. The Bell System technical journal . 0 Tensile Strength, lb. per sq. in. 54,300 73,600 86,800 108,500 116,600 115,700 57,500 73,400 91,500 105,300 107,000 117,600 55,400 72,400 86,500 102,200 101,900 111,000 58,20089,00091,40097,200108,200115,300 63,900 81,900 99,100 111,300 110,200 118,800 61,300 77,900 97,900 103,000 114,800 110,500 Elonga-tion in2 in.,per cent Rockwell Hardness, B Scale, Ji
. The Bell System technical journal . 0 Tensile Strength, lb. per sq. in. 54,300 73,600 86,800 108,500 116,600 115,700 57,500 73,400 91,500 105,300 107,000 117,600 55,400 72,400 86,500 102,200 101,900 111,000 58,20089,00091,40097,200108,200115,300 63,900 81,900 99,100 111,300 110,200 118,800 61,300 77,900 97,900 103,000 114,800 110,500 Elonga-tion in2 in.,per cent Rockwell Hardness, B Scale, Ji^-in. Ball (Red Figures) Note.—Tensile strength and percentage elongation are an average of 3 specimensin each case; Rockwell hardness values are an average of 15 determinations of 5readings on each of the 3 tension test specimens. SHEET NON-FERROUS METALS 793. 50,000 60,000 70,000 80,000 90,000 100,000 120,000 STRENGTH-PSI Fig. 17—Relation of Rockwell Hardness to Tensile Strength of Alloy C Phosphor- Bronze Rolling Series. 794 BELL SYSTEM TECHNICAL JOURNAL 130,000 120,000 90,000 60000 / -j^ / / ^^ DASHED LINESSHOW TENSILELIMITS / X / / / / / / ^ / / / / V/ / ^: / /^ / / -2 Q :^ a r^ / ^^ x, .^ / y^ 0=I4GAX=I6+ = 18• =?0e=22® =24e =26 n =28 A=30ffi=32a =34® =36 (.064)(.051)(.040)(.032)(.025)(.020)(.016)C0I25)(.010)(.008)(006)(.005) -10 10 20 30 PERCENT REDUCTION 40 50 BY ROLLING 60 70 Fig. 18—Relation of Tensile Strength to Percentage of Reduction of Alloy CPhosphor-Bronze Rolling Series. Experience Data During and subsequent to the laboratory work covered in thispaper, a series of data was obtained on regular commercial shipmentsof non-ferrous sheet material. About 700 lots of brass, nickel-silverand phosphor-bronze sheet in various tem
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