Judging by the rust and the grind, the inserts are most likely High speed
steel.

The bodies are probably hardened alloy steel. They have to be hard enough to
keep the saw tooth area (that locks in the insert) from getting dinged.

These are enormous stagger tooth horizontal milling cutters used to hog off
enormous amounts of metal.

The inserts are there for several reasons.
#1 it's cheaper,
#2 if you chip a tooth it doesn't trash the whole cutter, and
#3 Each resharpening makes the cutter slightly smaller. With this type of
insert, when they get ground too small for the job, the teeth can be moved
out one notch and reground to spec.

Paul K. Dickman

"Jeff Dantzler" wrote in message
...
I was at the scrapyard today and picked up some cutters.

Here is a photo:


The 3 thick ones have the following stamped into them:
UNION-CARD DIV
STW 8 x 1 1/2
BLADE-1122 R & L
WEDGE-W-25 & W-25L

The thinner one has:
Apex Tool & Cutter Co Inc Shelton Conn
53-60404 8X 742 46-820052-01
BLADES 65-66-11

It's a safe bet that the teeth are some type of carbide.

What type of steel are the blades made out of?

What is the typical use of these cutters?

I ask because I will be very happy if I got 40+ lb. of some type
of tool steel that can be forged into interesting, sharp things.

Jeff Dantzler
Seattle, WA


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