You could try to clean the pads:
Take pads out and either
set on fire with isopropylalcohol
or
heat on stove (outside) for 10 minutes or till smoke stops
Sand lightly.
clean rotor with isopropylalcohol.
reinsert pads
bed-in brake with 10 hard stops
otherwise shimano sinthered/metal pads are quite good.
You could try to clean the pads:
Take pads out and either
set on fire with isopropylalcohol
or
heat on stove (outside) for 10 minutes or till smoke stops
Sand lightly.
clean rotor with isopropylalcohol.
reinsert pads
bed-in brake with 10 hard stops
otherwise shimano sinthered/metal pads are quite good.