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

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

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

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

Phosphorus
Phosphorus is one of the impurities in steel, and it has been...

Detrimental Elements
Sulphur and phosphorus are two elements known to be detrimen...

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

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

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

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

Properties Of Alloy Steels
The following table shows the percentages of carbon, manganes...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

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

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

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

Sulphur
SULPHUR is another element (symbol S) which is always found i...

Piston Pin
The piston pin on an aviation engine must possess maximum res...

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



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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