Stainless Steel
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General Information
EN Standards for Stainless Steel C.R. Sheet
For Cold rolled stainless steel the old BS1449 standard has been replaced by two EN Standards: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.
Thickness Tolerances - EN10259
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Thickness (mm)
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Tols (+/-mm) for given width in mm
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Tols (+/-mm) for given width in mm
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Tols (+/-mm) for given width in mm
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1000
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1250
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1500
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Under 0.30
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0.03
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-
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-
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0.30 to 0.49
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0.04
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0.04
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-
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0.50 to 0.59
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0.045
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0.05
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-
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0.6 to 0.79
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0.05
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0.05
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-
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0.8 to 0.99
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0.055
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0.06
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0.06
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1.0 to 1.19
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0.06
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0.07
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0.07
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1.2 to 1.49
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0.07
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0.08
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0.08
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1.5 to 1.99
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0.08
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0.09
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0.10
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2.0 to 2.49
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0.09
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0.10
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0.11
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2.5 to 2.99
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0.11
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0.12
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0.12
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3.0 to 3.99
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0.13
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0.14
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0.14
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Flatness Tolerances
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Nominal Length (L) (mm)
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Normal Tolerance (mm)
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Up to 3000
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10
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Over 3000
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12
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Length Tolerances
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Nominal Length (L) (mm)
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Normal Tolerance (mm)
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Up to 2000
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+5 / -0
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Over 2000
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+0.0025 x L / -0
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Width Tolerances
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Thickness (mm)
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All Plus Tols (mm) for Given Width in (mm)
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All Plus Tols (mm) for Given Width in (mm)
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1000
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1250 & 1500
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Under 1.5
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+1.5
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+2.0
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1.5 to 2.49
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+2.0
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+2.5
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2.5 to 3.49
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+3.0
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+3.0
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3.5 and Over
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+4.0
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+4.0
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Finishes According to BS EN 10088-2 / 10028-7
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BS EN Finish
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Old BS Finish
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Description
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Hot Rolled
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1C
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0
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Hot rolled, heat treated, not descaled
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1E
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1
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Hot rolled, heat treated, mechanically descaled
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1D
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1
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Hot Rolled, heat treated, pickled
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1U
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-
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Hot rolled, not heat treayed, not descaled
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Cold Rolled
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2C
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-
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Cold rolled, heat treated, not descaled
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2E
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-
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Cold rolled, heat treated, mechanically descaled
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2D
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2D
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Cold Rolled, heat treated, pickled
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2B
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2B
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Cold Rolled, heat treated, pickled, skin passed
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2R
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2A / (BA)
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Cold Rolled bright annealed
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2Q
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-
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Cold Rolled, hardened & tempered, scale free
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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.
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BS EN Finish
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Old BS Finish
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Special Finishes - Description
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Typical Grit
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Typical Ra
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1G or 2G
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-
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Ground Grit
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120
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2.5 to 2.0
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1J or 2J
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3B
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Brushed - Unidirectional
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180
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1.2 to 1.0
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1J or 2J
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4
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Dull Polished - Unidirectional
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240
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0.6
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1K or 2K
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5
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Satin Polished - Unidirectional
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320
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0.5 Max
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1P or 2P
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7
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Bright Polished - Non- Directional with a high degree of image clarity
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600
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0.1
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1P or 2P
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8
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Mirror Finish - Non-Directional with a very high degree of image clarity
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800
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0.05
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1M or 2M
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-
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Patterned
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2L
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-
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Coloured
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2W
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-
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Corrugated
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1S or 2S
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-
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Surface Coated (Metallic coatings such as tin, lead or aluminium
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