For Cold rolled stainless steel the old BS1449 standard has been replaced by two EN Standards:
| Thickness (mm) | Tolerances (+/- mm) for Given Width in mm | Tolerances (+/- mm) for Given Width in mm | Tolerances (+/- mm) for Given Width in mm |
|---|---|---|---|
100 | 1250 | 1500 | |
Under 0.30 | 0.03 | - | - |
0.30 to 0.49 | 0.04 | 0.04 | - |
0.50 to 0.59 | 0.045 | 0.05 | - |
0.60 to 0.79 | 0.05 | 0.05 | - |
0.80 to 0.99 | 0.055 | 0.06 | 0.06 |
1.00 to 1.19 | 0.06 | 0.07 | 0.07 |
1.20 to 1.49 | 0.07 | 0.08 | 0.08 |
1.50 to 1.99 | 0.08 | 0.09 | 0.10 |
2.00 to 2.49 | 0.09 | 0.10 | 0.11 |
2.50 to 2.99 | 0.11 | 0.12 | 0.12 |
3.00 to 3.99 | 0.13 | 0.14 | 0.14 |
| Nominal Length (L) mm | Normal Tolerance mm |
|---|---|
Up to 3000 | 10 |
Over 3000 | 12 |
| Nominal Length (L) mm | Normal Tolerance mm |
|---|---|
Up to 2000 | +5/-0 |
Over 2000 | +0.0025 x L/-0 |
| Thickness (mm) | All Plus Tolerances (mm) for Given Width in (mm) | All Plus Tolerances (mm) for Given Width in (mm) |
|---|---|---|
1000 | 1250 & 1500 | |
Under 1.50 | +1.50 | +2.00 |
1.50 to 2.49 | +2.00 | +2.50 |
2.50 to 3.49 | +3.00 | +3.00 |
3.50 and over | +4.00 | +4.00 |
| BS EN Finish | Old BS Finish | Description |
|---|---|---|
Hot Rolled | ||
1C | 0 | Hot rolled, heat treated, not descaled |
1E | 1 | Hot rolled, heat treated, mechanically descaled |
1D | 1 | Hot rolled, heat treated, pickled |
1U | - | Hot rolled, not heat treated, not descaled |
Cold Rolled | ||
2C | - | Cold rolled, heat treated, not descaled |
2E | - | Cold rolled, heat treated, mechanically descaled |
2D | 2D | Cold rolled, heat treated, pickled |
2B | 2B | Cold rolled, heat treated, pickled, skin passed |
2R | 2A/(BA) | Cold rolled, bright annealed |
2Q | - | Cold rolled, hardened and tempered, scale free |
| BS EN Finish | Old BS Finish | Description | Typical Grit | Typical Ra |
|---|---|---|---|---|
1G or 2G | - | Ground Grit | 120 | 2.50 to 2.00 |
1J or 2J | 3B | Brushed - Unidirectional | 180 | 1.20 to 1.00 |
1J or 2J | 4 | Dull Polished - Unidirectional | 240 | 0.60 |
1K or 2K | 5 | Satin Polished - Unidirectional | 320 | 0.50 max |
1P or 2P | 7 | Bright Polished - Non- Directional with a high degree of image clarity | 600 | 0.10 |
1P or 2P | 8 | Bright Polished - Non- Directional with a high degree of image clarity | 800 | 0.05 |
1M or 2M | - | Patterned | ||
2L | - | Coloured | ||
2W | - | Corrugated | ||
1S or 2S | - | Surface Coated (Metallic coatings such as tin, lead or aluminium |
*NOTE:
Special finishes indicate hot rolled (1) and cold rolled (2) sheets, e.g.: Ground polished hot rolled sheets + 1G/Ground polished cold rolled sheets = 2G.
For further information on stainless steel finishes, please refer to the Righton Blackburns technical datasheet on this subject.
Where multi-certification is required, a combination of EN10088-2, EN10029 or 10051 will appear together with the appropriate ASTM Standards.
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