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Steel Making

Tempering Colors On Carbon Steels
Opinions differ as to the temperature which is indicated by t...

Conclusions
Martien was probably never a serious contender for the honor ...

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

Judging The Heat Of Steel
While the use of a pyrometer is of course the only way to hav...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

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

Nickel-chromium
A combination of the characteristics of nickel and the charac...

Steel Can Be Worked Cold
As noted above, steel can be worked cold, as in the case of ...

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

Open Hearth Process
The open hearth furnace consists of a big brick room with a l...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

Hardening High-speed Steel
In forging use coke for fuel in the forge. Heat steel slowly ...

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

Oil-hardening Steel
Heat slowly and uniformly to 1,450 deg.F. and forge thorough...

Machineability
Reheating for machine ability was done at 100 deg. less than ...

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

Surface Carburizing
Carburizing, commonly called case-hardening, is the art of pr...

Annealing Of High-speed Steel
For annealing high-speed steel, some makers recommend using g...

The Pyrometer And Its Use
In the heat treatment of steel, it has become absolutely nece...

Pyrometers For Molten Metal
Pyrometers for molten metal are connected to portable thermoc...



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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