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usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high-speed steels. -- Self`-hard"en*ed, a.

A yellowish alloy of copper and zinc. See Simplor.

divide; to disconnect; to sever; to part in any manner. From the fine gold I separate the alloy. Dryden. Separate thyself, I pray thee, from me. Gen. xiii. 9. Who shall separate us from the love of Christ Rom. viii. 35.

An alloy of copper, invented by the Japanese, having a very dark blue color approaching black.

ver shell (Zoöl.), a marine bivalve of the genus Anomia. See Anomia. -- Silver steel, an alloy of steel with a very small proportion of silver. -- Silver stick, a title given to the title field officer of the Life Guards when on duty at the palace. [Eng.] Thackeray. -- Silver tree (Bot.), a South African tree (Leuca…

An alloy of copper and zinc, resembling brass, but of a golden color. Ure.

Purely; without alloy. Milton.

product. Symbol Na (Natrium). Atomic weight 23. Specific gravity 0.97. Sodium amalgam, an alloy of sodium and mercury, usually produced as a gray metallic crystalline substance, which is used as a reducing agent, and otherwise. -- Sodium bicarbonate, a white crystalline substance, HNaCO3, with a slight alkaline taste…

A metal or metallic alloy used when melted for uniting adjacent metallic edges or surfaces; a metallic coment. Hence, anything which unites or cements. Hard solder, a solder which fuses only at a red heat, as one composed of zinc and copper, or silver and copper, etc. -- Soft solder, a solder fusible at comparatively…

much more brilliant in the adult male than in the female. Speculum metal, a hard, brittle alloy used for making the reflectors of telescopes and other instruments, usually consisting of copper and tin in various proportions, one of the best being that in which there are 126.4 parts of copper to 58.9 parts of tin, with…

reaches twenty-five per cent and upwards it has a granular structure, and constitutes the alloy ferro manganese, largely used in the manufacture of Bessemer steel. Called also specular pig iron, spiegel, and spiegeleisen.

pressions on other bodies, as a die. 'T is gold so pure It can not bear the stamp without alloy. Dryden.

The proportion of weights of fine metal and alloy established by authority. By the present standard of the coinage, sixty-two shillings is coined out of one pound weight of silver. Arbuthnot.

een one half of one per cent and one and a half per cent of carbon), and consisting of an alloy of iron with an iron carbide. Steel, unlike wrought iron, can be tempered, and retains magnetism. Its malleability decreases, and fusibility increases, with an increase in carbon.

Any alloy of copper, zinc, tin, and iron, of which cannon are sometimes made.

Thin iron sheets coated with an alloy of lead and tin; -- so called because made up of three metals.

form the reflective surface of mirrors, and in solder, bronze, speculum metal, and other alloys. Its compounds are designated as stannous, or stannic. Symbol Sn (Stannum). Atomic weight 117.4.

An alloy of copper and zinc, resembling brass, and containing about 84 per cent of copper; -- called also German, or Dutch, brass. It is very malleable and ductile, and when beaten into thin leaves is sometimes called Dutch metal. The addition of arsenic makes white tombac. [Written also tombak, and tambac.]…

A small bar of gold and silver, either pure, or alloyed in some known proportion with copper, for trying the purity of articles of gold or silver by comparison of the streaks made by the article and the bar on a touchstone.

riends transmute us into idols. Buckminster. Transmuting sorrow into golden joy Free from alloy. H. Smith.