The test 0.42% Cu Hi-B steel (/% : 0.10C

3.25Si

0.16Mn

0.019P

0.011S

0.021 Als

0.42Cu ) is melted by induction furnace at laboratory and cast to 15 kg ingot

broken down to 60 mm billet then hot-rolled to 3.95 mm plate. The tested specimen is 0.48 mm sheet cold-rolled by 88% reduction and annealed at 830 °C

850 °C and 870 °C for 3 min

5 min and 7 min. The metallographic examination and texture analysis of annealed specimens are carried out. The test results show that the average grain size of specimen annealed at 850 °C for 5 min is 14.49 μm

with deviation angle 15° the content of {111}＜112＞、{111}＜110＞ etc favourable textures is more

while the content of {001}＜110＞、{110}＜112＞ etc unfavourable textures is less. The optimized primary recrystallization annealed process of the test cold-rolled sheet is at 850 °C for 5 min.