Bi-Metal Hacksaw Blades

Chinese professional manufacturer of bi-metal hacksaw blades

Hacksaw Blade Selection Chart

Material	Over 5mm	2~5mm	Blow 2mm
Aluminium	18 TPI	18~24 TPI	24~32 TPI
Asbestos	18 TPI	18~24 TPI	24~32 TPI
Bronze	18 TPI	24~32 TPI	32 TPI
Hard Rubber	18 TPI	18 TPI	24 TPI
Copper	18 TPI	18~24 TPI	24~32 TPI
Brass	18 TPI	24~32 TPI	32 TPI
Hard Plastic	18 TPI	18~24 TPI	24~32 TPI
Cast Iron	18 TPI	18~24 TPI	24~32 TPI
Mild Steel	18 TPI	24 TPI	32 TPI
Structural Steel- Low Alloy	18 TPI	24 TPI	32 TPI
Structural Steel- High Alloy	24 TPI	24 TPI	32 TPI
Tool Steel- Low Alloy	18 TPI	24 TPI	32 TPI
Tool Steel- High Alloy	24 TPI	24 TPI	32 TPI
High-Speed Steel	24 TPI	24 TPI	32 TPI
Stainless Steel	18 TPI	24 TPI	32 TPI

What is Bi-Metal Saw Blade?

Bi-metal blades are a modern solution to cutting hard metals including steel. These blades are produced for many different styles of saws, including hacksaws, band saws, reciprocating saws and more. These blades last up to 10 times as long as traditional milled saw blades.

Bi-Metal Saw Blade's History

Before bi-metal blades were invented, saw blades were cut wholly from steel. But for more than 35 years bi-metal blades have been in use in all functions of cutting metal.

How Does Bi-Metal Saw Blade Work?

Bi-metal blades are, as their name suggests, made of two metals. These two metals, which are usually different types of steel are welded together. Spring steel is often used for backing and high-speed steel for edging.

Bi-Metal Saw Blade's Benefits

Because of the welding process, which is usually done with an electron beam, weld teeth last longer and are able to cut through harder materials, such as steel, more easily.

Bi-Metal Saw Blade's Uses

While bi-metal blades can be used for many different materials, the most commonly used bi-metal blades are designed to cut different forms of metals. The determining factor is the teeth per inch; more teeth per inch (tpi) are used to cut harder materials.

Bi-Metal Saw Blade's New Improvements

Additions of new metals, such as chromium, and new bonding techniques, such as diffusion bonding, are adding strength and helping reduce heat. Heat especially is a damaging factor in blades and can break teeth off.