5. A large block of steel is placed inside of a furnace set at 1980°C. If it is assumed that the surface temperature of the steel instantly takes on the temperature of the furnace and remains constant, what is the time required for the steel to reach 1000°C at a depth of 10 cm? Given: Ksteel = 63.9W/m k, Csteel = 434 J/kg k, Psteel = 7832 kg/m³, Osteel = 18.8 x 10-6 m²/s (State all assumptions and Show All Work)

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5. A large block of steel is placed inside of a furnace set at 1980°C. If it is assumed
that the surface temperature of the steel instantly takes on the temperature of the
furnace and remains constant, what is the time required for the steel to reach
1000°C at a depth of 10 cm? Given: Ksteel = 63.9W/m k, Csteel = 434 J/kg k,
Psteel = 7832 kg/m³, Osteel = 18.8 x 10-6 m²/s
(State all assumptions and Show All Work)
Transcribed Image Text:5. A large block of steel is placed inside of a furnace set at 1980°C. If it is assumed that the surface temperature of the steel instantly takes on the temperature of the furnace and remains constant, what is the time required for the steel to reach 1000°C at a depth of 10 cm? Given: Ksteel = 63.9W/m k, Csteel = 434 J/kg k, Psteel = 7832 kg/m³, Osteel = 18.8 x 10-6 m²/s (State all assumptions and Show All Work)
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