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

Steel Making

Hardening Carbon Steel For Tools
For years the toolmaker had full sway in regard to make of st...

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...

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

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

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

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

Quenching The Work
In some operations case-hardened work is quenched from the bo...

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

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

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

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

William Kelly's Air-boiling Process
An account of Bessemer's address to the British Association w...

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

The Leeds And Northrup Potentiometer System
The potentiometer pyrometer system is both flexible and subst...

Gas Consumption For Carburizing
Although the advantages offered by the gas-fired furnace for ...

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

Double Annealing
Water annealing consists in heating the piece, allowing it to...

Carbon-steel Forgings
Low-stressed, carbon-steel forgings include such parts as car...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...



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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