The choice of the best metal for making a sword depends on various factors, including the intended use of the sword, desired characteristics, and personal preferences. Different metals offer different properties that can influence the performance of the sword. Here are some commonly used metals for swordmaking:

1. High Carbon Steel: High carbon steel, such as 1095 or 5160, is a popular choice for sword blades. It offers excellent hardness, edge retention, and cutting performance. High carbon steel swords can be heat-treated to achieve high levels of hardness and sharpness.
2. Tool Steel: Various types of tool steels, such as O1, W2, or S7, are used for swordmaking. Tool steels are known for their toughness, wear resistance, and ability to withstand heavy use. They can be well-suited for swords that need to endure demanding cutting tasks or impacts.
3. Stainless Steel: Stainless steels offer good resistance to rust and corrosion, making them easier to maintain. However, stainless steels generally have lower hardness and edge retention compared to high carbon steels. Stainless steel swords can still perform well for certain applications, such as decorative or ceremonial purposes.
4. Damascus Steel: Damascus steel, often created through layering and forging different steel alloys, is prized for its unique patterns and aesthetics. While the specific performance of Damascus steel can vary depending on the construction and alloys used, well-made Damascus steel can offer good hardness, sharpness, and durability.
5. Other Alloy Steels: Various alloy steels, such as 5160, L6, or 9260, can be suitable for sword blades. These steels may offer a balance of desirable properties, including toughness, hardness, and edge retention.

It's important to note that the performance of a sword is not solely determined by the type of metal used. Factors such as heat treatment, blade geometry, design, and overall craftsmanship also play significant roles in the sword's performance. Consulting with experienced swordsmiths or reputable manufacturers can provide valuable insights and guidance based on your specific needs and preferences.