Sheet metal processing is an extremely important part of the manufacturing industry. The choice of materials directly affects the structural strength, appearance texture, function realization and production cost of the product. For suppliers, understanding the material logic behind the customer's product function can provide more professional and valuable suggestions. This article will share a practical guide on how to scientifically select materials in sheet metal processing around four common application scenarios: structural parts, appearance parts, conductive parts and lightweight design.
1. Structural parts: steel or stainless steel is preferred, focusing on strength and stability
For structural parts with supporting, load-bearing or installation functions as the main ones, the primary consideration is strength, rigidity and processing reliability. In this regard, steel and stainless steel are evergreen choices.
Carbon steel (such as Q235): high cost performance, good welding performance, suitable for large-volume standard structural parts such as racks, pallets, support arms, etc. The disadvantage is that it is easy to rust and requires additional coating treatment.
Stainless steel (such as 304, 316): has excellent corrosion resistance based on strength, suitable for outdoor, humid or food, medical and other environments with high hygiene requirements. The processing cost is slightly higher, but the subsequent maintenance cost is low.
Supplier suggestion: If the customer's product is in a cost-sensitive industry (such as mechanical equipment), steel is recommended; if the product has higher weather resistance requirements (such as outdoor chassis, water purification equipment), stainless steel is more reliable.
2. Appearance parts: aluminum alloy or brushed stainless steel to enhance visual texture
Appearance parts should be thin and easy to process, beautiful in appearance, and have strong surface processability. Such parts are usually the parts that users directly contact. The material selection is not only related to performance, but also reflects the brand tone.
Aluminum alloy (such as 5052, 6061): lightweight, good ductility, can present rich colors and delicate texture after anodizing, widely used in consumer electronics, home appliance panels, etc.
Brushed stainless steel: Stainless steel has a unique texture after brushing, is scratch-resistant and not easy to leave fingerprints, and is often used in high-end electrical appliances, kitchen and bathroom equipment, facade decoration, etc.
Supplier suggestion: If customers value product design and surface touch experience, aluminum alloy can be recommended first; if the target market is high-end and focuses on stable texture, brushed stainless steel can be recommended.
3. Conductive parts: copper or brass, excellent electrical and thermal conductivity
In sheet metal parts that require electrical connection, signal transmission or heat removal, the electrical conductivity and thermal conductivity of the material become the core considerations.
Pure copper (such as T2 copper): It has extremely strong electrical conductivity and is the preferred material for electrical connectors, electrode sheets, terminal blocks, etc.
Brass (copper-zinc alloy): It has good electrical conductivity and is stronger, and is easy to process into precision parts such as nuts, plugs, and electrical accessories.
It should be noted that copper materials are relatively expensive, and surface oxidation must be prevented during processing. It is also recommended to do some protective treatment in the later stage.
Supplier suggestion: If customers have extremely high requirements for electrical performance (such as new energy, industrial electric control), pure copper is preferred; if both mechanical strength and electrical performance are taken into account (such as connectors, instrument accessories), brass is more suitable.
4. Lightweight products: Aluminum is the first choice, taking into account both performance and energy saving
In the fields of portable devices, aviation parts, new energy equipment, etc., the weight of the product is directly related to the user experience, transportation costs and even energy consumption performance. In such scenarios, the advantages of aluminum are particularly prominent.
Aluminum alloy materials have a good strength-to-weight ratio, excellent corrosion resistance and high degree of freedom in forming, and are a natural choice for lightweight design.
After processing, it can be sprayed, oxidized, electrophoresed and other surface treatments, which are both beautiful and durable.
Supplier suggestion: When customers have lightweight requirements, aluminum is recommended first; for mid-to-high-end products, it can also be combined with anodizing or coating treatment to improve the overall grade.
