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Steel Making

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

This steel like any other steel when distorted by cold worki...

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

Double Annealing
Water annealing consists in heating the piece, allowing it to...

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

Hardness Testing
The word hardness is used to express various properties of me...

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

A Chromium-cobalt Steel
The Latrobe Steel Company make a high-speed steel without tun...

Application To The Automotive Industry
The information given on the various parts of the Liberty eng...

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

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

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

Tungsten, as an alloy in steel, has been known and used for a...

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

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

Bessemer Process
The bessemer process consists of charging molten pig iron int...

High Speed Steel


For centuries the secret art of making tool steel was handed down
from father to son. The manufacture of tool steel is still an art
which, by the aid of science, has lost much of its secrecy; yet
tool steel is today made by practical men skilled as melters,
hammer-men, and rollers, each knowing his art. These practical
men willingly accept guidance from the chemist and metallurgists.

A knowledge of conditions existing today in the manufacture of
high-speed steel is essential to steel treaters. It is well for
the manufacturer to have steel treaters understand some of his
troubles and difficulties, so that they will better comprehend the
necessity of certain trade customs and practices, and, realizing
the manufacturer's desire to cooperate with them, will reciprocate.

The manufacturer of high-speed steel knows and appreciates the
troubles and difficulties that may sometimes arise in the heat-treating
of his product. His aim is to make a uniform steel that will best
meet the requirements of the average machine shop on general work,
and at the same time allow the widest variation in heat treatment
to give desired results.

High speed steel is one of the most complex alloys known. A
representative steel contains approximately 24 per cent of alloying
metals, namely, tungsten, chromium, vanadium, silicon, manganese,
and in addition there is often found cobalt, molybdenum, uranium,
nickel, tin, copper and arsenic.

Next: Standard Analysis

Previous: Tempering Colors On Carbon Steels

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