The selection of bending machine materials needs to consider the following factors:

1. Workload and strength requirements:

- Select the material according to the pressure and load that the bending machine needs to withstand when working. If the machine needs to handle heavy duty or high strength materials, then you need to choose metal materials with high strength, such as alloy steel.

2. Wear and corrosion resistance:

- Consider whether the working environment is prone to wear or corrosion of the material. If there are corrosive substances in the working environment or need to work continuously for a long time, materials with good wear resistance and corrosion resistance should be selected, such as stainless steel.

3. Rigidity and stability:

- The rigidity and stability of the machine need to be maintained during the bending process to ensure machining accuracy. Therefore, the rigidity of the material is an important consideration.

4. Processability and weldability:

- The processing properties of materials affect manufacturing costs and manufacturing efficiency. Choosing materials that are easy to process and weld can simplify the manufacturing process.

5. Cost consideration:

- The cost of materials directly affects the final selling price and market competitiveness of the bending machine. It is necessary to choose reasonable cost materials under the premise of meeting the performance requirements.

6. Maintainability and longevity:

- The durability and maintainability of the material are crucial to the service life of the press. Choosing materials with good durability can reduce maintenance costs and downtime.

7. Availability of materials:

Supply chain stability and availability of selected materials need to be considered to ensure that production is not affected by material shortages.

8. Environmental and safety standards:

- Select materials according to national and regional environmental and safety standards to ensure that products comply with relevant regulatory requirements.

9. Customer special requirements:

- If the customer has specific material requirements for the bending machine, such as food-grade stainless steel, it needs to be selected according to the customer's requirements.

10. Technological updates and future trends:

When selecting materials, it is also necessary to consider future technological developments and market trends in order to facilitate a smooth transition when the product is upgraded or revamped.

Taking the above factors into consideration, the bending machine material that is most suitable for specific application scenarios and performance requirements can be selected. In practice, trade-offs and trade-offs may need to be made on a case-by-case basis.