Reasons for Using Bi-metal Bandsaw Blades

Jan 02, 2019

Bi-metal, unlike an alloy (a mix of two or more metals) is a material wherein different metals are stacked in two layers, and welded together. Bi-metal blades have many functions and allow for greater flexibility for fabricators. Here are some reasons to consider using bi-metal bandsaw blades in your cutting projects.

Benefits of Bi-metal Bandsaw Blades

  • Durable with ability to withstand fatigue
  • High-speed steel tooth tips welded to steel edge
  • Straighter cuts due to high band tension
  • Blade hardness can withstand high temperatures
  • Ability to cut various types of steel and mixed metals
  • Useful for a wide range of shapes and structures

The types of steel that these blades can cut include carbon steel, structural steel, and stainless steel. They can also cut aluminum, brass, or high-alloys. Due to their strength and flexible properties, they're useful for cutting pipes and tubes. Various manufacturers and fabricators use these blades, along with a wide variety of maintenance shops because they can handle tough to cut metals, bundles and maintenance applications. Essentially, these blades are very versatile and affordable.

Blade Variations

Bandsaw blades comprised of bi-metal come in various forms, depending on their function. Lenox is a leading brand that offers a wide selection of these blades, which can be customized for your needs. Length, width, thickness and teeth per inch (TPI) are essential factors to think about for customization.

The Lenox Contestor GT is a bi-metal bandsaw blade with spaced out sharp teeth, whereas the company's RX+ has many more fine teeth. In between is the QXP bandsaw blade. The blades with wider gullets (spaces between teeth) provide smoother cuts, whereas fewer teeth allow for the removal of more material. Conventional blade width sizes typically range from .25 inches to over 3 inches, while length is more open to whatever you need based on your machine. Echols Saw & Supply is a proud seller of Lenox blades. Browse Lenox's collection of bi-metal bandsaw blades here

Durability Factors

The lifespan of bi-metals depends largely on how they are used. They generally last much longer than carbon blades while delivering high performance, which are primary reasons that they are favored by fabricators. Here are some of the main factors that determine longevity:

  • cutting material
  • bandsaw condition
  • machine speed
  • amount of production per day

A major key to the longevity of these bi-metals is that the carrier is made of spring steel while the teeth are made of cobalt steel M42, which is an alloy well suited for high speeds due to its superior hardness. The fact that bi-metals are resistant to tooth stripping and temperatures up to 1,000 degrees Fahrenheit are also keys to their longevity. Bi-metals coated with titanium nitride increase hardness, making them ideal for continuous use.


The best way to learn about your bandsaw blade needs is to have a discussion with experienced experts who have been in business for years. For more informative about bi-metal or other types of bandsaw blades, contact Echols Saw and Supply at 602-278-3918.