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

Steel Making

High Speed Steel
For centuries the secret art of making tool steel was handed ...

Classifications Of Steel
Among makers and sellers, carbon tool-steels are classed by g...

Tungsten
Tungsten, as an alloy in steel, has been known and used for a...

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

Temperature Recording And Regulation
Each furnace is equipped with pyrometers, but the reading an...

The Quenching Tank
The quenching tank is an important feature of apparatus in c...

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

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

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

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

Preventing Carburizing By Copper-plating
Copper-plating has been found effective and must have a thick...

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

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

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

Robert Mushet
Robert (Forester) Mushet (1811-1891), born in the Forest of D...

Liberty Motor Connecting Rods
The requirements for materials for the Liberty motor connecti...

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

Temperatures To Use
As soon as the temperature of the steel reaches 100 deg.C. (...

Cutting-off Steel From Bar
To cut a piece from an annealed bar, cut off with a hack saw,...

Protective Screens For Furnaces
Workmen needlessly exposed to the flames, heat and glare from...



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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