290 



Copper and Copper-base Alloys 



50 100 150 200 250 300 350 400 450 500 

 Temperature, Deg.FflHr. at Temp.) 



Chakt 74. — The effect of temperature on the thermal conductivity 

 of a phosphor bronze (12.4 % tin, 0.40 % phosphorus, balance copper) 

 according to Griffiths and Schoefield.'^^' 



50 100 150 200 250 300 350 400 450 500 

 Temperature, Deg.Hfl Hr.at Temp.) 



Chart 75. — The effect of elevated temperature on the thermal 

 conductivity of a phosphor bronze (10.0 % tin, 2.0 % zinc, 0.15 % 

 phosphorus, balance copper) according to Griffiths and Schoefield.*^^' 



50 100 150 200 250 300 350 400 450 500 

 Temperature, Deg. f; ( IHr. at Temp.) 



Chart 76. — The effect of elevated temperature on the thermal con- 

 ductivity of a phosphor bronze (10.0 % tin, 2.0 % zinc, balance copper) 

 according to Griffiths and Schoefield.'^"' 



50 100 150 200 250 300 350 400 450 500 

 Temperature, Deg.F; ClHr. at Temp.) 



Chart 77. — The effect of elevated temperature on the thermal con- 

 ductivity of a phosphor bronze (5.0% tin, 2.10% zinc, 0.15% phos- 

 phorus, balance copper) according to Griffiths and Schoefield.'-^' 



