National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Page 18
... limits adopted for certification . In the metallographic examination , samples from each of the eight prepared white irons showed near the chill cast surface a columnar type of structure which extended upward approximately one - half ...
... limits adopted for certification . In the metallographic examination , samples from each of the eight prepared white irons showed near the chill cast surface a columnar type of structure which extended upward approximately one - half ...
Page 19
... limits the accuracy of the certification . Whereas 1 percent of the amount present is normally acceptable from the practical significance standpoint , with lead in free - cutting brass +5 percent of the amount present is deemed ...
... limits the accuracy of the certification . Whereas 1 percent of the amount present is normally acceptable from the practical significance standpoint , with lead in free - cutting brass +5 percent of the amount present is deemed ...
Page 3
... limit of each class and the number of slices found therein is stated . The area is given in bits and in percent of the net image area ( 28,224 bits ) . A value , based on the histogram of the line slice distribution , is given in ...
... limit of each class and the number of slices found therein is stated . The area is given in bits and in percent of the net image area ( 28,224 bits ) . A value , based on the histogram of the line slice distribution , is given in ...
Page 4
... limit where over- exposure could conceivably blot out smaller inclusions and reduce the size of larger ones . Furthermore , when sharp black inclusions were obtained against white backgrounds by contact printing , the print truly ...
... limit where over- exposure could conceivably blot out smaller inclusions and reduce the size of larger ones . Furthermore , when sharp black inclusions were obtained against white backgrounds by contact printing , the print truly ...
Page 6
... limits ** limits concentra- tion 12 15 % 1.47-2.35 1.30-2.19 % 1.50-2.38 1. 33-2 . 12 % 1.85 1.74 10 1.28-2.22 1. 48-2.15 1.75 240 See Appendix [ 7 ] for complete data . ** Range shown is the certified value ( 1.73 % ) ± 3 times the ...
... limits ** limits concentra- tion 12 15 % 1.47-2.35 1.30-2.19 % 1.50-2.38 1. 33-2 . 12 % 1.85 1.74 10 1.28-2.22 1. 48-2.15 1.75 240 See Appendix [ 7 ] for complete data . ** Range shown is the certified value ( 1.73 % ) ± 3 times the ...
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Common terms and phrases
acid solution add 10 ml aliquot alloy ammonium Analytical Analytical curve assay average beaker boil Bureau of Standards butyl acetate calibration carbon Cartridge Brass cents chemical shift chill-cast chromium composition Cool copper Copper-Base Spectrochemical Standards COPPER-BASE STANDARDS determination dilute Dissolve electrolyte electron probe electron probe microanalysis elements Erlenmeyer flask ferrite Figure filter free-cutting brass fumes glass grain heat homogeneity inclusions Institute for Materials Laboratory Low-Alloy Steel manganese Materials Research mean free path measurement metal method microns ml of H2SO4 ml of HNO3 ml of water Mossbauer National Bureau NBS Misc NBS Miscellaneous Publication NBS Spectrometric nickel nitric acid obtained oxide paper pearlite percent photometric precipitate procedure Publ Reagents sodium sodium nitroprusside spectrometer standard deviation Standard Reference Materials sulfate sulfuric acid Technology titration Transfer uranium Vacuum fusion values vanadium viscosity volumetric flask wash weight white cast iron x-ray zinc