The Tin Brasses 



135 



80 



70 



^60 

 0-50 



9 •4-0 



30 



o 20 



10 



II.O 20.7 29.4 37.2 44.0 50.0 55.5 60.5 64.8 68.6 

 Percent Reduction of Area by Rolling 

 012345 6789 10 

 B&S Numbers Hard 



Chart 3. — The effect of cold rolling on the yield strengths of bearing 

 or weatherstrip bronze strip, previously annealed to a grain size of 

 0.015 mm. (90.49 % copper, 0.48 % tin, balance zinc) (0.040-in. stock). 



80 



70 



C 



1/5 



u 50 



!U 

 Q- 

 Xi40 



_1 



§30 

 20 



10 







11.0 20.7 29.4 37.2 440 50.O 555 60.5 64.5 68.6 

 Percent Reduction of Area by Rolling 

 01 23456789 10 11 

 BS-S Numbers Hard 



Chaet 4. — The effect of cold rolling on the yield strengths of bearing 

 or weatherstrip bronze strip, previously annealed to a grain size of 

 O.OSO mm. (90.49 % copper, 0.48 % tin, balance zinc) (0.040-in. stock). 



800 900 1000 1100 1200 1300 



Annealing Temp, in Deg.H( IHrat Ten^p.) 



Chart 5. — The effect of annealing on the grain-growing character- 

 istics of bearing or weatherstrip bronze strip, previously cold-rolled 

 6 B. & S. Nos. (50 per cent reduction of area) from two different grain 

 sizes, 0.015 and 0.080 mm. (90.49 % copper, 0.48 % tin, balance zinc) 

 j!0.040-in. stock). 



90 



80 



70 =r=^- 



CR 400 500 600 700 800 900 1000 1100 1200 1300 

 Annealing Temp. in Deg.F (IHr. at Temp.) 



Chart O.^The effect of annealing on the tensile strength and 

 apparent elastic limit of bearing or weatherstrip bronze strip, previ- 

 ously cold-rolled 6 B. & S. Nos. (50 per cent reduction of area) from 

 two different grain sizes, 0.015 and 0.080 mm. (90.49 % copper, 0.48 % 

 tin, balance zinc) (0.040-in. stock). 



