Questions regarding the selection of 65 manganese steel wire mesh

65Mn steel wire mesh belongs to high-carbon manganese steel and is one of the most commonly used spring steels. Manganese improves hardenability, and its surface decarburization tendency is less than that of silicon steel. After heat treatment, its comprehensive mechanical properties are superior to carbon steel. The excellent wear resistance of 65Mn steel wire mesh makes it widely used in high-wear environments such as mines and coal mines.

When using 65Mn steel, it's important to note that not all specifications of steel mesh are suitable for it. 65Mn steel is 600-800 yuan more expensive per ton than 45 steel, leading many customers to believe that 65Mn steel wire mesh is superior. This is not necessarily true. In many cases, 65Mn steel wire mesh is less durable than 45 steel wire mesh. 65Mn steel wire mesh is characterized by high hardness and good wear resistance, but it is relatively brittle. 45 steel is less hard than 65Mn, but has better toughness.

65 Manganese steel is suitable for making woven or positioned steel mesh. In most cases, woven or positioned steel mesh has low curvature, generally not exceeding 3%. Some woven steel meshes, such as 200-wire 03, have a curvature of approximately 9%. For steel meshes with a curvature greater than 6%, it's best not to use 65 Manganese steel. It's not that it can't be used, but the resulting mesh won't have the expected performance of 65 Manganese. Excessive curvature puts too much strain on the wires, and 65 Manganese steel's toughness is not good. Excessive strain significantly affects the internal structure of the 65 Manganese steel. It may appear fine initially, but the effects will become apparent after use. What should last 3 months might not even last a week. This is due to the poor toughness of 65 Manganese steel. Therefore, if the curvature is greater than 6%, avoid choosing 65 Manganese steel; 45# steel is better. If you must use 65 Manganese steel, use annealed 65 Manganese steel. However, annealed 65 Manganese steel has a wire diameter limitation; it cannot exceed 400 wires. More expensive materials are not necessarily better. Customers should pay close attention to this.

Furthermore, 65mm and 45mm steel are not very suitable for electric welding, as they are very easy to break during welding. If the steel mesh product needs to be further welded after it is made, it is best to choose iron wire, i.e., Q235B.