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What's in an Engine &
Why? |
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Gray cast iron is a low
tensile iron alloy (Fe & C). It's industrial grade name is SAE 2500 and
consist of ferrite and pearlite structure. The iron contains 3.2
- 3.5 (wt%) carbon (C), 2.20 (wt%) Silicon (Si), and .8 (wt%) Manganese (Mn)
and the remaining composition Iron (Fe). Thermal conductivity is 46.0 W/m-K°
or 26.6 BTU/ft-h-F°. The material chosen for
the engine must be strong and resist wear. Gray cast iron has a low tensile
strength at 173 MPa or 25 ksi, but has a high resistance to wear. In
addition, gray iron has great vibration damping, which occurs in all engines. |
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Last Updated: |
Contact the professor at: stoebe@u.washington.edu
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