G5/G9

G5/G9

G5/G9 Glass Melamine Grades are ideal for applications that require high electrical insulation, excellent mechanical strength, and superior heat resistance. Composed of a glass cloth base impregnated with melamine resin, these grades offer exceptional dielectric properties and low moisture absorption, making them particularly suitable for high-temperature and high-voltage environments. Their strong, durable structure ensures reliable performance, making G5/G9 grades a preferred choice for demanding applications requiring effective insulation, stability, and durability.

g9 Laminated Sheets
g9 Sheets and Tubes

G5 and G9

What’s the difference?

G5: Known for excellent mechanical strength, electrical insulation, and moderate heat resistance. G5 is commonly used in electrical and mechanical applications where high insulation and structural support are needed, but it has somewhat lower arc resistance than G9.

G9: Similar to G5 in terms of strength and insulation properties, but offers greater arc resistance and higher heat tolerance. This makes G9 better suited for applications exposed to high temperatures and potential arcing, such as high-voltage electrical equipment and industrial power distribution components.

Dimensions:

Sheet:

36″x48″

48″x96″

Cut to size available

Saw Kerf – 0.250″

Thickness:

0.015″-  3.000″

(Additional thicknesses available upon request)

Sanding:

1 or 2 side sanding with tolerance of +/-0.005″

Tube:

ID: 0.375″ – 4.000″

OD: 0.437″-5.000″

Colors:

  • Natural
  • High mechanical strength
  • Excellent electrical insulation
  • Moderate to high heat resistance (higher in G9)
  • Good arc resistance (superior in G9)
  • Low moisture absorption
  • Chemical resistance
  • Stable under high temperatures
  • High-voltage insulators
  • Switchgear components
  • Arc barriers
  • Terminal boards
  • Coil supports
  • Structural spacers
  • Industrial power distribution parts
  • Transformer supports

Technical Data Sheet (TDS)

MIL-I-24768/01

MIL-I-24768/08

G5 and G9 Glass Melamine Grades were developed to provide robust insulation, mechanical strength, and heat resistance for industries requiring materials that perform reliably under demanding conditions. Constructed from high-quality glass cloth impregnated with melamine resin, these grades offer superior dielectric properties, low moisture absorption, and impressive arc resistance, making them ideal for high-voltage and high-temperature applications. Over time, G5 and G9 have become trusted materials in fields such as electrical manufacturing, power distribution, and industrial equipment, where durability and stability are paramount. Today, they are valued for their dependable performance in challenging applications requiring strong insulation, stability, and resistance to heat and arcing.

g9 Tubes

Start your G5/G9 Order









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    FAQs

    Current manufactures NEMA grade G5/G9 products. These materials can be fabricated into tubes, rods, and sheets. They can also be machined into spacers, standoffs, and other parts. We can also design one specific to you based on your unique applications. Whatever your manufacturing or assembling needs, there’s a Current Inc. product that will improve your product for an affordable price. Our laminated sheets, standoffs, tubing, rod and spacers are created with precision in mind. 

    To start an order, go to our Contact page and fill out a form detailing your interests. This will be received by us, and we will coordinate with you to complete the order. Alternatively, give us a call and we will be happy to work with you in that way as well. You can reach our main office at (203) 469-1337.

    Our lead times vary based on the market and on the products that you are interested in, but we typically deliver around 4-6 weeks or less from the order being placed, depending on the material we have in stock. 

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    • Resin Systems:
    • Phenolic
    • Epoxy
    • Melamine