430 stainless steel coils have the following states. Different states have different resistance to dirt and corrosion.
NO.1, 1D, 2D, 2B, N0.4, HL, BA, Mirror, and various other surface treatment states. The 1D surface has a discontinuous granular shape, also known as a matte surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2D is a slightly glossy silver-white coil. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling.
2B is silvery white and has better gloss and flatness than 2D surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + quenching and tempering rolling.
The surface of BA has excellent gloss and high reflectivity, just like a mirror surface. Processing technology: hot rolling + annealing shot peening pickling + cold rolling + annealing pickling + surface polishing + temper rolling.
No.3 has better glossiness and rough texture on the surface. Processing technology: Polishing and quenching and tempering rolling for 2D products or 2B with 100120 abrasive materials (JISR6002).
No.4 has better gloss and fine lines on the surface. Processing technology: Polishing and quenching and tempering rolling for 2D products or 2B products with 150180 abrasive materials (JISR6002).
HL is silvery gray with hairline streaks. Processing technology: Polish 2D or 2B products with abrasive materials of appropriate particle size to make the surface continuous grinding lines.
