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HSS properties and weldability? 


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High strength steels (HSS) have been developed to provide high strength, excellent toughness, and good weldability. However, the application of HSS is sometimes restricted due to various reasons, including lack of design and fabrication knowledge, as well as issues related to weldability and heat treatment . Welding HSS sheets using resistance spot welding technologies has been investigated to ensure high reliability in welded joints of automobile components. Factors such as welding current range, Vickers hardness, tensile shear strength, cross tension strength, and fatigue strength have been studied, with nugget diameter, sheet thickness, and base steel strength found to have significant effects on the mechanical properties of the welded joints . In the context of longitudinal branch plate-to-HSS member connections, stiffening plates or structural tees are sometimes welded to reduce flexibility. Experimental and numerical studies have been conducted to determine the minimum required stiffening plate thickness for a proposed connection design procedure .

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The paper discusses the weldability of advanced high-strength steels (AHSS) and their mechanical behavior. It does not specifically mention the properties of AHSS or their weldability.
The paper discusses the development of high strength steels with excellent toughness and good weldability. It mentions that the application of these steels may be restricted due to various reasons.
The paper discusses the resistance spot weldability of high strength steel (HSS) sheets for automobiles, including the effect of sheet thickness, base steel strength, and carbon content on the weld strength.
The provided paper does not discuss the properties and weldability of HSS (High-Speed Steel).

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