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Steel Making

Steel Worked In Austenitic State
As a general rule steel should be worked when it is in the a...

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

Steel For Chisels And Punches
The highest grades of carbon or tempering steels are to be re...

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

Flange Shields For Furnaces
Such portable flame shields as the one illustrated in Fig. 1...

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

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

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

The Effect Of Tempering On Water-quenched Gages
The following information has been supplied by Automatic and ...

Blending The Compound
Essentially, this consists of the sturdy, power-driven separa...

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

Shrinking And Enlarging Work
Steel can be shrunk or enlarged by proper heating and cooling...

Heating Of Manganese Steel
Another form of heat-treating furnace is that which is used ...

Annealing
ANNEALING can be done by heating to temperatures ranging from...

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

Case-hardening Treatments For Various Steels
Plain water, salt water and linseed oil are the three most co...

Ebbw Vale And The Bessemer Process
After his British Association address in August 1856, Besseme...

Brown Automatic Signaling Pyrometer
In large heat-treating plants it has been customary to mainta...

Molybdenum
Molybdenum steels have been made commercially for twenty-five...

Instructions For Working High-speed Steel
Owing to the wide variations in the composition of high-speed...



Impact Tests






Category: COMPOSITION AND PROPERTIES OF STEEL

Impact tests are of considerable importance as an indication of
how a metal will perform under shock. Some engineers think that
the tensile test, which is one made under slow loading, should
therefore be supplemented by another showing what will happen if
the load is applied almost instantaneously. This test, however, has
not been standardized, and depends to a considerable extent upon
the type of machine, but more especially the size of the specimen
and the way it is nicked. The machine is generally a swinging
heavy pendulum. It falls a certain height, strikes the sample at
the lowest point, and swings on past. The difference between the
downward and upward swing is a measure of the energy it took to
break the test piece.





Next: Fatigue Tests

Previous: Tensile Properties



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