SURFACE TECHNOLOGY
Stainless Steel Reference Chart
| British Standard |
European Standard |
303 S31
|
1.4305 |
304 S11
|
1.4307 |
304 S31
|
1.4301 |
316 S11
|
1.4404 |
316 S31
|
1.4401 |
| 316 TI |
1.4571 |
320 S31
|
1.4571 |
|
|
| British Standard |
European Standard |
321 S31
|
1.4541 |
| 409 S19 |
1.4512 |
416 S21
|
1.4005 |
430 S17
|
1.4016 |
431 S29
|
1.4057 |
| 17-4PH |
1.4542 |
| F51 |
1.4462 |
|
Surface Finishes
| BS |
EN |
Description |
| I |
IE |
Hot rolled, softened mechanically descaled |
| I |
ID |
Hot rolled,softened,pickled |
| 2D |
2D |
Cold rolled,heat treated,pickled |
| 2B |
2B |
Cold rolled, heat treated, pickled skin passed on bright rolls |
| BA |
2R |
Cold rolled, Bright annealed |
Correlation between grit values, transverse Ra values in microns and the new abbreviations according to BS EN 10088
| Grit Finish |
Ra
Microns |
BS EN 10088 |
Description |
Old Description |
| 120 |
1.0 - 2.0 |
2G |
Ground |
3A |
| 180 |
0.6 - 1.2 |
2J |
Dull Polished or Brushed |
3B or 4 |
| 240 |
0.5 - 1.0 |
2J |
Dull Polished or Brushed |
3B or 4 |
| 280 |
0.4 - 0.8 |
2J |
Dull Polished or Brushed |
3B or 4 |
240S
Si - Carbide |
0.15 - 0.4 |
2K |
Satin Polish |
5 |
|
