ASTM_DS40-1965.pdf

Elevated-Temperature Properties of Basic-Oxygen Steel Presented at the NATIONAL MEETING ON STEEL AMERICAN SOCIETY FOR TESTING AND MATERIALS Mexico City,Mexico,Jan.24-29,1965 Reg.U.S.Pat.Off.ASTM Data Series DS 40 Price$4.00;to Members$2.80 Published by the AMERICAN SOCIETY FOR TESTING AND MATERIALS 1916 Race St.,Philadelphia 3,Pa.1965 by American Society for Testing and Materials Library of Congress Catalog Card Number:65-22073 The Society is not responsible,as a body,for the statements and opinions advanced in this publication.Printed in Philadelphia,Pa.July,1965 Contents PAGE Materials and Experimental Work 1 Results and Discussion 3 Tensile Properties of A 201(Grade A)Steel 3 Tensile Properties of A 212(Grade B)Steel 4 Creep and Creep-Rupture Properties 5 ASTM A 201 Steel 5 ASTM A 212 Steel 6 Summary of the Creep and Creep-Rupture Properties of the Basid Oxygen ASTM A 201 and A 212 Steels.7 Metallographic Studies 7 Supplementary Testing 8 Summary and Conclusions 10 References 10 Tables 1 to 11 11 to 18 Figures 1 to 23 19 to 38 Appendix 39 Tables 12 to 18 41 to 44 Figures 24 to 42 45 to 55 Related ASTM Publications Evaluation of Metallic Materials in Design for Low-Temperature Service,STP 302(1962)Elevated-Temperature Compression Testing of Sheet Materials,STP 303 (1962)Comparison of the Properties of Basic Oxygen and Open Hearth Steels,STP 364(1963)FOREWORD This symposium was presented during the National Meeting on Steel held in Mexico City,Mexico,Jan.24-29,1965,under the sponsorship of Committee A-l on Steel.Elevated-Temperature Properties of Basic-Oxygen Steel BY C.E.SPAEDER,JR.1 KEY WORDS:carbon steel,creep and creep-rupture properties,room-and elevated-temperature tensile properties,impact properties,transition temperature,strain aging,microstructural changes.ABSTRACT:Because of the relatively limited amount of test data available on steels made by the basic-oxygen process and to supply information on which a decision could be made to include the basic-oxygen process in certain ASTM specifications,the ASTM author-ized a Task Group to determine the properties of carbon steels made by this process.The results of this investigation and information available from previous investigations indicate that the basic-oxygen A 201 and A 212 steels in the hot-rolled condition and in the normalized and tempered condition in comparison with these steels made by the open-hearth process have about the same tensile properties in the range 80 to 1000 F.notch toughness in the range 10 to 110 F,and creep and creep-rupture properties in the range 800 to 1000 F.In addition,the strain-aging characteristics,weldability,steel quality,and microstructures of the steels made by the two processes are similar.REFERENCE:C.E.Spaeder.Jr.Elevated-Temperature Properties of Basic-Oxygen Steel,ASTM STP 387,Am.Soc.Testing Mats.,1965.Because the basic-oxygen2 process has gained prominence only in the past few years,the available data on mechanical properties of steels made by this process are relatively limited.Until sufficient data showed that the mechanical properties of the steel made by this process are equiva-lent to the properties of the same steel produced by the open-hearth or the electric-furnace process,ASTM deferred approval of the basic-oxygen steelmaking process in certain ASTM specifications.Accordingly,the ASTM Committee A-l on Steel authorized a Task Group3 to determine the properties of carbon steels produced by the basic-oxygen process.For comparison,companion open-hearth heats of 1 Research metallurgist,Stainless Steel Products,Applied Research Laboratory,United States Steel Corp.,Monroeville,Pa.2 The basic-oxygen steelmaking process refers to the process in which molten steel is refined under a basic slag by directing a jet of high-purity oxygen onto the surface of the hot-metal bath.VISCOSITY INDEX FROM KINEMATIC VISCOSITY 2.00 to 2.09 cs at 21 OF 0 to 50 V.I.KINEMATIC VISCOSITY AT 210F,CS V.I.2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 KINEMATIC VISCOSITY AT 100F,CS 0 8.376 8.444 8.511 8.579 8.647 8.715 8.784 8.853 8.922 8.991 1 8.359 8.426 8.493 8.561 8.629 8.697 8.766 8.834 8.903 8.972 2 8.341 8.409 8.475 8.543 8.611 8.679 8.747 8.816 8.885 8.953 3 8.324 8.391 8.458 8.525 8.593 8.660 8.729 8.797 8.866 8.934 4 8.306 8.374 8.440 8.507 8.575 8.642 8.710 8.779 8.847 8.915 5 8.289 8.356 8.422 8.489 8.557 8.624 8.692 8.760 8.828 8.897 6 8.271 8.338 8.404 8.471 8.539 8.606 8.674 8.742 8.810 8.878 7 8.254 8.321 8.387 8.454 8.520 8.587 8.655 8.723 8.791 8.859 8 8.236 8.303 8.369 8.436 8.502 8.569 8.637 8.705 8.772 8.840 9 8.219 8.286 8.351 8.418 8.484 8.551 8.618 8.686 8.754 8.821 10 8.202 8.268 8.333 8.400 8.466 8.533 8.600 8.667 8.735 8.802 11 8.184 8.250 8.316 8.382 8.448 8.514 8.582 8.649 8.716 8.783 12 8.167 8.233 8.298 8.364 8.430 8.496 8.563 8.630 8.697 8.764 13 8.149 8.215 8.280 8.346 8.412 8.478 8.545 8.612 8.679 8.746 14 8.132 8.197 8.262 8.328 8.394 8.460 8.526 8.593 8.660 8.727 15 8.114 8.180 8.245 8.310