Boron Steels

A small amount of boron (0'0005 per cent minimum ) is successfully used in the United States as a replacement of appreciable quantities of nickel, chromium and moly-bdenum in structural low-alloy steels. The standard AISI grades are designed to replace conventional alloy steels of equivalent hardenability. The boron steels are norma- lly manufactured by the basic open-hearth process, although the basic electric furnace process is also used . Special equipment is not required in their manufacture and fabrication , but certain precautions are essential in making the boron addition and fini- shing the heats. The production of boron steels attained a maximum of about 0.7 million tons in 1952 and thereaft -er decreased to about 0.5 and 0.25 million tons in 1953 and 1954 respectively. Examples are given to show the general influence of boron on hardenability and mechanical properties of selected steels. A review is made of the literature on the mechanism of boron in increasing hardenability and a summary is presented of known facts on the behaciour of boron in iron and steel

Research on Light Metals in the Metallurgy Division, National Bureau of Standards

THE Metallurgy Division of the National Bureau of Standards has accelerated its research programme on metals in order to meet the increased demand for materi-als with improved and special properties so essential for continuing the technological advances of the space arse. Much of the work is designed to furnish basic information on metals and alloys in terms of their structures. Studies are being conducted on problems related to creep, fatigue, corrosion , metal physics , preparation of extremely pure metals and other related fields . Some of' the emphasis of the prograninie is being placed on evaluating specific properties of aluminium, titanium , magnesium, and their alloys

NBS monograph

From Abstract: "This Monograph has been prepared to give an understanding of heat treatment principally to those unacquainted with this subject. This Monograph has been prepared to answer such inquiries and to give in simplified form a working knowledge of the basic theoretical and practical principles involved in the heat treatment of iron and steel.

NBS monograph

From Abstract: "This Monograph is a revision of the previous NBS Monograph 18. Its purpose is to provide an understanding of the heat treatment of iron and steels, principally to those unacquainted with this subject. The basic principles involved in the heat treatment of these materials are presented in simple form." From Introduction: "This Monograph has been prepared to answer such inquires and to give in simplified form a working knowledge of the basic theoretical and practical principles involved in the heat treatment of iron and steel.

A Geometrical Practise, Named Pantometria

The LEME Corpus Manual has an editorial introduction, indexes of subjects, proper names, and chronology, a primary bibliography of LEME corpus texts, as well as English language texts not included in the Corpus, a description of the XML encoding and of lemmatization and source analysis tools. The appendix includes lists of language abbreviations and of abbreviations for parts of speech.Social Sciences and Humanities Research Council of CanadaCanada Foundation for InnovationUniversity of Toronto LibrariesUniversity of Toronto PressInformation & Instructional Technology, Faculty of Arts and Science, University of Toront

An Arithmetical Military Treatise named Stratioticos

The LEME Corpus Manual has an editorial introduction, indexes of subjects, proper names, and chronology, a primary bibliography of LEME corpus texts, as well as English language texts not included in the Corpus, a description of the XML encoding and of lemmatization and source analysis tools. The appendix includes lists of language abbreviations and of abbreviations for parts of speech.Social Sciences and Humanities Research Council of CanadaCanada Foundation for InnovationUniversity of Toronto LibrariesUniversity of Toronto PressInformation & Instructional Technology, Faculty of Arts and Science, University of Toront

Alae seu scalae mathematicae, quibus visibilium remotissima coelorum theatra conscendi ... tum hujus portentosi syderis in mundi Boreali plaga ... coruscanti distantia et magnitudo immensa ... cognosci liquidissime possit ...

DiggesLondini. Apud Thomam Marsh. - Kolopho

An arithmetical warlike treatise named stratioticos : compendiously teaching the science of nombers as well in fractions as integers, and so much of the rules and aequations algebraicall, and art of nombers cossical, as are requisite for the profession of a souldier. Together with the moderne militare discipline, offices, lawes and orders in every well governed campe and armie inviolably to be observed

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Research on Light Metals in the Metallurgy Division, National Bureau of Standards

The Metallurgy Division of the National Bureau of Standards has accelerated its research programme on metals in order to meet the increased demand for materials with improved and special properties so essential for conti-nuing the technological advances of the space age. Much of the work is designed to furnish basic information on metals and alloys in terms of their structures. Studies are being conducted on problems related to creep, fatigue, corrosion, metal physics, preparation of extremely pure metals and other related fields. Some of the emphasis of the programme is being placed on evaluating specific prop-erties of aluminium, titanium, magnesium and their alloys