Yes, T10 is generally considered a good sword steel. T10 is a high-carbon tool steel that is known for its excellent toughness, hardness, and edge retention. It is often used in the production of high-quality swords and other bladed weapons.

T10 steel is known for its ability to hold a sharp edge and withstand heavy use without chipping or deforming. It has good wear resistance, which means it can retain its sharpness even after multiple cutting or striking tasks.

However, it's worth noting that the quality and performance of a sword depend on various factors beyond just the choice of steel. The heat treatment, blade geometry, construction techniques, and overall craftsmanship also play crucial roles in determining the quality and performance of a sword.

If you are considering purchasing a sword made from T10 steel, it is important to choose one from a reputable and skilled swordsmith or manufacturer. Quality control, proper heat treatment, and attention to detail are key factors in producing a well-crafted sword that showcases the desirable characteristics of T10 steel.