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Application Of Liberty Engine Materials To The Automotive Industry
The success of the Liberty engine program was an engineer...

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

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

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Armor plate makers sometimes use the copper ball or Siemens' ...

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

Short Method Of Treatment
In the new method, the packed pots are run into the case-har...

The Influence Of Size
The size of the piece influences the physical properties obta...

Hints For Tool Steel Users
Do not hesitate to ask for information from the maker as to t...

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...

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

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

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

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

Although it is possible to work steels cold, to an extent de...

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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