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

Steel Making

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

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

Vanadium
Vanadium has a very marked effect upon alloy steels rich in c...

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

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

Carbon Tool Steel
Heat to a bright red, about 1,500 to 1,550 deg.F. Do not ham...

The Effect
The heating at 1,600 deg.F. gives the first heat treatment w...

Calibration Of Pyrometer With Common Salt
An easy and convenient method for standardization and one whi...

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

Heat Treatment Of Axles
Parts of this general type should be heat-treated to show the...

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Heavy Forging Practice
In heavy forging practice where the metal is being worked at...

The Care Of Carburizing Compounds
Of all the opportunities for practicing economy in the heat-t...

Carburizing By Gas
The process of carburizing by gas, briefly mentioned on page ...

Connecting Rods
The material used for all connecting rods on the Liberty engi...

The Penetration Of Carbon
Carburized mild steel is used to a great extent in the manufa...

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

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

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

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



Manganese






Category: COMPOSITION AND PROPERTIES OF STEEL

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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