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Types of Hacksaw Blades

Hacksaw blades, designed to cut mainly metal, are categorized by the number of teeth per inch. The standard hacksaw blade has 14 to 32 teeth per inch. The set of the teeth, how they are angled in relation to the sides of the blade, determines how well the blade cuts. Hacksaw blades cut many things from thin copper tubing to unruly rusted bolts. Garden hose, water pipes, plastics and old fencing all succumb to the hacksaw blade.

 

32 teeth per inch

A hacksaw blade with 32 teeth per inch gives a finer cut and is good for cutting thin gauge steel or thin-walled tubing, copper tubing or heating duct.

 

24 teeth per inch

Hacksaw blades with 24 teeth per inch are used for medium steel and regular walled tubing. According to the Aviation; Integrated Publishing web site, 24 teeth per inch are also good for cutting angle iron, heavy pipe, brass and copper. Lug nuts, stubborn bolts and iron re-bar are cut with this blade.

 

18 teeth per inch

Hacksaw blades with 18 teeth per inch are used for hard metal iron pipe and large pieces of steel. If you are cutting an old metal water pipe or a chain link fence frame, use this blade.

 

14 teeth per inch

Hacksaw blades with 14 teeth per inch work well with soft metals like aluminum and tin. This blade cuts electrical wire, aluminum chairs and plastic for windows.

 

12 teeth per inch, bi-metal

Bi-metal hacksaw blades have 12 teeth per inch and are used for pipe, tubing, plastic, wood or high speed steel. This blade is good for cutting garden hose, picture frames and plastic chairs.

 

Set of the teeth

There are four different sets, or angles, of the teeth, according to the Aviation; Integrated Publishing website: Alternate set, where one tooth leans to the left and one tooth to the right the length of the blade; double alternate set, with two teeth to the right and two to the left; raker set, where single teeth alternate, but every third tooth is straight; and the wave set, where short sections of teeth bend opposite each other. According to Builder Bill, this wave pattern, with its fine cut, works best on sheet materials.

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