In metallic substances the cohesion of the particles assumes an important bearing in the question of relative toughness and power of resisting a strain; hence the term cohesion is modified into that of the property of "tenacity.
This toughness is now imparted to the hard piece by heating it once more in another furnace to a temperature of approximately 1,100° F.
This combination of hardness and toughness produced to the proper degree resists the explosive power of the powder and also causes the wear on the gun in firing to be diminished and made as slight as possible.
Otherwise in clay, which we call the cledgy mould, we seldom hear of any, because the moisture and the toughness of the soil is such as will not suffer them to draw and make their burrows deep.
The toughness of the shell makes cracking difficult, too, and since only rarely is one found that can be broken by a hand cracker, it is necessary to use the flatiron-and-hammer method.
Attempts were also made to increase the toughness of the back by the substitution of mild nickel steel for wrought iron.
The great toughness of the plate is perhaps even more remarkable than its hardness; its width was only 6.
Perhaps of all the tales in this volume, none could be selected as better proving the toughness of a traditional belief than No.
But in the majority of cases the singular toughness and marvellous recuperative power of the Chinese seconded his skilful surgery.
With the physical toughness of his race, he soon recovered and hurried to where he had last seen his father.
Its toughness qualifies it for wagon hubs, but it is sometimes objected to because its softness causes the mortises to wear larger where the spokes are inserted, and the wheel does not stand as well as when the hubs are of good oak.
Its lightness and toughness make it serviceable as valves and other parts of bellows for blacksmiths, organs, and piano players.
Its toughness fits it for ax, hammer, and other handles.
By crossing the sheets, to make the grain of one lie at right angles to the next, plies of great strength andtoughness are produced.
Sugar maple, hornbeam, and locust occasionally show greater strength than hickory, but they lack in toughness and resiliency--the very properties which give hickory its chief value for many purposes.
Toughness and wearing qualities combined make it an admirable wood for planking and decking for small boats.
Take away hickory's toughness and elasticity and it would cease to be a great vehicle and handle material.
The wood of the northern white cedar possesses a peculiar toughness which is seen in its wearing qualities.
Hickory oak is not an appropriate name, though it doubtless implies that the wood possesses the toughness of hickory.
The strength and toughness of elm make it suitable for frames of tables.
Oak, ash, maple, and elm answer well enough for heavy wagons where strength is more essential than toughness and elasticity.
The iron plates of Pennsylvania and Maryland in strength and toughness know no superior.
And if we allow for the superior strength and toughness of American iron, an additional plate of three inches in thickness would suffice to give them more strength than that of either the French or English mail-clad steamers.
The larger the proportion of copper, the deeper will be the colour, and the greater the density, and, within certain limits, the toughness of the alloy.
The selection being made, the berries are carefully roasted in revolving cylinders by a gradually applied heat, until the aroma is well developed and the toughness destroyed.
The chloride of iron gives toughness to the caustic.
It is chiefly employed in calico-printing, and by shoemakers and lozenge-makers; by the latter to give toughness to the saccharine mass.
The heroism of the burly Alsacian and the toughness of his men barely kept off the fierce rushes of the Moslem horse and foot.
The example of Spain and the cautious strategy of Wellington had dissolved the spell of French invincibility; and the Czar was resolved to trust to the toughness of his people and the defensive strength of his boundless plains.
Elastic wood must necessarily have toughness up to the breaking-point, but tough wood may have but little elasticity.
The rock elm is a valuable variety, esteemed for flexibility and toughness as well as durability and strength.
On the other hand, as regards tenacity of life, recuperative power and what we may term toughness of constitution, woman is without doubt considerably stronger than man.
I rather suspect that you have already got beyond the age when the great medicine could do you good; that speech indicates a great toughness and hardness and bitterness about the heart that does not accumulate in our tender years.
This is only a sample of its toughness and resisting power all along the line.
The vigor and unconquerable toughness of the human animal presented us with three glittering weapons, sunshine, food, and fresh air.
Not only didn't it seem her style, he wouldn't have thought her capable of the toughness or the deliberate violence it required.
He'd be astonished if she turned out to have the necessary toughness now--but if she did, he certainly wouldn't hesitate to make use of it.
The use of the word ought to be confined to the first two minerals mentioned, namely, jadeite and nephrite, for they only possess the extreme toughness together with considerable hardness that we expect of jade.
The garnets are of sufficient toughness so that they may be freely used in rings--and the extensive use of thin slices of garnet to top doublets proves the suitability of the material for resisting wear.
It is also fairly hard, about as hard as quartz, and with the two properties of toughness and hardness it possesses excellent wearing qualities in any kind of mounting.
Resembling a cord in toughness and flexibility, as the roots of some endogenous trees.
They had ill-health some of them, they hadn't the requisite toughness for work, they even took to drink, or went to the bad.
This amount of work can be applied repeatedly and is perhaps the best measure of the toughness of the wood as a working quality, though it is not synonymous with toughness.
These fibres are the elements which give strength and toughness to wood, while the vessels are a source of weakness.
Here not only strength, but toughness and resilience are important.
Toughness is dependent upon the strength, cohesion, quality, length, and arrangement of fibre, and the pliability of the wood.
It follows that in a large log the sapwood, because of the time in the life of the tree when it was grown, may be inferior in hardness, strength, and toughness to equally sound heartwood from the same log.
There is considerable variation in tension failures depending upon thetoughness or the brittleness of the wood, the arrangement of the grain, defects, etc.
In the latter sense hardness combined with toughness is a measure of the wearing ability of wood and is an important consideration in the use of wood for floors, paving blocks, bearings, and rollers.
Flexibility is not the exact counterpart of stiffness, as it also involves toughness and pliability.
Toughness includes flexibility and is the reverse of brittleness, in that tough woods break gradually and give warning of failure.
The torsion or twisting test is useful in determining the toughnessof wood.
Rasping off an outer layer of horn favours evaporation and hardening of the underneath layer, and the toughness so desirable is to some degree replaced by hardness and brittleness.
This maintains the whole wall at the degree of softness and toughness which best preserves elasticity and strength of horn.
The nails with which the cases were fastened were remarkable both for their peculiar shape and for the extraordinary toughness of the iron, far excelling in this respect the wrought iron made in America to day.
The toughness of the wood causes the tools to drag back, so that great care is required in cutting to prevent the lines clipping.
I felt inclined to take off my cap and make a low bow to the gallant and swarthy fellows who sat before me, when I knew the toughness of their hearts and the activity of their limbs.
The skin is about half the thickness of that of the hippopotamus, but of extremetoughness and closeness of texture; when dried and polished it resembles horn.
Only by his catlike agility and the toughness born of many clean years in the saddle did the cowpuncher weather for the time the hurricane that lashed at him.
Fifteen years in the saddle had given him a toughness of fiber no city dweller could possibly equal.
Her moraltoughness of hide prevented her from being much hurt by such speeches as, "Dear me!
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "toughness" in a variety of sentences. We hope that you will now be able to make sentences using this word.
