For Cold rolled stainless steel the old BS1449 standard has been replaced by two EN Standards:
EN10088-2 Replaces BS1449-Part 2: 1983
EN10059 - Covers Heat Resisting Grades
EN10259 & Now ISO 9445: Tolerances for COLD Rolled material
Material Certification
Where multi-certification is required, a combination of EN10088-2, EN10029 or 10051 will appear together with the appropriate ASTM Standards.
Finishes According to BS EN 10088-2 / 10028-7
*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 more information on stainless steel finishes please refer to the AAlco technical datasheet on this subject.
BS EN Finish | Old BS Finish | Special Finishes - Description | Typical Grit | Typical Ra |
1G or 2G | - | Ground Grit | 120 | 2.5 to 2.0 |
1J or 2J | 3B | Brushed - Unidirectional | 180 | 1.2 to 1.0 |
1J or 2J | 4 | Dull Polished - Unidirectional | 240 | 0.6 |
1K or 2K | 5 | Satin Polished - Unidirectional | 320 | 0.5 Max |
1P or 2P | 7 | Bright Polished - Non- Directional with a high degree of image clarity | 600 | 0.1 |
1P or 2P | 8 | Mirror Finish - Non-Directional with a very 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 | | |