Product Information

CK Steel Board Series

The composite board consists of an expanded polymer core sandwiched between steel. Light weight was achieved by using an expanded polymer core material and using a steel surface material that is as thin as possible. These boards are ideally suited for manufacturing magnetic blackboards or whiteboards.

Product Categories Processed Products > Metal-Polymer Composite Boards
Main Applications Daily Living > Signage, displays, and ornamentation
Main ingredients Fe-based (iron-based)
Shape Sheets

1. Light Weight
The composite steel and plastic board offers low weight and high rigidity.
2. Extensive Product Selection
Available products include whiteboards, blackboards, and greenboards, for use with either chalk or markers.

For indoor use CK Steel Board Series Specifications Chart

Figure in parentheses indicates quantity in package

Grade Grade Specifications Thickness Standard Size (mm) (weight per sheet)
910×1820 910×2440 1210×2420
CK White board CK-2-WS White/Silver 2mm

(5)6.3 kg per sheet

- -
CK-3-WS 3mm (5)
7.2 kg per sheet
- -
CK-3-WW White on both sides (5)
7.3 kg per sheet
- -
CK White board LITE CK-3L-WW White on both sides (5)
5.3 kg per sheet

7.1 kg per sheet

CK White board WIDE CK-3W-WS White/Silver - -

15.7 kg per sheet

CK Black board CK-3-BS Black/Silver (5)
7.2 kg per sheet
- -
CK Green board CK-3-GRS Green/Silver (5)
6.1 kg per sheet


  • The indicated thicknesses, sizes, weights, and other information may vary slightly depending on the manufacturing lot.
  • Only white, black, and green sides have a protective film.
  • Silver side do not have a protective film.
  • The finish quality on the side without the protective film is not guaranteed.
  • If the surface becomes excessively dirty, we recommend that you gently wipe it clean using a soft cloth that has been soaked in hot water, or water that has a small amount of neutral detergent dissolved in it.
  • Before screen printing on steel boards, consult the ink manufacturer about the printing ink to be used and then be sure to perform an appropriate trial printing.
  • Because steel board materials are made of steel, they will corrode in the same manner as plain steel sheets. Avoid using the product in direct contact with acidic or alkaline substances.
  • If fastening the product directly with screws or bolts, take into consideration thermal expansion of screw/bolt holes by providing loose holes that are 2 to 4 mm larger than the nominal shaft diameter of the screws/bolts.
  • If fastening the product with a sash or frame, take into consideration thermal expansion and the amount of shifting that can occur due to loads and deflection when determining how deep to insert panels to prevent them from falling out.
  • Remove the protective film promptly after installation. Leaving the film installed for long periods could prevent it from peeling off properly.
  • Indicated specifications are subject to change without notice.

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