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

High-carbon Machinery Steel
The carbon content of this steel is above 30 points and is ha...

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

Annealing Alloy Steel
The term alloy steel, from the steel maker's point of view, r...

Alloying Elements
Commercial steels of even the simplest types are therefore p...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Preventing Decarbonization Of Tool Steel
It is especially important to prevent decarbonization in such...

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

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

Critical Points
One of the most important means of investigating the properti...

Knowing What Takes Place
How are we to know if we have given a piece of steel the ver...

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

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

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

Process Of Carburizing
Carburizing imparts a shell of high-carbon content to a low-...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...

Take Time For Hardening
Uneven heating and poor quenching has caused loss of many ve...

Phosphorus
PHOSPHORUS is an element (symbol P) which enters the metal fr...



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.





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Previous: Sulphur



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