Brass with 70 wt.% copper, 30% Zn - heat capacity and heat conductivity for 300-1200 C

Feb 24, 2004 2 Replies
A

I need the following data - heat capacity and heat conductivity for the brass with 70 wt.% copper, 30% Zn. The temperature range -



300-1200 grad C. Thank you in advance.

Alexey Shubin Senior Technologist, Ekaterinburg, Russia


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Dear Mr. Shubin,

Brass 70Cu-30Zn (cartridge brass)

Physical properties:

coefficient of thermal expansion linear, cold rolled stock:19.9 um/m.K (11.1 uin./in.F) at 20 to 300 degree C. Equation for 20 to 300 degree C: Lt=Lo(1+(17.75t+0.00653t^2)x10^-6) where t is temperature difference from 20 degree C.

specific heat

375 J/kg.K (0.09 Btu/lb.F) at 20 degree C

thermal conductivity

120 W/m.K (70 Btu/ft.h.F) at 20 degree C

for your specific range of temperature, I think you only need to extrapolate or interpolate those data above...

Hope it will help...

Best regards,

abhie Metallurgist, Bontang, Indonesia

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