in the metals around the heat-affected zone of the weld. By going through a heating process known as normalizing, stress is relieved to help reduce the chance of cracks forming in the material.