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Steel Making

Silicon
Silicon prevents, to a large extent, defects such as gas bubb...

Rate Of Absorption
According to Guillet, the absorption of carbon is favored by ...

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

Tempering Round Dies
A number of circular dies of carbon tool steel for use in too...

Uses Of The Various Tempers Of Carbon Tool Steel
DIE TEMPER.--No. 3: All kinds of dies for deep stamping, pres...

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

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

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

Annealing Method
Forgings which are too hard to machine are put in pots with ...

Tool Or Crucible Steel
Crucible steel can be annealed either in muffled furnace or b...

Refining The Grain
This is remedied by reheating the piece to a temperature slig...

For Milling Cutters And Formed Tools
FORGING.--Forge as before.--ANNEALING.--Place the steel in a ...

Manganese
MANGANESE is a metal much like iron. Its chemical symbol is M...

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

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

Sulphur
Sulphur is another impurity and high sulphur is even a greate...

Leeds And Northrup Optical Pyrometer
The principles of this very popular method of measuring tempe...

Carburizing Low-carbon Sleeves
Low-carbon sleeves are carburized and pushed on malleable-ir...

Hardening High-speed Steels
We will now take up the matter of hardening high-speed steels...

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



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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