ASTM

EN

DIN

OPERATION TYPE

SURFACE FINISH

DESCRIPTION

2B

2B

2B

h/llc

Cold drawn, annealed, matte surface, satin finish (rough)

Smoother than 2D

The most common finish for most types of steel to provide good corrosion resistance, smoothness and flatness. Also common surface for further processing. Stretching or straightening can be done during re-rolling

SB

3

2G

o/IV

Cold drawn, annealed, matte surface, satin finish (rough)

Stoned

Grinding fineness or surface roughness can be determined. Unidirectional texture, not very reflective.

4N

6

2J

P/V

Cold drawn, annealed, matte surface, satin finish (fine)

Softer than stoned

Brush grade or polishing band or surface roughness can be specified. Unidirectional texture, not very reflective

BA

BA

2R

m/lld

Cold drawn, annealed, bright surface

Soft, shiny, reflective

Smoother and brighter than 2D. Also common surface for further processing.

8K

8

2P

–

Polished mirror glossy surface

Mirror shiny

Mechanical polishing. Process or surface roughness may be specified. Non-directional surface, high image clarity reflective.