. The Bell System technical journal . No. 34. ... 6 100,500 No. 34. .. 8 109,200 No. 34. ... 10 115,900 No. 36. .. 0 0 69,400 No. 36. .. 2 83,200 No. 36. .. 4 96,500 No. 36. .. 6 102,700 No. 36. .. 8 104,100 No. 36. 10 111,100 Note.—Tensile strength values are an average of 3 specimens in each case; Rock-well hardness values are an average of 15 determinations of 5 readings on each of3 tension test spec
. The Bell System technical journal . No. 34. ... 6 100,500 No. 34. .. 8 109,200 No. 34. ... 10 115,900 No. 36. .. 0 0 69,400 No. 36. .. 2 83,200 No. 36. .. 4 96,500 No. 36. .. 6 102,700 No. 36. .. 8 104,100 No. 36. 10 111,100 Note.—Tensile strength values are an average of 3 specimens in each case; Rock-well hardness values are an average of 15 determinations of 5 readings on each of3 tension test specimens. 786 BELL SYSTEM TECHNICAL JOURNAL percentage reduction are shown in Fig. 14. Table XII shows theRockwell hardness and tensile strength limits for alloy B. Thechemical composition limits are given in Table VI. Referring to the curve plotted in Fig. 14, showing the tensilestrength limits plotted against percentage of reduction, it is seen thatone series lies close to the upper curve whereas the remaining rolling. 60,000 80,000 90,000 100,000 110,000 120,000TENSILE STRENGTH —PSI 130,000 Fig. 13—Relation of Rockwell Hardness to Tensile Strength of Alloy B Nickel-Silver Rolling Series Using 100 and 150-kg. Loads. series are nearer to the lower curve. This is due to the fact that thebar rolled to No. 22 B. & S. gage sheet had a lighter anneal in theready-to-finish condition than the other bars, but it was felt that thisanneal was close to the commercial range of annealing practice andconsequently this series was given some weight when the commerciallimits were drawn up. SHEET NON-FERROUS METALS 787 130,000 120,000 110,000 100,000 90,000 70,000 A / / -7^ / ^■ DASHED LINESSHOW TENSILELIMITS / / -v^ / .£_Jl D ® /o/ / / ffl^ / / -/^ / -r- / / y y -/^ / / .^ ^ (5 ^^ t ^ y o / -7^ 1/ / «-^ :|4GA = 16= 18= 20= 22= 24= 26= 28= 30= 32= 34= 36 (.064)(.051)(.040)(.032)(.025)(.020)(.016)(.0125)(.010)(.008)(.006)(.005) -10 10 20 30PERCENT REDUCTION 40 50BY R
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
