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Steel Making

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

Quality And Structure
The quality of high-speed steel is dependent to a very great ...

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

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...

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

Carbon Steels For Different Tools
All users of tool steels should carefully study the different...

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

Effects Of Proper Annealing
Proper annealing of low-carbon steels causes a complete solu...

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

Quenching
It is considered good practice to quench alloy steels from th...

Critical Points
One of the most important means of investigating the properti...

Non-shrinking Oil-hardening Steels
Certain steels have a very low rate of expansion and contract...

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Annealing Of Rifle Components At Springfield Armory
In general, all forgings of the components of the arms manufa...

Carbon In Tool Steel
Carbon tool steel, or tool steel as it is commonly called, us...

Forging High-speed Steel
Heat very slowly and carefully to from 1,800 to 2,000 deg.F....

Introduction Of Carbon
The matter to which these notes are primarily directed is the...

Temperature For Annealing
Theoretically, annealing should be accomplished at a tempera...

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

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



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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