Variation of maximum temperature in a mass element at radial position r. The radius r is the final position of the mass element after sintering of the body has finished. a) Chondrule dominated material with olivine composition. Solid line: sinter algorithm according to Helle, rheological constants from Table 1. Dotted line: sinter algorithm according to Helle, rheological constants from Table 2. Long dashed line: sinter algorithm according to Chaklader, rheological constants as in Henke et al. (2012b). Short dashed line: sinter algorithm according to Chaklader, rheological constants from Table 2. b) Chondrule dominated material, sinter algorithm according to Helle. Solid line: enstatite composition. Dashed line: olivine composition. c) Matrix dominated material, sinter algorithm according to Helle (solid line). For comparison, the dashed line corresponds to a model with chondrule-dominated material. d) Evolution of porosity φ with central temperature T_c. Solid line: chondrule-dominated material. Dashed line: matrix-dominated material. The horizontal dashed lines in images a) to c) indicate the transition temperatures between different petrologic types according to McSween et al. (1988) and the solidus temperatures of the Fe, Ni-FeS complex and the chondritic silicate-mixture.