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Steel Making

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

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

Impact Tests
Impact tests are of considerable importance as an indication ...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

Testing And Inspection Of Heat Treatment
The hard parts of the gear must be so hard that a new mill f...

The Theory Of Tempering
Steel that has been hardened is generally harder and more br...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Crucible Steel
Crucible steel is still made by melting material in a clay or...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...

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

Heat Treatment Of Steel
Heat treatment consists in heating and cooling metal at defin...

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Annealing Work
With the exception of several of the higher types of alloy s...

Placing Of Pyrometers
When installing a pyrometer, care should be taken that it re...

Hardening Operation
Hardening a gear is accomplished as follows: The gear is tak...

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...



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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