Calculate the amount of heat required to heat a steel cutter with a mass of 400 g

Calculate the amount of heat required to heat a steel cutter with a mass of 400 g, if during quenching it was heated from a temperature of 20 C to 1320 C.

Initial data: m (weight of the steel cutter) = 400 g; t0 (temperature of the steel cutter before hardening) = 20 ºС; t (end temperature of the tool) = 1320 ºС.

Reference data: C (specific heat capacity of steel) = 500 J / (kg * K).

SI system: m = 400 g = 0.4 kg.

The amount of heat required to heat the steel cutter: Q = C * m * (t – t0).

Let’s make a calculation: Q = 500 * 0.4 * (1320 – 20) = 500 * 0.4 * 1300 = 260,000 J = 260 kJ.

Answer: 260 kJ of heat is needed to heat a steel cutter.