The combination of high-speed steel (HSS) and low alloy steel in BIM (bimetallic) oscillating multitool saw blades significantly enhances their overall performance, making them a top choice for demanding cutting tasks. High-speed steel, known for its ability to maintain hardness even at elevated temperatures, is typically used in the teeth of the saw blade. This feature is crucial for ensuring superior cutting performance, especially when working with tough materials like metal. High-speed steel remains sharp for a longer time compared to traditional blade materials, minimizing the need for frequent re-sharpening. This, in turn, allows users to perform more efficient and continuous cuts without the concern of the blade overheating or losing sharpness too quickly. The saw blade can handle heavier workloads while maintaining its effectiveness throughout the cutting process.
On the other hand, the low alloy steel used in the blade's backing provides essential structural support. Low alloy steel is known for its strength, yet it maintains a certain level of flexibility, which prevents the blade from warping or breaking under intense pressure. This balance of strength and flexibility ensures the blade can withstand the forces involved in high-performance cutting without losing its integrity. When the two materials—high-speed steel for the cutting surface and low alloy steel for the backing—are combined, the saw blade benefits from the high cutting efficiency of HSS and the durability and toughness provided by low alloy steel.
This combination not only increases the blade's cutting efficiency but also enhances its overall durability and wear resistance. The high-speed steel teeth can withstand high friction and heat generated during the cutting process, which is particularly important when cutting through tough materials. The low alloy steel body, on the other hand, resists fatigue over time, offering longer blade life even under demanding and continuous usage. This improved durability results in a more cost-effective solution, as users do not need to replace the blade as frequently, leading to fewer disruptions in work and increased productivity.
Another significant advantage of using this combination of materials is the reduction in blade deformation. When cutting dense or hard materials, blades often face high pressure and stress, which can cause them to bend or warp. However, the high strength and toughness of low alloy steel minimize this risk, helping the saw blade maintain its shape and functionality. This resistance to deformation ensures precision during cutting, allowing for smooth, accurate, and consistent cuts.
Both high-speed steel and low alloy steel offer excellent resistance to corrosion. While high-speed steel prevents rust and oxidation on the cutting surface, the low alloy steel provides additional protection for the blade's overall structure. This dual resistance to corrosion ensures the blade remains in optimal condition even in harsh environments, such as high-humidity areas or when exposed to various chemicals, thus extending the lifespan of the tool.
