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

Nickel
Nickel may be considered as the toughest among the non-rare a...

Air-hardening Steels
These steels are recommended for boring, turning and planing...

Heat Treatment Of Lathe Planer And Similar Tools
FIRE.--For these tools a good fire is one made of hard foundr...

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

Properties Of Steel
Steels are known by certain tests. Early tests were more or l...

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

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

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Silicon
SILICON is a very widespread element (symbol Si), being an es...

Drop Forging Dies
The kind of steel used in the die of course influences the he...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

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

Steel Before The 1850's
In spite of a rapid increase in the use of machines and the ...

The Packing Department
In Fig. 56 is shown the packing pots where the work is packe...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

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

Furnace Data
In order to give definite information concerning furnaces, fu...



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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