Fire resistant, high flow poly(aryl ether sulfone) composition

A polymer composition (C) comprising:

• 50 wt. % or more and below 98 wt. %, based on the total weight of the polymer composition (C), of a poly(aryl ether sulfone) material (M12) which comprises
• from 55 to 100 wt. %, based on the total weight of the poly(aryl ether sulfone) material (M12), of at least one poly(biphenyl ether sulfone) (P1), and
• from 45 to 0 wt. %, based on the total weight of the poly(aryl ether sulfone) material (M12), of at least one poly(aryl ether sulfone) (P2) of which more than 50 wt. % of the recurring units are recurring units (R2) containing at least one ether group (—O—), at least one sulfone group (—SO2—) and at least two arylene groups linked to each other via a secondary, ternary or quaternary carbon atom, and
• 1-25 wt. %, based on the total weight of the polymer composition (C), of a per(halo)fluoropolymer material (M34) which comprises
• from 5 to 95 wt. %, based on the total weight of the per(halo)fluoropolymer material (M34), of at least one per(halo)fluoropolymer (P3) of which at least 2.0 wt. % of the recurring units are recurring units (R3) derived from at least one per(halo)fluoromonomer other than tetrafluoroethylene, and
• from 95 to 5 wt. %, based on the total weight of the per(halo)fluoropolymer material (M34), of at least one polytetrafluoroethylene (P4).