ABSTRACT

No abstract

Thermal expansion data are given on 28 specimens of iron and steel. Most of the specimens were heated above 9000 C. Tables and curves are The tests were made by direct measurements of the length changes and not relative to some other substance or element.The observations were made without disturbing the furnace or specimen and therefore give correct relative values for all temperature intervals.Variations in length changes, contraction and expansion reversals while passing through the critical regions, and similar changes are compared and discussed.An attempt is made to throw some light on the magnitude of the tendency toward warping or surface cracking as related to the rate of cooling and width of critical regions.Expansion coefficients are tabulated for the various alloys and for various tempera ture intervals.Data on one specimen of vacuum electrolytic iron and one of gray cast iron are recorded.The length changes incident to the drawing of a sample of hardened steel are shown in a curve.

No abstract

No abstract