NON COATED COPPER ALLOY, WITH A CROSS-SECTIONAL DIMENSION LESS THAN 6mm. FOR RESISTANCE WELDING ELECTRODES, SOLDER GUN TIPS AND MIG CONTACT TIPS. DISPERSION STRENGTHENED COPPER. HAS AN ALUMINA CONTENT OF 0.60 PERCENT BY WT. CONSISTS OF A PURE COPPER MATRIX CONTAINING FINELY DISPERSED SUB-MICROSCOPIC PARTICLES OF ALUMINIUM, WHICH ACT AS A BARRIER TO DISLOCATION MOVEMENT.

GIR 1 TERMS OF HEADING 7408 COPPER WIRE. GIR 6 TERMS OF 1 DASH S/HEADING OF COPPER ALLOYS. TERMS OF 2 DASH S/HEADING O/THAN OF COPPER-ZINC BASE ALLOYS (BRASS) , OF COPPER-NICKEL BASE ALLOYS (CUPRO-NICKEL) OR COPPER-NICKEL-ZINC BASE ALLOYS (NICKEL SILVER). CHAPTER NOTE (b) AND (f) TO CHAPTER 74 REFERS.