Warton metals future hf 6337 2 fast flow halide free no clean cored solder warton metals future hf 18swg warton metals future hf 6337 2 fast flow halide free no clean cored solder is a high purity solder containing a halide free modified rosin flux ideal for applications where a products long term reliability is dependent on the corrosion potential of the flux warton metals future hf 6337 fast flow 2 flux solder wire 18swg 122mm 500g