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Steel Making

Quenching Tool Steel
To secure proper hardness, the cooling of quenching of steel ...

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

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

Preparing Parts For Local Case-hardening
At the works of the Dayton Engineering Laboratories Company, ...

Preventing Cracks In Hardening
The blacksmith in the small shop, where equipment is usually ...

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

High Speed Steel
For centuries the secret art of making tool steel was handed ...

Lathe And Planer Tools
TO FORGE.--Gently warm the steel to remove any chill is parti...

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

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

Piston Pin
The piston pin on an aviation engine must possess maximum res...

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

Fatigue Tests
It has been known for fifty years that a beam or rod would fa...

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

Typical Oil-fired Furnaces
Several types of standard oil-fired furnaces are shown herew...

Care In Annealing
Not only will benefits in machining be found by careful anne...

Gears
The material used for all gears on the Liberty engine was sel...

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

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

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



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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