... Read more of at Tax Sale Property.orgInformational Site Network Informational
Privacy
   Home - Steel Making - Categories - Manufacturing and the Economy of Machinery

Steel Making

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

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

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

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

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

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

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

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

Protectors For Thermo-couples
Thermo-couples must be protected from the danger of mechanica...

Annealing
There is no mystery or secret about the proper annealing of d...

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

Tensile Properties
Strength of a metal is usually expressed in the number of pou...

The Thermo-couple
With the application of the thermo-couple, the measurement of...

Manganese
Manganese adds considerably to the tensile strength of steel,...

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

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

S A E Heat Treatments
The Society of Automotive Engineers have adopted certain heat...

An Automatic Temperature Control Pyrometer
Automatic temperature control instruments are similar to the ...

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

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



Carbon Steels For Different Tools






Category: HARDENING CARBON STEEL FOR TOOLS

All users of tool steels should carefully study the different qualities
of the steels they handle. Different uses requires different kinds of
steel for best results, and for the purpose of designating different
steels some makers have adopted the two terms temper, and quality,
to distinguish between them.

In this case temper refers to the amount of carbon which is combined
with the iron to make the metal into a steel. The quality means
the absence of phosphorous, sulphur and other impurities, these
depending on the ores and the methods of treatment.

Steel makers have various ways of designating carbon steels for
different purposes. Some of these systems involve the use of numbers,
that of the Latrobe Steel Company being given herewith. It will
be noted that the numbers are based on 20 points of carbon per
unit. The names given the different tempers are also of interest.
Other makers use different numbers.

The temper list follows:

LATROBE TEMPER LIST OF CARBON TOOL STEELS
No. 3 temper 0.60 to 0.69 per cent carbon
No. 3-1/2 temper 0.70 to 0.79 per cent carbon
No. 4 temper 0.80 to 0.89 per cent carbon
No. 4-1/2 temper 0.90 to 0.99 pet cent carbon
No. 5 temper 1.00 to 1.09 per cent carbon
No. 5-1/2 temper 1.10 to 1.19 per cent carbon
No. 6 temper 1.20 to 1.29 per cent carbon
No. 6-1/2 temper 1.30 to 1.39 per cent carbon
No. 7 temper 1.40 to 1.49 per cent carbon





Next: Uses Of The Various Tempers Of Carbon Tool Steel

Previous: Carbon In Tool Steel



Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 3248