TYPES OF PROCESS ROUTE AND SURFACE FINISH OF SHEET,PLATE AND STRIP(1) EN 10088-2 : 1995
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Abbreviation (2) |
Type of process route |
Surface finish |
Notes |
| Hot rolled |
1U |
Hot rolled, not heat treated, not descaled. |
Covered with the rolling scale. |
Suitable for products which are to be further worked eg. strip for re-rolling |
| Hot rolled |
1C |
Hot rolled, heat treated, not descaled |
Covered with the rolling scale |
Suitable for parts which will be descaled or machined in subsequent production or for certain heat-resisting applications |
| Hot rolled |
1E |
Hot rolled, heat treated, mechnically descaled. |
Free of scale |
The type of mechanical descaling, eg. coarse grinding or shot blasting, depends on the steel grade and the product, and is left to the manufacturer's discretion, unless otherwise agreed. |
| Hot rolled 1D |
1D |
Hot rolled, heat treated, pickled |
Free of scale |
Usually standard for most steel types to ensure good corrosion resistance; also commen finish for further processing. It is permissible for grinding marks to be present. Not as smooth as 2D or 2B. |
| Cold rolled |
2H |
Work hardened |
Bright |
Cold worked to obtain higher strength level. |
| Cold rolled |
2D |
Cold rolled, heat treated, pickled |
Smooth |
Finish for good ductability, but not as smooth as 2B or 2R |
| Cold rolled |
2B |
Cold rolled, heat pickled, skin passed on bright rolls. |
Smoother than 2D |
Most common finish for most steel types to ensure good corrosion resistance, smoothness and flatness. Also common finish for further processing. Skin passing may be by tension levelling. |
| Cold rolled |
2R |
Cold rolled, bright annealed
(3) |
Smooth, bright, reflective. |
Smoother and brighter than 2B. Also common finish for further processing. |
| Special finishes |
1G or 2G |
Ground
(4) |
See note 5 |
Grade of grit or surface roughness can be specified. Unidirectional texture, not very reflective |
| Special finishes |
1J or 2J |
Brushed
(4) or dull polished (4) |
Smoother than ground. See note 5 |
Grade of brush or polishing belt or surface roughness can be specified. Unidirectional texture, not very reflective. |
| Special finishes |
1K or 2K |
Satin polish
(4) |
See note 5 |
Additional specific requirements to a 'J'-type finish, in order to achieve adequate corrosion resistance for marine and external architectural applications. Transverse Ra<0.5µm with clean cut surface finish. |
| Special finishes |
1P or 2P |
Bright polish
(4) |
See note 5 |
Mechanical polishing. Process or surface roughness can be specified. Non directional finish, reflective with high degree of image clarity. |
