G5/G9 Glass Melamine | Flame-Resistant Phenolic Sheet

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G5/G9 Plastic Rods

20 SKUs

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19 G5/G9 SKUs in stock · Same-day shipping on stocked sizes

Rods

20 sizes · 20 SKUs

All rods stocked in 48" lengths · cut-to-length on request

Short Description	Color	Diameter	Length	Stock	Price
G9 - 2" dia x 48" Natural Rod	Natural	-	-	In stock45	$479.74per rod
G9 - 0.062" dia x 48" Natural Rod	Natural	0.062″	48″	In stock233	$13.40per rod
G9 - 0.093" dia x 48" Natural Rod	Natural	0.093″	48″	In stock379	$11.76per rod
G9 - 0.125" dia x 48" Natural Rod	Natural	0.125″	48″	In stock136	$11.90per rod
G9 - 0.156" dia x 48" Natural Rod	Natural	0.156″	48″	In stock88	$12.17per rod
G9 - 0.187" dia x 48" Natural Rod	Natural	0.187″	48″	In stock148	$13.53per rod
G9 - 0.25" dia x 48" Natural Rod	Natural	0.250″	48″	In stock53	$15.98per rod
G9 - 0.312" dia x 48" Natural Rod	Natural	0.312″	48″	In stock319	$18.70per rod
G9 - 0.375" dia x 48" Natural Rod	Natural	0.375″	48″	In stock317	$22.85per rod
G9 - 0.437" dia x 48" Natural Rod	Natural	0.437″	48″	In stock75	$32.10per rod

Showing 1 to 10 of 20 SKUs

G5/G9 glass melamine is a woven-glass-fabric/melamine-resin thermoset laminate classified under NEMA LI-1 Grade G-9. It belongs to the glass melamine family — composites manufactured by impregnating woven glass cloth with melamine resin and curing under heat and pressure into rigid phenolic sheet, rod, and tube stock. The melamine resin system gives G5/G9 outstanding arc and track resistance, distinguishing it from epoxy-based grades and making it particularly effective in high-voltage switchgear and motor insulation applications where surface tracking is a concern.

G5/G9 delivers 70,000 psi tensile strength, 55,000 psi flexural strength, and 39,000 psi compressive strength with a Rockwell M115 hardness. The material is rated UL 94 V-0 — self-extinguishing under vertical flame exposure — with water absorption of only 0.60% over 24 hours. Maximum continuous service temperature is 248°F (120°C). These properties make G5/G9 a dependable choice for motor slot liners, bus bar insulation, switchgear panels, and other high-voltage components where both arc resistance and flame retardance are required.

Standards. G5/G9 meets NEMA LI-1 Grade G-9 and carries a UL 94 V-0 flammability classification. ASTM D709 governs test methods for this laminated thermosetting material. The melamine resin's inherent arc and tracking resistance is a core performance differentiator versus epoxy grades.

Related materials. For applications requiring higher service temperatures, glass epoxy grades G-11 and FR-5 operate up to 180°C. Where extreme heat resistance is paramount, glass silicone Grade G-7 extends continuous service to 220°C. For applications where melamine's arc resistance is the primary requirement but at this temperature range, G5/G9 from Ready Plastics provides a proven, purpose-built solution. See the glass melamine family page for the full offering.

Glass Melamine G-9

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