The Leaded Brasses 



93 



25 



30 35 



Shear S+reng-th, 1,000 Lb. per Sq. In. 



Chabt 7.— Conversion chart tor determination of shear strength of hardware bronze (87.00 to 90.00 % copper, 1.00 to 2.00 % lead, balance zinc) 



when tensile strength is known. Accurate to +5 %.<"' 



TABLE 2 

 LANCASHIRE BRASS 



General Data — Strip" 

 Copper, 73.53%; lead, 2.24%; zinc, balance 



Property 



Hard" 



Soft' 



Tensile strength, p.s.i. (000 omitted) 



Apparent elastic limit, p.s.i. (000 omitted) 



Yield strength, 0.5% extension, p.s.i. (000 omitted) 



Yield strength, 0.2%, offset, p.s.i. (000 omitted) 



Yield strength, 0.1%, offset, p.s.i. (000 omitted) 



Elongation, 7o in 2 in 



Rockwell hardness F, Ke-in. ball, 60-kg. load 



Rockwell hardness B, Ke-in. ball, 100-kg. load 



Rockwell hardness G, He-in. ball, 150-kg. load 



Rockwell hardness 15-T, Jle-in. ball, 15-kg. load 



Rockwell hardness 30-T, He-in. ball, 30-kg. load 



Endurance limit, p.s.i. (000 omitted) 



Young's modulus of elasticity, p.s.i 



Melting point, °F 



Density, lb. per cu. in 



Coefficient of expansion, per °C. from 25-300°C 



Electrical conductivity, % I.A.C.S., 68°F 



Thermal conductivity, B.t.u. per sq. ft. per ft. per hr. per °F., 68°F 



» All tests conducted on 0.040-in. stock. 



» 6 B. & S. Nos., hard, 0.070-0.015 mm. grain size at ready-to-finish. 



« Refers to 1200"^. anneal (1 hr. at temperature). 



83-95 

 56-63 

 73-86 

 70-81 

 65-70 



5 

 106-108 

 85-89 

 56-«5 

 90-90 

 74-78 

 23 



15,000,000 



1769 



0.309 



0.0000198 



28.6 



71 



45-48 



12 

 13-14 

 13-14 

 13-14 

 59-54 



64 



13 



