What are the best materials for circular saw blades?
The choice of circular saw blade material depends on the specific application and processing requirements. Here are some common circular saw blade materials and their characteristics:
Carbide: Possesses high hardness, high wear resistance, and good heat resistance, suitable for high-speed cutting and processing hard materials. Compared to high-speed steel, carbide circular saw blades have a longer lifespan, but are also relatively more expensive.
High-speed steel: A commonly used traditional material for circular saw blades, it has high hardness and good wear resistance, as well as good toughness, able to withstand a certain amount of impact and vibration. Therefore, high-speed steel circular saw blades are still widely used in low-speed cutting and applications requiring high tool toughness.
Ceramics: A new type of tool material developed in recent years, it has advantages such as high hardness, high wear resistance, and high chemical stability. Ceramic tools have excellent heat resistance and can maintain stable cutting performance at high temperatures. However, ceramic tools have poor toughness and are sensitive to vibration and impact, so special care is needed during use. Ceramic circular saw blades are mainly used for processing high-hardness materials and difficult-to-machine materials, such as cast iron and hardened steel.
Cubic Boron Nitride (CBN): An ultra-hard tool material, its hardness is second only to diamond. Cubic boron nitride circular saw blades have advantages such as high hardness, high wear resistance, and high thermal stability, and are particularly suitable for processing high-temperature alloys, high-speed steel, and other difficult-to-machine materials. Compared to ceramic tools, cubic boron nitride tools have better toughness and stronger resistance to vibration and impact. However, cubic boron nitride tools are more expensive and are mainly used for high-precision and high-efficiency cutting.
Stainless steel: Such as 440C stainless steel, which has a high carbon content, good hardness and wear resistance, and also good rust resistance. This steel is also used in tool manufacturing, especially in applications requiring a certain degree of corrosion resistance.
Carbon tool steel and alloy tool steel: Carbon tool steel is suitable for low-speed cutting and has high hardness and wear resistance. High-speed steel, a type of alloy tool steel, can withstand high temperatures and is suitable for high-speed cutting. In summary, there is no single “best” material for circular blades; the choice of material should be determined by specific processing requirements, material properties, and budget constraints. For example, in applications requiring high wear resistance and heat resistance, carbide or ceramic may be better choices; while in applications where tool toughness is a priority, high-speed steel is more suitable.