SHEET NON-FERROUS METALS 

 TABLE IX — Continued 



777 



B. & S. Gage 



No. 26. 



No. 28. 



No. 30. 



No. 32. 



No. 34 . 



No. 36. 



Temper, 



B. &S. 



Numbers 



Hard 







2 

 4 

 6 

 8 

 10 







2 

 4 

 6 

 8 

 10 







2 

 4 

 6 

 8 

 10 



1 

 2 

 4 

 6 

 8 

 10 







2 

 4 

 6 

 8 

 10 





 2 

 4 

 6 

 8 

 10 



Thickness, 

 in. 



0.0169 

 0.0167 

 0.0168 

 0.0168 

 0.0165 

 0.0172 



0.0133 

 0.0135 

 0.0134 

 0.0135 

 0.0135 

 0.0132 



0.0108 

 0.0103 

 0.0106 

 0.0106 

 0.0108 

 0.0108 



0.0085 

 0.0084 

 0.0085 

 0.0087 

 0.0086 

 0.0085 



0.0071 



0.0065 



0.0071 



0.0071 



0.00705 



0.0072 



0.0057 

 0.0054 

 0.0056 

 0.0056 

 0.0056 

 0.0052 



Actual 

 Percentage 

 Reduction 

 by Rolling 







17.3 

 34.3 

 50.9 

 62.4 

 66.5 





 21.1 

 33.5 

 49.0 

 60.1 

 67.7 







18.8 

 36.6 

 48.7 

 58.6 

 68.4 







17.8 

 33.6 

 46.0 

 59.4 

 63.0 





 29.2 

 39.6 

 46.9 

 57.1 

 64.5 







16.7 

 34.1 

 51.5 

 60.9 

 68.3 



Rockwell 



Hardness, 



"B" Scale, 



J1^-in. Ball, 



100-kg. Load 



(Red Figures) 



11.0 

 64.4 

 77.3 

 87.4 

 90.2 

 91.2 



13.2 

 65.4 

 77.0 

 83.2 

 89.6 

 91.5 



28.5 

 55.7 

 75.7 

 81.2 

 86.1 

 90.3 



Tensile 



Strength, 



lb. per 



sq. in. 



46 

 • 58 

 71 

 88 

 95 

 99 



45 

 61 

 71 

 83 

 94 

 100 



45 

 63 

 74 

 84 

 90 



200 

 100 

 800 

 600 

 600 

 100 



800 

 100 

 400 

 600 

 700 

 100 



600 

 600 

 000 

 000 

 600 

 600 



800 

 500 

 900 

 300 

 700 

 700 



200 

 400 

 900 

 800 

 700 

 200 



600 

 700 

 400 

 900 

 700 

 100 



Elonga- 

 tion in 

 2 in., 

 per cent 



58.0 



26.5 



9 



2 



1.5 



1.5 



61.5 

 24 



8 



2 



1.5 



1 



54 

 20 



4 



2 



1.5 



1 



51.5 

 24.5 



5 



1.5 



1 



0.5 



39 

 20.5 



4.5 



1.5 



1 



0.75 



33 

 18 



4 



2 



2 



1 



Note. — Tensile strength and percentage elongation are an average of 3 specimens 

 in each case; Rockwell hardness values are an average of 15 determinations of 5 

 readings on each of 3 tension test specimens. 



Alloy G Brass Sheet: 



It has been pointed out in a previous paper ^^ that this material, 



consisting nominally of 72 per cent of copper and 28 per cent of 



zinc, gives the maximum tensile properties possible with the alpha 



" W. H. Bassett and C. H. Davis, "Physical Characteristics of Copper and Zinc 

 Alloys," Proceedings, Inst. Metals Div., Am. Inst. Mining and Metallurgical Engrs., 

 1928. 



