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Steel Composite Material (SCM)

Durable, versatile SCM: magnetic receptive, printable, flame retardant, self-supporting.

Steel composite material has galvanized steel skins bonded to an polyethylene core, which is ideal for signage, interior design, and display applications. SCM is durable, magnetic receptive, and offers a dry erase and print surface for those looking for extra versatility. Our steel composite is also available in standard 4' x 8' sizes and 3mm thickness.

Ask about our Piedmont Sign Grade® SteelPOLY® steel composite material today!

  • Fabrication Support

    Cut-to-Size, Routing

  • Local

    Inventory Stocking

  • National

    Inventory Access

Your Branch: Baltimore/Washington Zip code: 21075 |

Product Overview

Performance Characteristics:

  • Easy To Fabricate
  • Good Dimensional Stability
  • Weatherable
  • Impact Resistant
  • Low Temperature
  • Strong and Stiff
  • Printable
  • Abrasion Resistant
  • Moisture Resistant
  • Patterns and Finishes
  • Typical Properties of Steel Composite Material (SCM)

    Common Properties

    • Common Brand Names SteelPOLY®
    • Typical Thickness Size 3 mm
    • Typical Lengths 96, 144 in
    • Typical Widths 48, 60 in
    • Friendly Names Steel Composite, Hybrid Steel
    • Common Profiles Sheet

    Physical Properties

    • Density 1.2g/cm³
    • Water Absorption 0.3%
    • Moisture Absorption at Equilibrium 0.7%
    • Linear Mold Shrinkage 0.005cm/cm
    • Melt Flow 10g/10 min

    Mechanical Properties

    • Hardness, Rockwell R 100HRR
    • Tensile Strength, Ultimate 85MPa
    • Tensile Strength, Yield 65MPa
    • Elongation at Break 50%
    • Elongation at Yield 5%
    • Modulus of Elasticity 2000MPa
    • Flexural Yield Strength 70MPa
    • Flexural Modulus 2100MPa
    • Compressive Yield Strength 80MPa
    • Bearing Yield Strength 75MPa
    • Shear Strength 50MPa
    • Izod Impact, Notched 15J/m
    • Izod Impact, Unnotched 25J/m
    • Gardner Impact 30J
    • Falling Dart Impact 40J
    • Instrumented Impact Total Energy 35J

    Thermal Properties

    • CTE, linear 50 - 100µm/m-°C
    • CTE, linear, Transverse to Flow 50 - 100µm/m-°C
    • Deflection Temperature at 0.46 MPa (66 psi) 120 - 160°C
    • Deflection Temperature at 1.8 MPa (264 psi) 70 - 100°C
    • Vicat Softening Point 200 - 250°C
    • Flammability, UL94 V0 - V2
    • Max Continuous Operating Temperature 150 - 200°F
    • Minimum Operating Temperature - 20°F
    • Thermal Conductivity 0.15 - 0.25W/m-K

    Literature and Data Sheets

    • Piedmont Sign Grade SteelPOLY Piedmont Plastics
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    Piedmont Plastics is your premier source for steel composite material, also known as SCM. Our steel composite is a proven structural composite material featuring two external steel skins thermally bonded to a polyethylene core. This combination creates a strong, durable, and aesthetically pleasing material perfect for a variety of demanding applications. Whether you need a solution for signage, interior design, or any other application requiring a magnetic receptive surface, our steel composite material is engineered to meet your needs.

    Key Benefits of Steel Composite Panels

    1. Strength and Durability: The galvanized steel skins provide exceptional strength and impact resistance, ensuring longevity in various applications.

    2. Magnetic Receptiveness: One side of the material is optimized for dry-erase use, making it ideal for magnetic boards and other similar applications.

    3. Printable Surface: The opposite side offers a superior print surface, allowing for high-quality graphics and designs.

    4. Flame Retardance: Our Steel Composite Material is designed to be flame retardant, providing an added layer of safety and protection in applications where fire resistance is crucial.

    5. Self-Supporting: The stiffness of the material allows it to maintain its form without additional support, making it ideal for various structural uses.

    Steel Composite Construction

    Exterior Steel Skins: The outside layers of SCM are made from galvanized steel. This provides exceptional resistance to corrosion, enhances structural integrity, and offers a sleek, professional appearance.

    Polyethylene Core: Sandwiched between the steel skins is a core made from low-density polyethylene (LDPE). This material is known for its lightweight properties, excellent impact resistance, and energy absorbency, making it both sturdy and resilient.

    Common Applications

    Steel Composite Material is versatile and suitable for a wide range of applications, including:

    • Point of Sale/Point of Purchase (POS/POP) Displays: Ideal for creating attractive and durable displays that grab customer attention.

    • Menu Boards: Perfect for restaurants and cafes, offering a professional look that is easy to update.

    • Interior and Exterior Signage: Suitable for both indoor and outdoor signs, providing a durable and weather-resistant solution.

    • Interior Design: Adds a modern and functional touch to interior spaces, including wall panels, whiteboard architecture, and decorative elements.

    • Real Estate Signage: Durable and weather-resistant, making it perfect for real estate signs that need to withstand outdoor conditions.

    • Ceiling and Wall Panels: Enhances both the aesthetic and functional aspects of interiors with its strength and clean appearance.

    An Expert is just around the corner.

    With over 100 years of combined product knowledge and industry experience, we are confident our plastics experts can help you find a solution for your application.

    Steel Composite Specifications and Sizes

    Piedmont Plastics distributes standard-size steel composite panels. You can also have your SCM cut to size to meet your exact specifications. Custom sizes, thicknesses, and colors are available upon request. Our steel composite material is available in the following specifications:

    Specification Data
    Panel Thickness 0.354" (3mm)
    Weight 1.3 lb/ft²
    Skin Material Galvanized Steel
    Skin Thickness 0.012" (0.30mm)
    Core Material Low-Density Polyethylene (LDPE)
    Sheet Size 4’ x 8’

    Piedmont Sign Grade® SteelPOLY®

    To show our commitment to the signage industry, Piedmont Plastics developed our very own steel composite material known as Piedmont Sign Grade (PSG®) SteelPOLY. This high-performance steel composite material was engineered specifically for signage applications, and features galvanized steel skins thermally bonded to a low-density polyethylene (LDPE) core, combining strength, durability, and excellent magnetic receptiveness. Available in standard sheet sizes of 4’x8’ with a 3mm thickness, Piedmont Sign Grade SteelPOLY is the go-to choice for robust and versatile signage solutions.

    Order Steel Composite Sheet Today!

    Ready to elevate your projects with our Steel Composite Material? Contact us today to learn more about how our SCM can meet your specific needs.

    Contact Us

    Talk to An Expert In
    Baltimore/Washington

    Zip code: 21075 |

    7045 Troy Hill Drive

    301-881-7900

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