Effect of Alloying Elements and Ceramic Coating on the Surface Temperature of an Aluminum Piston in a Diesel Engine

Table 3

Material properties for piston materials, rings, and coating materials.

Material	Specific heat (J/kg°C)	Density (kg/m^3)	Thermal expansion (1/°C)	Thermal conductivity (W/m^2°C)	Poisson’s ratio	Young’s modulus (GPa)
AlSi	910	2700	21	155	0.33	90
Steel	500	7870	12.2	79	0.3	200
NiCrAl	764	7870	12	16.1	0.27	90
MgZrO3	650	5600	8	0.8	0.2	46
Rings	460	7200	12	16	0.3	200