Phenolic Sheet, Rod, and Tube

Phenolic is a strong, rigid, and heat-resistant thermoset plastic made by impregnating layers of fabric or paper with phenolic resin. It offers high mechanical strength, excellent dimensional stability, and outstanding electrical insulation properties. Common trade names include Micarta®, Bakelite®, and Garolite®.

Typical Properties (General Grade)

Property	Typical Value
Specific Gravity	1.35 – 1.45
Flexural Strength	20,000 – 30,000 psi
Compressive Strength	25,000 – 40,000 psi
Tensile Strength	10,000 – 18,000 psi
Impact Resistance (Izod)	0.4 – 1.2 ft-lbs/in
Maximum Operating Temp	120°C – 160°C (248°F – 320°F)
Dielectric Strength	300 – 500 V/mil (dry)
Water Absorption (24h)	~1.0 – 2.5%
Machinability	Excellent – easily drilled, milled, turned

Available Types

Canvas-Based Phenolic (C): Good mechanical strength; machinable; cost-effective
Linen-Based Phenolic (L): Fine weave for better finish; excellent for small, precise parts
Paper-Based Phenolic (P): Best electrical insulation; lower mechanical strength
Glass-Cloth-Based (G-10 / FR4): Superior strength, flame resistance, high-voltage insulation

Common Forms

Sheet: Thicknesses from 1/32" to 2" or more
Rod: Diameters from 1/4" to 4"+, lengths up to 48"
Tube: Various IDs/ODs from 1/2" to 8"+, often custom cut

Extensive Application List

Electrical insulation (terminal boards, arc barriers)
Tooling plates, jig components, and fixtures
Motor and generator end plates
Bearing retainers, thrust washers, and bushings
Control panels and switchgear barriers
Radio, microwave, and RF shielding structures
Gear blanks and pulleys (low-speed)
Vacuum table plates and router beds
Knife handles and firearm grips (linen/canvas grades)
Model engineering and R/C aircraft bases
Transformer insulation and structural supports
High-voltage coil supports
Elevator equipment insulation blocks
Flame-retardant enclosures (FR4 glass-reinforced grade)
Replacement parts for worn metal in non-lubricated settings

Key Benefits

Excellent electrical insulator (dry and humid conditions)
Strong, rigid, and machinable
Heat and arc resistant
Dimensionally stable under load
Noise and vibration dampening in mechanical assemblies

We offer cut-to-size service, large quantity pricing, and can combine orders for different shapes and sizes. Contact us for bulk deals or technical questions!