There are different ways to classify automotive steels. One is a metallurgical designation providing some process information. Common designations include lower-strength steels (interstitial-free and mild steels); conventional high strength steels, such as bake hardenable and high-strength, low-alloy steels (HSLA); and Advanced High-Strength Steels (AHSS) such as dual phase and transformation-induced plasticity steels. Additional higher strength steels include press hardening steels and steel...| AHSS Guidelines
Tensile property characterization of mild and high strength low alloy steel (HSLA) traditionally was tested only in the rolling direction and included only yield strength, tensile strength, and total elongation.| AHSS Guidelines
Steels with a fully martensitic microstructure are associated with the highest tensile strength – grades with a tensile strength of 2000 MPa is commercially available, and higher strength levels are under development.| AHSS Guidelines
During a tensile test, the elongating sample leads to a reduction in the cross-sectional width and thickness. The shape of the engineering stress-strain curve showing a peak at the load maximum (Figure 1) results from the balance of the work hardening| AHSS Guidelines
We have much more information on 3rd Gen steels here in the Guidelines.| 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
The Resistance Spot Welding (RSW) process is often used as a model to explain the fundamental concepts behind most resistance welding processes. If the sheets are steel, the resistance to the flow of current of the sheets will be much higher than the copper electrodes, so the steel will get hot while the electrodes remain relatively cool.| AHSS Guidelines
Resistance welding processes represent a family of industrial welding processes that produce the heat required for welding through what is known as joule (J = I Rt) heating.| AHSS Guidelines
Car body-in-white (BIW) structures, such as pillars and rails, are increasingly made of complex stack-ups of advanced high-strength steels (AHSS) for vehicle lightweighting to achieve improved fuel efficiency and crashworthiness. Complex stack-ups comprise more than two sheets with similar/dissimilar steels and nonequal sheet thickness.| AHSS Guidelines
M-68. Munro Live – Munro and Associates. (2023, May 19). This is NOT Lean Design: Hummer EV Battery Pack Breakdown. Related Posts Filter by Post type Post Page Category Citations homepage-featured-top main-blog Blog Production Managers Tool & Die Professionals Steel Grades AHSS 1stGen AHSS 3rdGen AHSS 2ndGen AHSS Metallurgy Lower Strength Steels Conventional HSS Sort […]| AHSS Guidelines
There is an increased need to join magnesium alloys to high-strength steels using resistance spot selding to create multi-material lightweight body structures for fuel-efficient vehicles.| AHSS Guidelines
H-66. G.T. Halmos (Editor) Roll Forming Handbook (1st ed.). CRC Press, 2005. doi.org/10.1201/9781420030693. Related Posts Filter by Post type Post Page Category homepage-featured-top main-blog Blog Production Managers Tool & Die Professionals Steel Grades AHSS 1stGen AHSS 3rdGen AHSS 2ndGen AHSS Metallurgy Lower Strength Steels Conventional HSS Roll Forming Sort by Title Relevance Cold Stamped or […]| AHSS Guidelines
Urbanization and waning interest in vehicle ownership point to new transport opportunities in megacities around the world. Mobility as a Service (MaaS) – characterized by autonomous, ride-sharing-friendly EVs – can be the comfortable, economical, sustainable transport solution of choice thanks to the benefits that today’s steel offers. The WorldAutoSteel organization is working on the Steel […]| 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