Ryertex is a family of fiber reinforced plastic composites used as electrical insulation or to replace metal in wear applications where high speed, load, and temperatures are involved, or where there tends to be a loss of lubrication.  Ryertex is used in industrial applications including wear plates and fiber bearings in steel and aluminum mills, copper processing, paper and lumber mills, oil and gas, mining, military, aerospace, rail/locomotive, off-road and construction equipment.

The Ryertex line includes all NEMA  grades with common substrate/resin combinations including glass epoxy, glass phenolic, and multiple combinations of canvas phenolic.  Other substrates include paper, linen and aramid fiber while melamine and silicone can also be used for the resin systems.  One of the most common grades that we see includes the fiberglass composite FR4 due to its high strength and thermal properties. Ryertex C is known in many places by the generic name “Micarta” and may be the most common wear material used in industrial settings.

While Ryertex is a globally recognized brand name, there are a number of other names in the marketplace that are also thermoset laminate composites. These include: Micarta, Bakelite, “Phenolic”, Resiten, Garolite, Acculam, Lamitex, Gatke, Scan Pac, Spauldite, Phenolex, Textolite, Tufnol, Laminex, Schwartz, Current, and Synthane. WS Hampshire can cross reference your requirements to the corresponding Ryertex offering.

Thermoset laminates were first developed by Leo Baekeland in 1907 when he introduced Bakelite, a non-flammable thermoset utilizing phenolic resin with a paper substrate. This material has been used in everything from engine parts to jewelry to electronics. Products that were originally made from Bakelite include telephone mouth and ear pieces, buttons, and frying pan handles.

Ryertex was first introduced in the 1930’s as a metal replacement. Demand grew shortly thereafter as World War II put a strain on the nation’s metal supply and Ryertex was quickly seen as a viable option in a wide variety of industrial applications.

Today, Ryertex is a trade name of WS Hampshire who has built an outstanding reputation for producing high quality, custom fabricated parts for use in many industrial applications including bearings, bushings, and other wear parts.

 

Request Information    View Ryertex Product Catalog

 

  • Sheet Only
    Grade 223 C CE CG HDA HDM L LE G3 G5 G7 G9 FR4 G11 S/T X
    Applications Mechanical grade, piston & packing rings, pump valve, doctor blades, stave and rudder bearings for marine industry. Mechanical grade, gears, pinions, spacers, structural, bearings, bushings, wear parts, electrical insulation. Mechanical/Electrical grade, small gears, pinions, radio parts, marine switch board panels, electrical insulation. Mechanical grade, bearings, bushings, wear parts where self lubrication and low coefficient of friction is necessary. Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Moly has been added to provide self lubricating properties. Mechanical grade, fine tooth gears, radio parts, terminal boards where tight tolerance and improved surface finish are required. Electrical/mechanical grade, marine relay bases, terminal bases & strips, radio parts, high humidity applications, electrical insulation Mechanical grade, high temperature, low moisture absorption, gaskets, seals, structural, industrial wear parts Electrical/Mechanical grade, switch board panels, arc barriers, circuit breaker parts, structural & electrical parts, electrical insulation Electrical grade, class H insulation, heating/appliance insulation, electrical insulation Electrical/Mechanical Grade, marine switch board panels, structural parts, electrical insulation Electrical/mechanical grade, high humidity applications, power generation and transmission, electrical insulation, industrial wear parts Electrical /Mechanical grade, rotor slot insulation, structural members at elevated temperatures, UL listed, electrical insulation Mechanical grade, high temperature, self lubricating bearings, bushings, wear parts. Mechanical grade, terminal boards, structural parts, switch bases, washers, panels, electrical insulation
    Substrate Canvas Canvas Canvas Canvas Canvas Canvas Linen Linen Fiberglass Fiberglass Fiberglass Fiberglass Fiberglass Fiberglass Aramid Paper
    Resin Phenolic Phenolic Phenolic Phenolic Phenolic Phenolic Phenolic Phenolic Phenolic Melamine Silicone Melamine Epoxy Epoxy Phenolic Phenolic
    Modifier – – – Graphite Alumina Molybdenum Disulfide – – – – – – – – Molybdenum Disulfide –
    Mil Spec MIL-P-18324D, ADM2 MILI-24768/16FBM MIL-I-24768/14 – – – MIL-I-24768/15 MIL-I-24768/13FBE MIL-I-24768/18 MIL-I-24768/8GMG MIL-I-24768/18 MIL-I-24768/1GME MIL-I-24768/27 Type GEE-F MIL-I-24768/3 Type GEB – MIL-I-24768/12PBM
    NEMA – C CE – – – L LE G3 G5 G7 G9 FR4 G11 – X
    Form Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet Sheet
    Property Test Units
    Physical properties Specific Gravity ASTM D792 – 1.44 1.37 1.37 1.40 1.42 1.40 1.34 1.34 1.80 1.90 1.88 1.90 1.85 1.80 1.54 1.40
    Rockwell Hardness ASTM D785 .250″ build up M Scale 105 100 100 90 95 80 100 100 110 115 100 115 – 112 95 90
    Moisture Absorbtion ASTM D570 Condition A % 1.20 3.50 2.00 2.20 0.06 0.08 2.30 – 2.00 0.50 0.19 0.50 0.10 0.20 – –
    ASTM D570 Condition D1-24/23 % – – – – – – – 1.9 – – – – – – 1.94 0.58
    IEC 60893-2/8.2 Condition A mg – – – – – – – – – – – – 8.3 – – –
    Flexural Strength ASTM D790 Condition A, LW/CW psi 18,000 18,000/17,000 17,500/15,000 19,000/15,000 20,200/13,600 16,200/12,700 24,500/18,500 22,000/16,000 55,000/50,000 70,500/63,200 24,300/21,700 70,500/63,200 65,000/52,000 68,100/61,300 36,700/17,500 34,000/28,000
    ASTM D790 Condition E-1/150: T-150, LW/CW psi – – – – – – – – – – – – – 40,000 29,200/15,500 –
    IEC 60893-2.5.1 Condition A, LW/CW – – – – – – – – – – – – – 480/390 – – –
    Flextural Modulus ASTM D790 Condition A, LW/CW kpsi – 1,600/1,500 1,600/1,500 1,200/1,000 1,358/1,034 937/818 1,700/1,300 1,600/1,200 1,800/1,400 2,000/1,700 – 2,000/1,700 2,900/2,600 3,000/2,700 – 1,900/1,400
    Tensile Strength ASTM D638 Condition A, LW/CW psi 12,000 12,000/9,700 11,000/9,000 10,000/7,000 11,400/11,300 10,200/6,300 14,000/10,000 13,000/9,000 42,000/34,000 50,000/35,000 – 50,000/35,000 40,000/32,000 43,000/37,000 25,600/9,700 17,000/13,000
    Flextural Modulus ASTM D790 Condition A, LW/CW kpsi – 1,600/1,500 1,600/1,500 1,200/1,000 1,358/1,034 937/818 1,700/1,300 1,600/1,200 1,800/1,400 2,000/1,700 – 2,000/1,700 2,900/2,600 3,000/2,700 – 1,900/1,400
    Izod Impact Strength ASTM D256 Condition A, LW/CW ft-lb/in – – – – – – – – – – – – – – – –
    ASTM D256 Condition E-48/50, LW/CW ft-lb/in 2.00/1.2 3.10/2.70 1.70/1.5 1.7/1.4 6.36/2.83 6.00/2.89 1.70/1.35 1.35/1.10 12.0/11.0 16.50/12.50 17.00/11.50 16.50/12.50 7.90/7.30 12.0/9.0 22.90/7.30 .82/.76
    IEC 60893-2.5.4.3 Condition A, LW/CW – – – – – – – – – – – – – 58/55 – – –
    Charpy Impact Strength IEC 60893-2.5.4.2 Condition A LW/CW kJ/m2 – – – – – – – – – – – – 63/50 – – –
    Compressive Strength ASTM D695 Condition A, Flatwise psi 38,000 34,000 34,000 38,000 36,500 34,000 38,000 36,000 76,000 85,000 – 85,000 66,000 72,500 40,700 35,000
    Compressive Modulus ASTMD695 Condition A kpsi – – – – – – – – – – – – – – – –
    ASTM D229 Condition A ASTM D229 Condition A lb 1,700 2,500 1,700 1,800 2,300 2,100 2,000 1,900 1,500 1,900 750 1,900 2,300 1,900 2,400 1,000
    ASTM D229 Condition D-48/50 lb – 2,300 1,700 – 2,100 2,000 – – – – – – – – – –
    Shear Strength ASTM D732 Condition A, Perpendicular psi 13,000 14,000 14,000 13,000 13,900 12,200 13,500 13,500 18,000 18,000 – 18,000 21,500 22,000 – 15,000
    Thermal Properties Temperature Index UL Bulletin 746b Electrical/Mechanical °C 125 115/125 115/125 125 125 125 115/125 125 140/170 140 170/220 140 130/140 170/180 165 130/130
    Tg by DMA Condition A °C – – – – – – – – – – – – 130 180 – –
    Coefficient of Thermal Expansion IPC-TM 650-2.4.24 X-axis/Y-axis “/”°Cx10-6 – 20.0/22.0 20/22 18/24 19.5/27.6 26.4/39.4 18.0/19.0 18.0/19.1 15.0/18.0 15.0/18.0 – 15.0/18.0 10.0/13.0 13/15 27.0/39.8 13.0/17.0
    Flammability Rating UL Bulliten 94 Condition A Class HB HB HB HB HB HB HB HB HB – – – – HB – HB
    Flammability Vertical IEC60893-2/7.2 Condition A Class – – – – – – – – – V-0 V-0 V-0 V-0 – – –
    Electrical Properties Breakdown Voltage ASTM D149 Condition A kVolts – 20 40 – – – 45 50 55 70 55 70 66 60 – 40
    ASTM D149 Condition D-48/50 kVolts – 5 3 – – – 2 5 40 65 32 65 65 55 – –
    ASTM D149 Condition D-336/50 kVolts – – – – – – – – – – – – – – – –
    IEC 60893-2/6.1 Condition A kV – – – – – – – – – – – – 65 – – –
    Electric Strength ASTM D149 Condition A Volts/mil – 400 550 – – – 575 625 600 540 350 540 630 700 – 600
    ASTM D149 Condition D-48/50 Volts/mil – 150 300 – – – 450 500 580 550 – 550 670 720 – –
    IEC 60893-2/6.1 Condition A – – – – – – – – – – – – – 25 – – –
    Insulation Resistance IEC 60893-2/6.3 Condition E-24/50:D-24/23 MΩ – – – – – – – – – – – – 3.33×1013 – – –
    Arc Resistance ASTM D495 Condition A sec – 15 15 – – – 15 15 100 185 200 185 130 120 – 90
    Comparative Tracking Index ASTM D3638 Volts/mil – 155 – – – – 170 170 150 600 – 600 600 150 – –
    Dissipation Factor @ 1 MHz ASTM D150 Condition A – – – – – – – – – – – 0.018 – – – – –
    ASTM D150 Condition D-24/23 – – – – – – – 0.07 0.065 – 7.03 0.045 7.03 0.032 0.02 – –
    Relative Permittivity @ 1 MHz Condition A – – – – – – – – – – – 4.55 – – – – –
    Condition D-24/23 – – – – – – – 5.8 5.5 – – 4.67 – 4.8 – – –
    Condition D-48/50 – – – – – – – – – – – – – – 4.8 – –

     

    This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. Data supplied is “typical values” and not to be considered “specification values.” In order to assure that the material’s performance is adequate for a specific application, it is recommended that customers independantly verify characteristics of interest.

     

  • Tube Only
    Grade C CG HDA HDM LE G3 G5 G7 G9 G10 S/T
    Applications Mechanical grade, gears, pinions, spacers, structural, bearings, bushings, wear parts, electrical insulation. Mechanical grade, bearings, bushings, wear parts where self lubrication and low coefficient of friction is necessary. Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Heavy industrial applications for bearings, bushings and wear parts that encounter high energy loads as the material possesses improved impact resistance and does not fatigue from repeated shock loads. Moly has been added to provide self lubricating properties. Electrical/mechanical grade, marine relay bases, terminlal bases & strips, radio parts, high humidity applications, electrical insulation Mechanical grade, high temperature, low moisture absorbtion, gaskets, seals, structural, industrial wear parts Electrical/Mechanical grade, switch board panels, arc barriers, circuit breaker parts, structural & electrical parts, electrical insulation Electrical grade, class H insulation, heating/appliance insulation, electrical insulation Electrical/Mechanical Grade, marine switch board panels, structural parts, electrical insulation Electrical/Mechanical grade, terminal boards, high humidity applications, UL listed a 65M38 unclad, electrical insulation, foil lined material used in cryogenic insulation Mechanical grade, high temperature, self lubricating bearings, bushings, wear parts.
    Substrate Canvas Canvas Canvas Canvas Linen Fiberglass Fiberglass Fiberglass Fiberglass Fiberglass Aramid
    Resin Phenolic Phenolic Phenolic Phenolic Epoxy Phenolic Melamine Silicone Melamine Epoxy Phenolic
    Modifier – Graphite Alumina Molybdenum Disulfide – – – – – – Molybdenum Disulfide
    Mil Spec MILI-24768/16FBM – – – MIL-I-24768/13FBE MIL-I-24768/18 MIL-I-24768/8GMG MIL-I-24768/18 MIL-I-24768/1GME MIL-I-24768-2 –
    NEMA C – – – LE G3 G5 G7 G9 G10 –
    Form Tube Tube Tube Tube Tube Tube Tube Tube Tube Tube Tube
    Property Test Units
    Physical properties Specific Gravity ASTM D792 – 1.30 1.28 1.33 1.34 1.33 1.80 1.88 1.93 1.95 1.80 1.35
    Rockwell Hardness ASTM D785 .250″ build up M Scale 90 90 74 80 110 105 120 95 115 110 70
    Moisture Absorbtion ASTM D570 Condition A % 2.00 2.10 1.10 1.30 – – – – – – 1.10
    ASTM D570 Condition D1-24/23 % – – – – 1.15 0.2 0.8 0.1 1.0 0.14 –
    IEC 60893-2/8.2 Condition A mg – – – – – – – – – – –
    Flexural Strength ASTM D790 Condition A, LW/CW psi – – – – – – – – – – 11,000/8,700
    ASTM D790 Condition E-1/150: T-150, LW/CW psi – – – – – – – – – – –
    IEC 60893-2.5.1 Condition A, LW/CW – – – – – – – – – – – –
    Flextural Modulus ASTM D790 Condition A, LW/CW kpsi – – – – – – – – – – 750/500
    Tensile Strength ASTM D638 Condition A, LW/CW psi 7,700 7,900 4,100 5,500 10,000 38,500 27,000 23,500 26,500 39,500 7,400
    Izod Impact Strength ASTM D256 Condition A, LW/CW ft-lb/in – – – – – – – – – – –
    ASTM D256 Condition E-48/50, LW/CW ft-lb/in – – – – – – – – – – –
    IEC 60893-2.5.4.3 Condition A, LW/CW – – – – – – – – – – – –
    Charpy Impact Strength IEC 60893-2.5.4.2 Condition A LW/CW kJ/m2 – – – – – – – – – – –
    Compressive Strength ASTM D695 Condition A, Flatwise psi 25,500 24,000 22,000 18,500 30,000 38,000 26,500 12,000 33,500 42,500 20,000/30,000
    Compressive Modulus ASTMD695 Condition A kpsi 350 415 360 350 380 850 1,000 290 1,000 1,100 600/440
    Bonding Strength ASTM D229 Condition A lb – – – – – – – – – – –
    ASTM D229 Condition D-48/50 lb – – – – – – – – – – –
    Shear Strength ASTM D732 Condition A, Perpendicular psi – – – – – – – – – –
    Thermal Properties Temperature Index UL Bulletin 746b Electrical/Mechanical °C 140/140 140 140 140 135 180/160 150 170/220 150 200 165
    Tg by DMA Condition A °C – – – – – – – – – ≥170 –
    Coefficient of Thermal Expansion IPC-TM 650-2.4.24 X-axis/Y-axis “/”°Cx10-6 – – – – – – – – – – –
    Flammability Rating UL Bulliten 94 Condition A Class HB HB HB HB HB HB V-0 V-0 V-0 HB –
    Flammability Vertical IEC60893-2/7.2 Condition A Class – – – – – – – – – – –
    Electrical Properties Breakdown Voltage ASTM D149 Condition A kVolts – – – – – – – – 55 60 –
    ASTM D149 Condition D-48/50 kVolts – – – – – – – – 30 65 –
    ASTM D149 Condition D-336/50 kVolts – – – – – – – – 50 – –
    IEC 60893-2/6.1 Condition A kV – – – – – – – – – – –
    Electric Strength ASTM D149 Condition A Volts/mil 135 – – – 285 400 315 185 350 400 –
    ASTM D149 Condition D-48/50 Volts/mil – – – – 220 350 315 120 340 380 –
    IEC 60893-2/6.1 Condition A – – – – – – – – – – – –
    Insulation Resistance IEC 60893-2/6.3 Condition E-24/50:D-24/23 MΩ – – – – – – – – – – –
    Arc Resistance ASTM D495 Condition A sec – – – – – – – – – – –
    Comparative Tracking Index ASTM D3638 Volts/mil – – – – – – – – – – –
    Dissipation Factor @ 1 MHz ASTM D150 Condition A – – – – – – – – – – 0.024 –
    ASTM D150 Condition D-24/23 – – – – – – – – – – 0.034 –
    Relative Permittivity @ 1 MHz Condition A – – – – – – – – – – 4.39 –
    Condition D-24/23 – – – – – – – – – – – –
    Condition D-48/50 – – – – – – – – – – 4.46 –

     

    This data, while believed to be accurate and based on reliable analytical methods, is for informational purposes only. Data supplied is “typical values” and not to be considered “specification values.” In order to assure that the material’s performance is adequate for a specific application, it is recommended that customers independantly verify characteristics of interest.