Model type and surface finish for sheet and belt 1) DIN EN 10 088-2

Abbreviation 2) Name as per DIN 17440 Model type Surface finish Remarks
Warm rolled
1U Warm rolled, not further heat treated, not descaled Covered with roll scale Suitable for products that are further processed e.g. band for re-rolling.
1C I c Warm rolled, heat treated, not descaled Covered with roll scale Suitable for parts that are subsequently decaled or processed or for certain heat-resistant applications.
1E II a Warm rolled, heat treated, mechanically descaled Scale free The type of mechanical descaling, e.g. raw grinding or blasting, depends on the type of steel and the shape of the product and is up to the manufacturer unless otherwise agreed upon.
1D II a Warm rolled, heat treated, blued Scale free The common standard for most types of steel to ensure good corrosion resistance. Also the usual design for further processing. Not as smooth as 2D or 2B.
Cold rolled
2H III a Strain-hardened Blank Worked cold to achieve higher levels of stiffness.
2C III s Cold rolled, heat treated, not descaled Smooth with scale from heat treatment Suitable for parts that are subsequently decaled or processed or for certain heat-resistant applications.
2D III b Cold rolled, heat treated, blued Smooth Design for good working but not as smooth as 2B or 2R.
2B III c Cold rolled, heat treated, blued, cold re-rolled Smoother than 2D Most frequent design for most types of steel to ensure good corrosion resistance, smoothness and evenness. Also the common design for further processing. Rerolling can be done by straightening by stretching.
2R III d Cold rolled, bright-annealed 3) Smooth, blank, reflective Smoother and blanker than 2B. Also the usual design for further processing.
Special designs
1G/2G IV Sanded 4) See foot note 5 Abrasive grit of surface roughness can be determined. Unidirectional texture, not very reflective.
2J Brush-finished 4) or matt polished 4) Smoother than sanded. See foot note 5 Type of brush or polishing band or surface roughness can be determined. Unidirectional texture, not very reflective.
2M Patterned Design to be agreed Second surface smooth