Pressure vessel

A pressure vessel comprising:

• a hollow body comprising a thermoplastic matrix and 10 and 65 volume % of endless fibers, based on total volume of the endless fibers and the thermoplastic matrix of the hollow body, embedded in the thermoplastic matrix, wherein
• the endless fibers are selected from the group consisting of glass fibers, carbon fibers and combinations thereof, and wherein
• the thermoplastic matrix comprises one or more polyamides containing one or more aliphatic monomeric units, wherein the one or more polyamides are selected from the group consisting of PA610, PA612 as well as blends and copolyamides thereof, and wherein
• the one or more polyamides have a CH2-ratio of at least 5.5 and less than 10, calculated by
• (i) identifying the number of different aliphatic monomeric units in the one or more polyamides;
• (ii) determining the number of CH2 groups per aliphatic monomeric unit for each of these different aliphatic monomeric units;
• (iii) calculating the sum of the so determined numbers of CH2 groups;
• and
• (iv) dividing said sum by the number of different aliphatic monomeric units in the one or more polyamides;
• taking into account only the aliphatic monomeric units present in the one or more polyamides in an amount of at least 10 wt % with respect to the total weight of the one or more polyamides, and wherein
• the pressure vessel has a burst pressure of at least 25 bar as measured according to the hydrostatic pressure burst test described in ECE R110.