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Steel Making

Armor plate makers sometimes use the copper ball or Siemens' ...

Annealing In Bone
Steel and cast iron may both be annealed in granulated bone. ...

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

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

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

Highly Stressed Parts
The highly stressed parts on the Liberty engine consisted of ...

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

The Forging Of Steel
So much depends upon the forging of steel that this operation...

Effect Of A Small Amount Of Copper In Medium-carbon Steel
This shows the result of tests by C. R. Hayward and A. B. Joh...

MANGANESE is a metal much like iron. Its chemical symbol is M...

Bessemer Process
The bessemer process consists of charging molten pig iron int...

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

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

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

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

Plant For Forging Rifle Barrels
The forging of rifle barrels in large quantities and heat-tre...

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

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

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

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



MANGANESE is a metal much like iron. Its chemical symbol is Mn. It
is somewhat more active than iron in many chemical changes--notably
it has what is apparently a stronger attraction for oxygen and
sulphur than has iron. Therefore the metal is used (especially in
the so-called basic process) to free the molten steel of oxygen,
acting in a manner similar to silicon, as explained above. The
compound of manganese and oxygen is readily eliminated from the
metal. Sufficient excess of elemental manganese should remain so
that the purchaser may be sure that the iron has been properly
deoxidized, and to render harmless the traces of sulphur present.
No damage is done by the presence of a little manganese in steel,
quite the reverse. Consequently it is common to find steels containing
from 0.3 to 1.5 per cent.

Next: Alloying Elements

Previous: Silicon

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