296 



Copper and Copper-base Alloys 



TABLE 2 

 BRASSES 



° Impact Charpy tests made on 10-sq. mm. specimens with a sharp notch. 



* Yield strength 0.10% offset; all tensile tests made on 0.25-in.-diameter rod machined from 1-in. -diameter commercial rod 

 sU specimens unf ractured. 



<= Yield strength — drop of beam method; all tensile tests made on 0.504- 

 specimen, all specimens unfractured. 



<* All tensile tests on specimens 5 mm. (0.197 in.) in diameter; elongation measured on 50-n 

 Recorder; impact — kilogram-meters per square centimeter on specimen 10 X 8 X 100 m.m. having 

 per square millimeter with 120-deg. cone, load of 25 kg. applied for 5 min. 



impact-standard Izod specimen, 

 -diameter rod machined from l-in.-diameter commercial rod; impact-standard Izod 



I. (1.97-in.) gage length; yield strength determined on Amsler 

 45-deg. sharp V notch; hardness — cone hardness in kilograms 



