The best metal for a barrel depends on the specific application and requirements. For example, stainless steel is often used for its corrosion resistance and durability, making it suitable for applications where the barrel is exposed to harsh environments or corrosive materials. However, other metals such as carbon steel or aluminum may be more suitable for different situations based on factors such as cost, weight and specific performance requirements. It’s important to consider the specific needs of your gun barrel and consult with a materials expert to determine the best metal for the job.

Molybdenum is generally not stronger than steel because molybdenum is often used as an alloying element in steel to enhance its strength, hardness, and corrosion resistance. When added to steel in appropriate amounts, molybdenum can significantly improve the mechanical properties of steel, making it more suitable for high-stress applications such as the production of high-strength steel alloys, including chromium-molybdenum steels.

Pure molybdenum is a refractory metal with a high melting point and excellent high-temperature strength, but it is typically used as an alloying element in steel to enhance its properties rather than on its own for structural applications. So while molybdenum itself is not stronger than steel, as an alloying element it can play a vital role in increasing the strength and properties of steel.

Gun barrels are typically made from various types of steel, including stainless steel, carbon steel, and alloy steel. These materials were chosen for their strength, durability, and ability to withstand the high pressures and temperatures generated during firearm shooting. Additionally, some barrels may be made from special steel alloys, such as chromoly steel, which offer increased strength and heat resistance. The specific type of steel used for a gun barrel depends on factors such as the intended use of the gun, the required performance characteristics, and the manufacturing process used by the gun manufacturer.