Flame-retardant polyamide compositions with a high glow wire ignition temperature and use thereof

A flame-retardant polyamide composition, comprising:

• 25% to 75% by weight of polyamide having a melting point of not more than 290° C. as component A, wherein the component A comprises polymer mixtures of nylon-6,6 and nylon-6;
• 20% to 40% by weight of fillers and/or reinforcers as component B;
• 5% to 10% by weight of phosphinic salt of the formula (I) as component C
• in which R1 and R2 are ethyl,
• M is Al, Fe, TiOp or Zn,
• m is 2 to 3, and
• p=(4−m)/2;
• 0.05% to 1.5% by weight of a compound selected from the group of the Al, Fe, TiOp and Zn salts of ethylbutylphosphinic acid, of dibutylphosphinic acid, of ethylhexylphosphinic acid, of butylhexylphosphinic acid and/or of dihexylphosphinic acid as component D, wherein p=(4−m) / 2 and m is 2 to 3;
• 0.01% to 0.6% by weight of a phosphonic salt of the formula II as component E
• in which R3 is ethyl,
• Met is Al, Fe, TiOq or Zn,
• n is 2 to 3, and
• q=(4−n)/2;
• 2% to 10% by weight of melamine polyphosphate having an average degree of condensation of 20 to 200 as component F;
• and
• 0.02% to 2% by weight of an inorganic phosphite phosphonate as component G,
• wherein the flame-retardant polyamide composition has a glow wire ignition temperature (GWIT) according to IEC-60695-2-13 of not less than 800 ° C. at thickness 0.75-3 mm.