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Steel Making

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

Chromium
Chromium when alloyed with steel, has the characteristic func...

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

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

Gears
The material used for all gears on the Liberty engine was sel...

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

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

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

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

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

Cyanide Bath For Tool Steels
All high-carbon tool steels are heated in a cyanide bath. Wi...

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

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



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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