Surface criteria/Classifications Aluminium
| Surface class | Definition. Profiles with: |
Handling and areas of use | Viewing distance | Recommended alloy |
| 1 | Extremely high surface demands No scratches, marks or obvious structural ribbing may be seen on the visible surface of the profile. Can only be obtained from material extruded in surface class 2 which, thereafter, is treated chemically or machanically and finally anodised.A visible surface all the way around cannot be obtained with this surface class. Exception: ground surface. |
Super quality Individual handling and inspection at all stages. Packing instructions with specified packing materials/methods shall be issued in consultation with the customer. Max. supplied lengths specifically agreed with customer.Radio/TV, light fittings, picture frames and ornaments. |
Ca 0,5-0,6 m | 6060 6063 |
| 2 | Very high surface demands No scratches, marks or obvious structural ribbing may be seen on the visible surface of the profile that should be surface treated as surface class 1 above.A visible surface all the way around cannot be obtained with this surface class. Exception: ground surface. As a rule, profiles should be anodised. |
Very high coating/anodising quality Individual handling and inspection at all stages. Packing instructions with specified packing materials/methods shall be issued in consultation with the customer. Max. supplied lengths specifically agreed with customer.Radio/TV, light fittings, ornaments, exclusive furniture, kitchens and bathrooms. |
ca 1m | 6060 6063 |
| 3 | High surface demands No scratches, marks or obvious structural ribbing may be seen on the visible surface of the profile. Graphite and other damage from the table is allowable on visible surfaces. Damage/marks that disappear with anodising can be accepted on visible surfaces.As a rule, profiles should be anodised. On other surfaces, as for surface class 4. |
High coating/anodising quality Packing instructions with specified packing materials/methods shall be issued in consultation with the customer. Max. supplied lengths specifically agreed with customer.Furniture, lamps, shop fittings, windows, doors. |
ca 2m | 6060 6063 |
| 4 | Normal surface demands No obvious structural scratches or other damage to the profile should be visible. |
Normal quality Packing instructions shall be issued.Fine mechanical parts, cooling flanges, building systems (apart from windows and doors) balconies, awnings, railings, ladders. Standard profiles. |
ca 3m | 6060 6063 6005A 6082 6101 |
| 5 | Insignificant or no surface demands No obvious handling scratches or other damage should be visible on the profiles.Blistering and fracturing are not permissible. |
Construction quality Standard profiles (stock profiles at wholesaler stage) Parts for coarse mechanical processing. Floor profiles and on components where there is no visible surface whatsoever. |
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