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Steel Making

Silicon
SILICON is a very widespread element (symbol Si), being an es...

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

Furnace Data
In order to give definite information concerning furnaces, fu...

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

Crankshaft
The crankshaft was the most highly stressed part of the entir...

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

Carburizing Material
The simplest carburizing substance is charcoal. It is also th...

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

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

Heat-treating Department
The heat-treating department occupies an L-shaped building. ...

Correction For Cold-junction Errors
The voltage generated by a thermo-couple of an electric pyrom...

High-chromium Or Rust-proof Steel
High-chromium, or what is called stainless steel containing f...

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

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

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

Heat Treatment Of Punches And Dies Shears Taps Etc
HEATING.--The degree to which tools of the above classes shou...

The Modern Hardening Room
A hardening room of today means a very different place from ...

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

Impact Tests
Impact tests are of considerable importance as an indication ...

Heat Treatment Of Milling Cutters Drills Reamers Etc
THE FIRE.--Gas and electric furnaces designed for high heats ...



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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