A polyamide molding material based on partly crystalline but simultaneously transparent copolyamides based predominantly on aliphatic monomers for production of transparent or colorable moldings with high flexibility, high notched impact strength (Charpy), low water absorption and excellent chemical resistance, comprising - 40 to 100% by weight of at least one partly crystalline, transparent copolyamide with a glass transition temperature (Tg) of at most 80°C and a melting temperature of at least 150°C, and an enthalpy of fusion of at least 20 J/g, preferably of at least 30 J/g, where the glass transition temperature (Tg), the melting point (T m) and the heat of fusion are determined to ISO 11357-1/2, and where the differential scanning calorimetry is performed with a heating rate of 20 K/min, formed from - at least two different diamines selected from the group consisting of linear and/or branched-chain aliphatic diamines having 9 to 14 carbon atoms and cycloaliphatic diamines, especially having 6 to 36 carbon atoms, where the concentration of cycloaliphatic diamine is 10 to at most 40 mol% and the concentration of aliphatic diamine at least 60 mol%, based in each case on the total diamine content, wherein the cycloaliphatic diamine is selected from the group consisting of bis(4-amino-3-methylcyclohexyl)methane (MACM), 2,2-bis(4-amino-3-methylcyclohexyl)propane, bis(4-amino-3-ethylcyclohexyl)methane (EACM), bis(4-amino-3,5-dimethylcyclohexyl)methane (TMACM), isophoronediamine (5-amino-1,3,3-trimethylcyclohexanemethanamine), 1,3-diaminocyclohexane, 1,3-diaminomethylcyclohexane, 2,5- or 2,6-bis-(aminomethyl)norbornane, 2,5- or 2,6-diaminonorbornane, and - from one or more aliphatic dicarboxylic acids, especially having 6 to 36 carbon atoms, - 0 to 60% by weight of at least one further polymer selected from the group consisting of amorphous or partly crystalline homo- or copolyamides, polyether ester amides, polyether amides, polyester amides or mixtures thereof, - 0 to 10% by weight of customary additives selected from the group consisting of UV stabilizers, heat stabilizers, free-radical scavengers and/or processing aids, inclusion inhibitors, lubricants, mold release aids, plasticizers, functional additives for influencing optical properties, especially refractive index, impact modifiers, nanoscale fillers and/or additives, optical brighteners, dyes or mixtures thereof, where the sum of components, and adds up to 100% by weight. - 40 to 100% by weight of at least one partly crystalline, transparent copolyamide with a glass transition temperature (Tg) of at most 80°C and a melting temperature of at least 150°C, and an enthalpy of fusion of at least 20 J/g, preferably of at least 30 J/g, where the glass transition temperature (Tg), the melting point (T m) and the heat of fusion are determined to ISO 11357-1/2, and where the differential scanning calorimetry is performed with a heating rate of 20 K/min, formed from - at least two different diamines selected from the group consisting of linear and/or branched-chain aliphatic diamines having 9 to 14 carbon atoms and cycloaliphatic diamines, especially having 6 to 36 carbon atoms, where the concentration of cycloaliphatic diamine is 10 to at most 40 mol% and the concentration of aliphatic diamine at least 60 mol%, based in each case on the total diamine content, wherein the cycloaliphatic diamine is selected from the group consisting of bis(4-amino-3-methylcyclohexyl)methane (MACM), 2,2-bis(4-amino-3-methylcyclohexyl)propane, bis(4-amino-3-ethylcyclohexyl)methane (EACM), bis(4-amino-3,5-dimethylcyclohexyl)methane (TMACM), isophoronediamine (5-amino-1,3,3-trimethylcyclohexanemethanamine), 1,3-diaminocyclohexane, 1,3-diaminomethylcyclohexane, 2,5- or 2,6-bis-(aminomethyl)norbornane, 2,5- or 2,6-diaminonorbornane, and - from one or more aliphatic dicarboxylic acids, especially having 6 to 36 carbon atoms, - at least two different diamines selected from the group consisting of linear and/or branched-chain aliphatic diamines having 9 to 14 carbon atoms and cycloaliphatic diamines, especially having 6 to 36 carbon atoms, where the concentration of cycloaliphatic diamine is 10 to at most 40 mol% and the concentration of aliphatic diamine at least 60 mol%, based in each case on the total diamine content, wherein the cycloaliphatic diamine is selected from the group consisting of bis(4-amino-3-methylcyclohexyl)methane (MACM), 2,2-bis(4-amino-3-methylcyclohexyl)propane, bis(4-amino-3-ethylcyclohexyl)methane (EACM), bis(4-amino-3,5-dimethylcyclohexyl)methane (TMACM), isophoronediamine (5-amino-1,3,3-trimethylcyclohexanemethanamine), 1,3-diaminocyclohexane, 1,3-diaminomethylcyclohexane, 2,5- or 2,6-bis-(aminomethyl)norbornane, 2,5- or 2,6-diaminonorbornane, and - from one or more aliphatic dicarboxylic acids, especially having 6 to 36 carbon atoms, - 0 to 60% by weight of at least one further polymer selected from the group consisting of amorphous or partly crystalline homo- or copolyamides, polyether ester amides, polyether amides, polyester amides or mixtures thereof, - 0 to 10% by weight of customary additives selected from the group consisting of UV stabilizers, heat stabilizers, free-radical scavengers and/or processing aids, inclusion inhibitors, lubricants, mold release aids, plasticizers, functional additives for influencing optical properties, especially refractive index, impact modifiers, nanoscale fillers and/or additives, optical brighteners, dyes or mixtures thereof,