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   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

Standard Analysis
The selection of a standard analysis by the manufacturer is t...

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

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

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

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

The Modern Hardening Room
A hardening room of today means a very different place from ...

Placing The Thermo-couples
The following illustrations from the Taylor Instrument Compan...

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

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

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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

Crankshaft
The crankshaft was the most highly stressed part of the entir...

Suggestions For Handling High-speed Steels
The following suggestions for handling high-speed steels are ...

Annealing
There is no mystery or secret about the proper annealing of d...

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



Phosphorus






Category: COMPOSITION AND PROPERTIES OF STEEL

PHOSPHORUS is an element (symbol P) which enters the metal from
the ore. It remains in the steel when made by the so-called acid
process, but it can be easily eliminated down to 0.06 per cent
in the basic process. In fact the discovery of the basic process
was necessary before the huge iron deposits of Belgium and the
Franco-German border could be used. These ores contain several
per cent phosphorus, and made a very brittle steel (cold short)
until basic furnaces were used. Basic furnaces allow the formation
of a slag high in lime, which takes practically all the phosphorus
out of the metal. Not only is the resulting metal usable, but the
slag makes a very excellent fertilizer, and is in good demand.





Next: Silicon

Previous: Sulphur



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