COMPOSITION

According to the invention, a high-temperature-resistant material composition with improved mechanical properties consists of partly crystalline thermoplastics at least composed of the following components: 100 parts by weight of a component (A) consisting of a polyamide 66, 0.1 to 150 parts by weight of a component (B), based on component (A), consisting of a polyamide 6, 0.1 to 150 parts by weight of a component (C), based on component (A), consisting of a syndiotactic polystyrene homo- or -copolymer, 0.1 to 50 parts by weight of a component (D), based on component (A), consisting of a grafted syndiotactic polystyrene homo- or -copolymer, 0.1 to 50 parts by weight of a component (E), based on component (A), consisting of an impact modifier, 0.1 to 100 parts by weight of a component (F), based on component (A), consisting of a first carbon black, 0.1 to 100 parts by weight of a component (G), based on component (A), consisting of a second carbon black, 0.1 to 100 parts by weight of a component (H), based on component (A), consisting of an inorganic filler, components (F) and (H) each being reacted separately in a first step with a portion of component (A), and component (G) with component (E), before, in a second step, all mixtures thus generated are reacted further with components (B), (C) and (D) and the remainder of component (A), and the material composition has a melt flow ratio to DIN ISO 1133 of greater than 8 measured at 280°C/5 kg, an impact resistance to ISO 179 without fracture, a coefficient of longitudinal expansion to DIN 53752 at 23 to 80°C of less than 80 x 10- 5