4340 steel plate specification,Fresh Data Released

4340 steel plate specification,Introduction to 4340 Steel Plate Specification 4340 steel plate is a widely used material in various industries. It is a

Introduction to 4340 Steel Plate Specification

4340 steel plate is a widely used material in various industries. It is a low - alloy steel that contains nickel, chromium, and molybdenum. The specification of 4340 steel plate is quite important as it determines its properties and applications.

Typically, the chemical composition of 4340 steel plate includes about 0.38 - 0.43% carbon, 0.70 - 0.90% manganese, 0.035% maximum phosphorus, 0.040% maximum sulfur, 1.65 - 2.00% nickel, 0.70 - 0.90% chromium, and 0.20 - 0.30% molybdenum. These elements contribute to its strength, toughness, and hardenability.

In terms of mechanical properties, 4340 steel plate has a high tensile strength. It can typically reach a tensile strength of around 1250 - 1400 MPa in the quenched and tempered condition. This makes it suitable for applications where high strength is required, such as in the aerospace industry for components like landing gear parts, and in the automotive industry for parts that need to withstand high stress.

Applications of 4340 Steel Plate

One of the main applications of 4340 steel plate is in the manufacturing of heavy - duty machinery. For example, in construction equipment like bulldozers and excavators, 4340 steel plate is used to make parts that need to be strong and durable. In the military, it is used for making weapons and armored vehicles. Its high strength and toughness can effectively protect against various threats.

Another application area is in the energy sector. In oil and gas exploration, 4340 steel plate can be used for drill bits and other down - hole tools. These tools need to be able to withstand the high pressure and corrosive environment underground. The properties of 4340 steel plate make it a reliable choice for such applications.

Questions and Answers about 4340 Steel Plate Specification

Question 1: What are the main elements in the chemical composition of 4340 steel plate?Answer: The main elements in the chemical composition of 4340 steel plate are carbon (0.38 - 0.43%), manganese (0.70 - 0.90%), nickel (1.65 - 2.00%), chromium (0.70 - 0.90%), molybdenum (0.20 - 0.30%), with maximum phosphorus of 0.035% and maximum sulfur of 0.040%.

Question 2: What kind of mechanical properties does 4340 steel plate have?Answer: 4340 steel plate has high tensile strength. In the quenched and tempered condition, it can reach a tensile strength of around 1250 - 1400 MPa, which makes it suitable for applications requiring high strength.