logging chipper/planer blade steel?

A

andrewfinnie13

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Jun 20, 2009
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i got some logging/chipping blades from a friend in the logging industry. there is no markings on this piece of blade to distinguish the material or where it was made and im basically wondering what kind of steel and if its worth making knife blades out of. i know its pretty hard as well but also if i need to heat treat these blades after im all done.

thanks.
 
Chipper blades and planer blades require two different steels .The chippers get lots of impact and wear from dirt etc. I'll see if I can find out.
 
I did some quick checking, and found no specifics. Everything I found was a round-about description such as - "Alloy steel" , "Heat treated and tempered steel", "High Chromium steel", and one as "65 Manganese Steel".

I used to sharpen the chipper blades for a landscaping and tree removal company. The blades he had were D-2 according to him. Smaller planner blades are often carbide. There is no way to guess unless you can get a manufacturer name and stock number.

Stacy
 
Chipper blades in the logging industry are different from those used by landscapers. The logging blades chip off the bark from the log.In the bark there is dirt from being dragged through the woods.They are shaped more like fingers set into a drum.
Landscapers chippers cut wood into chips.
 
We have a company locally that make telephone poles. I have some of their blades. 3/16 x 2x 6. I had one tested. They fell in A-2 spec's, even used they are sharp! I cut myself handling them.
 
They may well be very good steel. A company I know with a similar industrial application started with D2 - moved to some kind of HSS, and eventually landed on A11, which is 10V. Extremely hard and abrasion resistant stuff with moderately good toughness.

The problem with all of these materials is you can't just anneal them easily and jump right back into a new HT. You have one shot at the heat treat unless you're setup to return them to a proper fine grained spheroidized condition. Otherwise, you can get very large grain growth during a second austenitization. Can you work them without getting them hot? I'll wager their current HT is pretty good.
 
wonderful.. i was thinking they are great steel because of the application there being used for. i dont really know if the steel planer/chipper blades were used for either/or but i do know the edges can take a beating. ill try my hardest to work the blades into a good shape and not get them too hot. all o got if a craftsman 2X42" belt sander right now..ill keep you guys posted.

thanks
 
wonderful.. i was thinking they are great steel because of the application there being used for. i dont really know if the steel planer/chipper blades were used for either/or but i do know the edges can take a beating. ill try my hardest to work the blades into a good shape and not get them too hot. all o got if a craftsman 2X42" belt sander right now..ill keep you guys posted.

thanks
 
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