BY THE SAME AUTHOR. Practical Metallurgy and Assay Globe 8vo. Price 6s. With Illustrat Elementary Metallurgy for Use of S Globe 8vo. Price 4s. With Illustrati Iron and Steel Manufacture A TEXT-BOOK FOR BEGINNERS. Globe 8vo. Price 3s. 6d. With Illustra PREFACE As a teacher of metallurgy, living and working Birmingham people, it is not surprising that the su metallic alloys has claimed a considerable amount author's attention, seeing that Birmingham is the ver of what may be termed the mixed-metals trades. A work adequate to the importance of the sub yet to be written, for our knowledge of the phenomen attend the union of metals is still very imperfect, a upon a comparatively slender experimental basis. hoped that the present volume may at least supply which is becoming increasingly felt by practical men. as by a large number of students, who desire a more acquaintance with the nature and properties of metal alloyed state, as well as with metals in the free stat The author has aimed at taking up the subjed ordinary metallurgical treatises leave off, dealing w metals in a state of admixture with each other, how such mixtures are usefully employed. In cases have come under the author's notice, where the prop certain alloys have been investigated by eminent m may be taken as authorities on the subject, an abs their researches is given in the succeeding pages, and as possible, the source of the information is ledged. In some instances where knowledge a lacking, such as in German silver, for example, endeavoured to supply the deficiency by exper own, as well as to test the accuracy of some pu ments which appeared to him doubtful. It has been thought advisable to give a br the main properties of the separate metals, and of certain elements upon them, seeing that com are not chemically pure substances, and that of the common impurities often produces a result, which may be a useful guide to the ma special cases, and assist him to determine the anomalies which are constantly occurring in pra As many persons engaged in the melting a metals are not very familiar with chemical prod account of chemical terms and principles, and the non-metallic elements, is given for their gui The author has experienced considerable dealing with the various alloys in a system without repetition, but hopes that, with the copious index, any given alloy may be easily re The first portion deals with the principal ments, and their classification into suitable refractory materials used in making crucibles a construction; as well as the properties and us fluxes. The alloys themselves are arranged i ing order : I. Copper alloys, including brass and bronze II. Nickel alloys, including German silver. III. Tin alloys, including soft solder, fusibl Britannia metal. |