Dimensions
Product shapes
Patterned plates can be supplied as cut lengths or coils, with mill edges or sheared edges. Here “patterned plate” means both patterned coils and patterned cut lengths. Generally, “patterned plate” is often referred to as a “floor plate” due to its most common use.
Typical dimensions of the patterns
- Height 1–2 mm
- Other dimensions are 25 x 50 mm for chequer pattern plates and 10 x 30 mm for tear pattern plates.
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Chequer pattern
DIN 59220
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Tear 1 pattern
DIN 59220
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Tear 2 pattern
ASTM A786-05(2009) Pattern No. 4
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Dimensional ranges for patterned plate coils and cut lengths with mill edges
| Strength class ReH = 235-250 MPa |
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| Thickness mm |
Width mm |
Length m |
| 3.00 – 3.49 |
1200 – 1535 |
2 – 12 |
| 3.50 – 3.99 |
1200 – 1660 |
2 – 12 |
| 4.00 – 4.74 |
1200 – 1710 |
2 – 12 |
| 4.75 – 10.00 |
1100 – 1860 |
2 – 12 |
| 10.01 – 13.00 |
1000 – 1585 |
2 – 12 |
| Strength class ReH ≈ 355 MPa |
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| Thickness mm |
Width mm |
Length m |
| 3.50 – 3.99 |
1200 – 1335 |
2 – 12 |
| 4.00 – 4.74 |
1200 – 1430 |
2 – 12 |
| 4.75 – 4.99 |
1100 – 1530 |
2 – 12 |
| 5.00 – 5.99 |
1100 – 1660 |
2 – 12 |
| 6.00 – 10.00 |
1000 – 1660 |
2 – 12 |
| 10.01 – 13.00 |
1000 – 1410 |
2 – 12 |
For patterned plates with sheared edges the maximum width is reduced by 40 mm compared with the standard value of the corresponding thickness.
The inside diameter of patterned coils is usually 760 mm, but coils with an inside diameter of 610 mm.
Weight of patterned plates and patterns
In order to determine the theoretical weight of a patterned plate, the weight of the basic plate is first calculated using the density of 7.85 kg/ dm3. The pattern weight is then added to the basic plate weight: approximately 2 kg/m2 for tear pattern 1, and 4 kg/m2 for tear pattern 2 and for the chequer patterned plate.
Tolerances
Dimensional and shape tolerances
The dimensional and shape tolerances are in compliance with the following standards: DIN 59220, SEL 014E:1979, ASTM A 786 and SFS 5500.
Download dimensional and shape tolerances for hot-rolled steels
Surface quality
Patterned plates are delivered in as-rolled condition.
Properties
Selection criteria for patterned plates and standard equivalents
Patterned plates for walking surfaces provide: strength, lightness, practicality, durability, good appearance and safe grip on the surface. The strength of structures made from patterned plate is based on the thickness of the basic plate. This means that the pattern is not taken into account when calculating the strength.
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The chequer pattern is recommended for use under dry conditions due its better wear resistance. Standard equivalents: Chequer DIN 59220 |
| Chequer |
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The properties of tear patterned plates are best suited for outdoor applications where the surface may be susceptible to freezing. Tear patterned surfaces allow water to drain away more easily, in addition to which cleaning is also easier.
Standard equivalents:
- Tear 1 pattern DIN 59220
- Tear 2 pattern ASTM A 786 Pattern No. 4
The tear 2 pattern is the best choice for applications in which formability is required as the flangeability of this pattern is equally good in all plate directions. |
| Tear 1 |
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| Tear 2 |
Mechanical properties and materials testing
The mechanical properties of patterned plates that are in compliance with ASTM A 786 meet the requirements set for the steel grade in question. The elongation requirements for patterned plates in accordance with DIN 59220 must be checked, when necessary, from the supplier.
The materials testing of patterned plates is carried out in accordance with the respective material and patterned plate standards.
Prefabrication services
Cutting
Wide flats from plate and strip that are ready for assembly and dimensionally accurate speed up the manufacture of steel structures and assembly, and avoid wasting material. Thanks to the extensive range available, steel grades best suited for the application in question can be used.
Read more about cutting wide flats from plates and strip
Order & delivery
Inspection document
A test report EN 10204-2.2 or an inspection certificate EN 10204-3.1 is provided in accordance with the order requirements.
Download information about inspection documents
Size of order and delivery weight
The smallest order is one patterned coil or the equivalent of one coil in the same width of cut lengths. Larger orders must be multiples of this minimum amount. Cut lengths of patterned plate are supplied in bundles. Bundles always contain cut lengths of the same thickness, width and length. The tolerance on delivery weight of patterned coils and cut lengths is ±10 %, with a minimum of -2 tonnes and maximum of +3 tonnes.
The recommended weight/width ranges for patterned coils and cut lengths are 8–12 kg/mm of width and 17–20 kg/mm of width. The weight/width range is calculated by dividing the weight of a ready-made coil in kilograms by its width in millimetres. The weight/width range of cut lengths is calculated from the original coil before it is cut into cut lengths.
General delivery information for hot-rolled steels
General delivery information for hot rolled steels can be found from documents Markings and packing, Ultra-sonic testing and General terms of sale.
Download information about markings and packing
Download information about ultrasonic testing
Download general conditions of sale