Automakers contemplating whether a part is cold stamped or hot formed must consider numerous ramifications impacting multiple departments. Here, we'll focus on grade options and corrosion protection.| AHSS Guidelines
Steel, and specifically advanced high strength steel, satisfies automotive industry requirements for safety, emissions, fuel efficiency, manufacturability, durability, and affordability. Affordability The automotive industry has adopted light-weighting as a key part of their greenhouse gas reduction strategy. This strategy, however, must be executed in an affordable manner. Key reasons to deploy advanced high strength steels […]| AHSS Guidelines
We have much more information on 3rd Gen steels here in the Guidelines.| AHSS Guidelines
Martensitic steel grades provide a cold formed alternative to hot formed press hardening steels. Not all product shapes can be cold formed. For those shapes where forming at ambient temperatures is possible, design and process strategies must address the springback which comes with the high strength levels, as well as eliminate the risk of delayed fracture.| AHSS Guidelines
Metal stampers and die shops experienced with mild and HSLA steels often have problems making parts from AHSS grades. The higher initial yield strengths and increased work hardening of these steels can require as much as four times the working loads of mild steel.| AHSS Guidelines
Metallurgists use words that have precise meanings in our daily discussions, and we forget that many people we work with don’t have exposure to the terminology that we are accustomed to using. What follows is a brief tour of the words and phrases you are likely to hear when speaking with your metallurgical representative.| AHSS Guidelines
Roll Forming takes a flat sheet or strip and feeds it longitudinally through a mill containing several successive paired roller dies, each of which incrementally bend the strip into the desired final shape. The incremental approach can minimize strain localization and compensate for springback.| AHSS Guidelines
Springback correction can take many forms. The first approach is to apply an additional process that changes the elastic stresses to a less damaging form. One example is a post-stretch operation that reduces sidewall curl by changing the tensile-to-compressive elastic stress gradient through the thickness of the sidewall to all tensile elastic stresses though the thickness.| AHSS Guidelines
Roll forming is no longer limited to producing simple circular, oval, or rectangular profiles. Advanced cross sections highlight some profile designs that aid in body structure stiffness and packaging space reductions.| AHSS Guidelines
