In general, swords are not designed to cut through solid steel. Most traditional swords, including katanas and European swords, are made primarily for cutting flesh, fabric, and other relatively soft materials. They are not intended to be used as tools for cutting through metal.

While swords can be incredibly sharp and effective against softer targets, such as human bodies or armor made of leather, cloth, or lighter metals, they are not typically designed to penetrate or sever solid steel. Attempting to cut through steel with a sword would likely result in damage to the blade, potentially causing it to chip, deform, or even break.

It's important to note that there are specialized tools designed for cutting through steel, such as industrial saws, torches, or abrasive cutting wheels. These tools utilize different mechanisms and techniques specifically engineered for cutting through metal.

However, it's worth mentioning that there have been historical instances of swords being used against armored opponents, such as plate armor. In these cases, techniques like half-swording, where the sword is gripped by the blade for more precise thrusting attacks, or using the sword pommel as a bludgeoning tool, were employed to target the weak points or vulnerable areas of the armor.

In summary, while swords are formidable weapons, they are not typically designed for cutting through solid steel. They are best suited for cutting softer materials and engaging in combat against opponents who are not heavily armored