Industrial files JIS. Code
Chemical composition% heat treatment hardness
C si mn p s cr annealing hardening
45# 0.45 0.4 0.6 0.8 0.04 0.04 720760 slow cooling 740770 water quenchine HRC≥ 40
T12 1.2 1.5 0.2 0.35 0.2 0.35 0.035 0.035 0.2 0.5 750800slow cooling 780820 water quenchine HRC≥ 62

The products manufactured by our factory includes flat file, half-round file, triangular file, round file, square file, aluminum flat file, steel file, assorted file, adamantine file, handle-file, shaping handle-file and so on.