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Steel Making

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Composition And Properties Of Steel
It is a remarkable fact that one can look through a dozen tex...

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

Quenching The Work
In some operations case-hardened work is quenched from the bo...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...



Carbon In Tool Steel






Category: HARDENING CARBON STEEL FOR TOOLS

Carbon tool steel, or tool steel as it is commonly called, usually
contains from 80 to 125 points (or from 0.80 to 1.25 per cent)
of carbon, and none of the alloys which go to make up the high
speed steels. This was formerly known also as crucible or cast
steel, or crucible cast steel, from the way in which it was made.
This was before the days of steel castings. The advent of these
caused so much confusion that the term was soon dropped. When we
say tool steel, we nearly always refer to carbon-tool steel,
high-speed steel being usually designated by that name.

For many purposes carbon-steel cutters are still found best, although
where a large amount of material is to be removed at a rapid rate,
it has given way to high-speed steels.





Next: Carbon Steels For Different Tools

Previous: Take Time For Hardening



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