Bimetallic plates are not a single type of material but a broad category of plates formed by bonding two metals with different properties using specialized processes. The most common types are wear-resistant composite plates and structural composite plates; the right choice depends on your specific application.
Which type offers the best wear resistance and durability?
If you need materials for high-wear environments-such as mines, cement plants, or ports-bimetallic wear-resistant composite steel plates are the standard choice. These are made by overlay-welding a high-chromium alloy wear-resistant layer onto a base of ordinary steel (such as Q235), creating a metallurgical bond between the two. The surface hardness can reach HRC 62–66, offering 20–25 times the wear resistance of standard low-carbon steel. They are impact-resistant and can be welded or cut. Common specifications include 5+3, 6+4, and 8+6 (where the first number is the total thickness and the second is the thickness of the wear-resistant layer). Prices vary significantly based on specifications and manufacturers-ranging from hundreds of yuan per square meter to thousands of yuan per ton-so it is best to consult a supplier for details.
Which type helps save on precious metal costs?
If you are working in the chemical industry, shipbuilding, or pressure vessel manufacturing, structural bimetallic composite plates are more suitable. Produced via explosive bonding or roll bonding, these plates combine corrosion-resistant or high-strength metals (such as stainless steel, titanium, or copper) with ordinary steel. This approach ensures corrosion resistance while significantly reducing the amount of precious metal required, thereby lowering costs. Examples include titanium-steel and stainless-steel composite plates, which are widely used in petrochemicals, shipbuilding, and power equipment.
Which type bends automatically with temperature changes?
There is also a material known as "thermostatic bimetal." It consists of two metal layers with different thermal expansion coefficients bonded together; when heated, the difference in deformation causes the material to bend automatically. It is commonly used in small devices such as temperature control components, overload protectors, and instruments. Typically ranging from 0.1 to 2.5 mm in thickness, this is a different class of product from the industrial plates mentioned earlier.
The choice depends primarily on your application: choose wear-resistant composite plates for high-wear conditions; choose structural composite plates if you need corrosion resistance and cost savings; and choose thermostatic bimetal materials for temperature control components. It is recommended that you clarify your specific use case before consulting suppliers about relevant specifications and pricing.