Alloy steel plate 4140 is a high-strength, low-alloy steel plate that contains chromium, molybdenum, and manganese as alloying elements. It is commonly used in applications that require high strength, such as in the aerospace, automotive, and oil and gas industries.

The 4140 alloy steel plate can be supplied in a variety of conditions, including annealed, normalized, and tempered. The annealed condition provides a soft and ductile material that can be easily machined, while the normalized and tempered conditions provide a harder and stronger material that is resistant to wear and abrasion.

The composition of alloy steel plate 4140 makes it highly resistant to heat, wear, and corrosion. It has a high fatigue strength, which makes it ideal for use in high-stress applications. It is also easy to weld and form, making it a versatile material choice.

Alloy steel plate 4140 is commonly used in a variety of applications, including aircraft parts, automotive components, industrial equipment, and machinery. It is also used in the manufacturing of tools, dies, and molds due to its excellent hardness and wear resistance.

When purchasing alloy steel plate 4140, it is important to ensure that it meets the required specifications for your particular application. This may include specifications such as ASTM or SAE. It is also important to purchase from a reputable supplier to ensure that you receive high-quality material.