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Steel Making

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

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

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

Hardening
The forgings can be hardened by cooling in still air or quen...

Annealing To Relieve Internal Stresses
Work quenched from a high temperature and not afterward tempe...

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

Correction By Zero Adjustment
Many pyrometers are supplied with a zero adjuster, by means ...

Pickling The Forgings
The forgings were then pickled in a hot solution of either ni...

Rate Of Cooling
At the option of the manufacturer, the above treatment of gea...

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

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

Composition Of Transmission-gear Steel
If the nickel content of this steel is eliminated, and the pe...

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

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...

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

Affinity Of Nickel Steel For Carbon
The carbon- and nickel-steel gears are carburized separately...

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

Air-hardening Steels
These steels are recommended for boring, turning and planing...

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

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



Effect Of A Small Amount Of Copper In Medium-carbon Steel






Category: ALLOYS AND THEIR EFFECT UPON STEEL

This shows the result of tests by C. R. Hayward and A. B. Johnston
on two types of steel: one containing 0.30 per cent carbon, 0.012
per cent phosphorus, and 0.860 per cent copper, and the other 0.365
per cent carbon, 0.053 per cent phosphorus, and 0.030 per cent
copper. The accompanying chart in Fig. 13 shows that high-copper
steel has decided superiority in tensile strength, yield point and
ultimate strength, while the ductility is practically the same.
Hardness tests by both methods show high-copper steel to be harder
than low-copper, and the Charpy shock tests show high-copper steel
also superior to low-copper. The tests confirm those made by Stead,
showing that the behavior of copper steel resembles that of nickel
steel. The high-copper steels show finer grain than the low-copper.
The quenched and drawn specimens of high-copper steel were found
to be slightly more martensitic.





Next: High-chromium Or Rust-proof Steel

Previous: Non-shrinking Oil-hardening Steels



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