The specific heat of brass at 25 degrees Celsius is 0.380 joules per gram per degree Celsius. This is much lower than water's specific heat of 4.186 joules per gram per degree Celsius.
Specific heat is the amount of heat needed to raise the temperature of one unit of mass by one degree Celsius. The formula mass times the change in temperature divided by the heat added gives the value of the specific heat of a material as long as no phase changes (e.g. going from a liquid to a gas) occur. Copper has a similar specific heat to brass, so they both require about the same amount of energy to raise by one degree Celsius. Gold has a specific heat of 0.129 which is very low.