AHSS Insights

Information to educate on the use of Advanced High-Strength Steels

AHSS Strain Hardening and Gradients

AHSS Strain Hardening and Gradients

The mild steel currently being used for sheet metal stampings has higher n-values than High Strength Low Alloy Steel and Advanced High Strength Steel. The high n-value indicates that the material has a higher work hardening exponent making the steel much easier to...

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AHSS and Laser Welding

AHSS and Laser Welding

Laser welding is finding its way into more vehicle applications due to inherent weld strength, adaptability to complex weld geometries, and lower part distortion (Figure 1). Automotive applications use a variety of welding joint designs for laser welding in both lap...

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Arc Welding Procedures with AHSS

Arc Welding Procedures with AHSS

Arc welds are normally used for vehicle components where the loads are high, for example in shock towers and engine cradles. Conventional arc welding processes (GMAW, TIG, and plasma) can be used as effectively for AHSS as with mild steels. The same shielding gases...

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Resistance Spot Welding Automotive AHSS

Resistance Spot Welding Automotive AHSS

Contributed by Menachem Kimchi, Ohio State University Advance High-Strength Steels (AHSS) have been resistance welded in automotive production lines in the last few years. However, the high strength and hardness can be expected to affect spot weld failure modes during...

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AHSS Unique Mechanical Properties

AHSS Unique Mechanical Properties

For many years, steel producers and stamping plants have gathered the mechanical properties of sheet metal. Individuals recorded properties such as yield strength, n-value and R-value to name a few. As new materials are introduced into the stamping plants, new...

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Introduction

Introduction

With escalating concerns about human-induced greenhouse gases, global legislators have passed more stringent vehicle emissions regulations through 2020, while considering further, aggressive targets for the next ten years. Automakers are...

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