SHEET NON-FERROUS METALS 



781 



TABLE XI 

 Physical Properties of Alloy A Nickel-Silver Sheet 



B. &s. 



Gage 



No. 10 

 No. 11 

 No. 10 

 No. 10 

 No. 10 



No. 16 

 No. 17 

 No. 16 

 No. 16 

 No. 16 



No. 22 

 No. 23 



No. 22 

 No. 22 

 No. 22 



No. 28 

 No. 27 

 No. 28 

 No. 28 

 No. 28 



No. 30 

 No. 32 



No. 34 

 No. 34 



No. 34 



No. 34 

 No. 34 



Temper, 

 B. & S. 



Numbers 

 Hard 



Thickness, 



0.1034 

 0.0910 

 0.1022 

 0.1037 

 0.1035 



0.0517 

 0.0460 

 0.0516 

 0.0503 

 0.0512 



0.0257 

 0.0301 

 0.0266 

 0.0263 

 0.0263 



0.0128 

 0.0145 

 0.0132 

 0.0137 

 0.0130 



0.0105 

 0.0085 



0.0059 

 0.0077 



0.0058 



0.0062 

 0.0060 



Actual 

 Percentage 

 Reduction 

 by Rolling 







7.3 

 21.1 

 36.9 

 49.8 







10.6 

 22.3 

 39.5 

 49.8 







7.8 

 17.2 

 36.1 



48.7 







11.5 

 21.2 

 35.6 

 47.4 





 







12.5 

 17.6 

 25.0 

 29.4 

 41.2 

 50.8 



Elonga- 

 tion in 

 2 in., 



per cent 



37.5 



17.5 



8.5 



5.5 



5.0 



36.5 



21.5 



7.5 



3.5 



4.0 



32.0 



20.0 



7.0 



2.5 



2.0 



35.5 



16.0 



4.5 



1.5 



1.0 



30.5 

 32.0 



28.5 

 6.0 



2.5 



1.0 

 1.0 



Rockwell Hardness, 



'B" Scale, )i^-in. Ball 



(Red Figures) 



100-kg. 

 Load 



37.5 

 73.3 

 80.1 

 84.0 

 86.7 



37.3 

 69.1 

 78.7 

 84.5 

 86.3 



36.4 

 66.6 

 75.5 

 81.4 

 83.3 



23.0 

 65.6 



72.2 

 77.1 

 81.1 



ISO-kg. 

 Load 



—13.5 

 37.5 

 48.7 

 55.2 

 59.7 



—16.7 

 30.1 

 45.5 

 56.2 

 59.0 



26.1 

 41.1 

 51.0 

 55.0 



Tensile 



Strength, 



lb. per 



sq. in. 



54,500 

 62,200 

 70,400 

 79,500 

 82,900 



55,100 

 61,300 

 69,500 

 79,700 

 82,800 



54,400 

 60,600 

 69,100 

 79,600 

 83,700 



54,500 

 62,800 

 69,200 

 80,700 

 84,900 



54,600 

 55,100 



55,600 

 65,200 



74,400 



78,800 

 87,900 



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 B Nickel-Silver Sheet. — The five bars of alloy B had the 

 average analysis given in Table VII. The rolling series made from 

 these five bars consisted of the tempers 2, 4, 6, 8 and 10 numbers hard 

 for each of the even B. & S. gage numbers from No. 14 to No. 36, 

 inclusive. The physical properties of this material are given in 

 Table XIII. The Rockwell hardness-tensile strength relationship is 

 shown by Fig. 13 and the tensile strength limits plotted against 



