Alloy steel sheet 4130 is a type of high-strength, low-alloy steel that contains chromium and molybdenum. It is commonly used in applications such as aircraft parts, oil and gas drilling equipment, and structural components.

The 4130 alloy steel sheet is known for its excellent weldability, toughness, and high tensile strength. It can also be heat treated to increase its strength and hardness. The sheet is available in various thicknesses and can be supplied in a range of conditions such as annealed, normalized, or hardened and tempered.

When purchasing alloy steel sheet 4130, it is important to ensure that it meets the required specifications for your particular application. This may include specifications such as ASTM, SAE, or AMS. It is also important to purchase from a reputable supplier to ensure that you receive high-quality material.

In addition to its strength and toughness, 4130 alloy steel sheet has good corrosion resistance and can be easily machined, making it a popular choice for many applications in the aerospace, defense, and oil and gas industries.