The core principle is to match material performance with lamination process, usage environment, and core requirements, avoiding failure or unnecessary costs.
Corrosive environment: For exposure to atmosphere, freshwater, mild acids/alkalis, or chemical media, select corrosion-resistant materials (e.g., SUS630, 316 stainless steel). Dry environments can use carbon or low-alloy steel.
Lamination process temperature and pressure: High-temperature/high-pressure lamination requires heat-resistant, deformation-resistant materials (e.g., SUS630, Inconel); normal low-pressure conditions can use structural steel.
Core mechanical requirements: High-strength or impact-loaded components require high-strength materials (e.g., SUS630 martensitic stainless steel, high-strength alloy); basic load-bearing can use Q235, Q355 carbon steel.
Processing and forming: For cutting, welding, or cold working, select materials with good machinability (e.g., SUS630, 304 stainless steel); avoid brittle or hard-to-weld materials.
Functional requirements: Consider thermal conductivity, insulation, wear resistance, or special composite layers as needed.
Cost and supply: Balance performance with cost (carbon steel < stainless steel < high-temperature alloys) and ensure reliable procurement and delivery.