Rigid Laminates
Electrowind is your rigid laminate specialist and stocks a wide variety of sheets in different constructions and sizes. Electrowind is a master fabricator of rigid material and provides custom fabrication solutions that are made to your specification.
Electrowind is your source for rigid laminates. We stock transformer board, pressboard, fibre and and other paper based materials. We have access to Permali and electrical grade pulp based products. Glass reinforced laminate sheets (GPO-3, SG-200, Nema grade G5, G7, G9, G10, G11) to meet your insulation requirements. We also carry high-pressure laminates such as Phenolic (Micarta®, Bakelite) and mica sheets. Arboron, LEXAN®, FORMEX®, Nylon and other plastics round out our product offering.
All of our products are available in various sizes of sheet and molded parts that include tube: rod, channel, angle, dogbone, wedges and stand-off insulators. In addition, Electrowind Fabrication Services has CNC, sawing and die-cutting capabilities to produce machined, punched or formed parts and custom sizes that meet your specific requirements.
For more information on our rigid laminates or to inquire about our fabrication services, contact Electrowind.
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SELECT THE CORRECT RIGID LAMINATE
Using the information below, the selection process begins with determining whether your application is principally mechanical, electrical, chemical or thermal. Identify the most important properties required and then compare these with the main characteristic of the grades listed below. This will assist you in specifying the grade for your project.
Paper Based Products – Usually used for electrical insulation rather than wear properties.
Cotton Based Products – Usually chosen for wear resistance and mechanical strength. A fine weave of cotton is used to ensure clean machinability.
Glass Based Products – Usually selected for low moisture sensitivity, high mechanical strength, superior heat resistance and electrical insulating properties.
If you require further assistance, contact Electrowind.
*Reference guide for Rigid Laminate product line. Many other rigid materials available. Call Electrowind for information.
| NEMA | Characteristics | Application | Resin | Reinforcement |
| X | 130°C Temperature Class. The best composition of a paper based phenolic in that it exhibits excellent mechanical and electrical properties. It is a strong, hard laminate, hot/warm punch, with good tensile, compressive and flexural strengths. MIL-I-24768/12 | Tap changer boards, table tops in fabricating plants, terminal strips, phase barriers, tooling boards, fuse boards, conduit tubes, lead clamps | Phenolic | Paper |
| XP | 130°C Temperature Class. Similar to X but has a plasticizer added. Primarily intended for hot punching when heated between 120 and 140 degrees C. MIL-I-24768/19 | Intricate punched parts requiring moisture resistance and electrical properties between X and XX. | Phenolic | Paper |
| XPC | 130°C Temperature Class. Primarily intended for cold punch or shearing. Has a higher cold flow and flexibility than XP. MIL-I-24768/20 | Thicker punched parts. Bushings, transformer spacers, low voltage insulating washers, backing disks, terminal blocks, cams, coil form insulation bushings. | Phenolic | Paper |
| XX | 130°C Temperature Class. Primarily intended for mechanical applications and is suitable for electrical applications as well. Good machinability, high dielectric strength and moisture resistance. MIL-I-24768/11 PBG | Well suited for a variety of electrical applications and general purpose electronics. Spools, buss bars, high voltage covers, switch boards, terminal strips, phase barriers, lead clamps, conduit tubes | Phenolic | Paper |
| XXX | 130°C Temperature Class. Similar to XX but better electrically due to higher resin content. A dielectric material, mechanically stable, paper-based laminate. Excellent performance in electrical insulating applications. MIL-I-24768/10 | Panel boards, insulating washers, sleeves, switch bases, terminal strips, phase barriers, conduit tubes, lead clamps, fuse boards, tape changer boards. | Phenolic | Paper |
| C | 130°C Temperature Class. An economy grade cotton cloth phenolic used primarily in mechanical applications where electrical insulation is not needed. Superior impact strength, low moisture & water absorption and excellent mechanical stability. Easily machined. MIL-I-24768/16, LP 509 & MIL-P-15035 Type FBM | Gears, pulleys, sheaves, washers, piston rings, spacers, bearings, structural applications | Phenolic | Canvas |
| CE | 130°C Temperature Class. General purpose laminate primarily used for mechanical applications requiring basic dielectric properties or for electrical applications that require a stable structural support. MIL-I-24768/14 Type FBG | Terminal boards, switches, buss bars, motor and generator wedges, wear plates, bearing houses, gears, trunnions, transformer and many other low voltage electrical scenarios | Phenolic | Canvas |
| L | 130°C Temperature Class. Has a very fine weave cloth suitable for intricate design details in complex mechanical parts. Good mechanical properties, machines easily and clean. Recommended for fine punching, threading, close tolerance and machining. MIL-I-24768/15 | Close tolerance punched parts, gears, washers, structural applications, bearings | Phenolic | Linen |
| LE | 130°C Temperature Class. Fine weave cotton cloth laminate with characteristics similar to L, but has greater moisture resistance and improved dimensional stability. Primarily used for mechanical and electrical applications requiring improved machining properties. MIL-I-24768/13 | Bearing retainers and electrical applications other than primary insulation. Gears, trunnions, terminal strips, various punched parts | Phenolic | Linen |
| G-5/G-9 | 130°C Temperature Class. A continuous filament glass cloth with heat resistance melamine resin. High arc and heat resistance, excellent electrical properties even under wet conditions. One of the hardest laminate grades. MIL-I-24768/1 GME | Arc barriers, circuit breakers, structural electrical parts, motor topsticks and wedges, switchgear terminal boards, armature end insulation, fuse insulators | Melamine | Glass |
| G-7 | 220°C Temperature Class. Offers the highest temperature resistance. Self extinguishing with excellent electrical properties under both dry and humid conditions. Excellent dielectric and arc-resistance properties at elevated temperatures. MIL-I-24768/17 Type GSG | Heat resistant insulation, high temperature mechanical applications, connector plate, electric furnace insulation components, circuit breaker arc chutes, bus tube clamps | Silicone | Glass |
| G-10 | 130°C Temperature Class. General purpose glass cloth based laminate with excellent mechanical strength and good electrical properties. Good machining qualities, high flexural, bond and impact strength at room temperatures. Not flame-retardant. | Electrical/mechanical applications in humid areas. Motor and generator wedges, transformer coil supports, terminal boards. | Epoxy | Glass |
| G-11 | 180°C Temperature Class. High temperature version glass cloth based laminate with excellent mechanical strength and electrical properties at elevated temperatures. MIL-I-24768/3 Type GEB | Structural members at elevated temperatures, rotor slot insulation, wedges | Epoxy | Glass |
| FR-4 | 130°C Temperature Class. A woven glass fabric with epoxy resin system. Primarily used in the printed circuit board industry. Flame rated, good punching and electrical properties. MIL-I-24768/27 | Terminal boards, electrical insulation, motor and generator wedges, transformer coil supports, PC boards | Epoxy | Glass |
| G-10 Rods | 130°C Temperature Class. An electrical-grade epoxy resin combined with a glass fabric substrate, cast to a specific size and either formed or ground down to the desired specifications. Excellent resistance and electrical properties under dry and humid conditions. MIL-I-24768/27 | High heat insulators, gaskets, armature barriers, mechanical insulators | Epoxy | Glass |
| G-10 FR-4 Tubes | 130°C Temperature Class. An electrical-grade epoxy resin system combined with a glass fabric substrate and formed into the desired tube specifications. | Heat exchangers, coils and inductors, spacers, stand-offs, antenna masts. | Epoxy | Glass |
| Silicone Bonded Mica | 500°C Temperature Class. Highest temperature thermoset laminate with very good mechanical and electrical properties. | Arc chutes, electric furnace insulation, high temperature appliance components | Silicone | Mica |
| Epoxy Bonded Mica | 180°C Temperature Class. General purpose mica based laminate with excellent electrical properties. Limited mechanical strength versus glass laminates. | Fuse element supports, resistor insulators, dry-type transformer insulation | Epoxy | Mica |
| GPO-1 | 155°C Temperature Class. Economical, general purpose polyester glass laminate with good electrical properties, good physical strength, and moderate heat resistance are required, but where high flame is not. MIL-I-24768/4 | Buss bar supports, buss duct windows, phase barriers, mounting panels, brush holders, collars, wedges, fuse boards, terminal strips. Blocking used in rotating apparatus, dry-type transformers, and large switches | Polyester | Glass |
| GPO-2 | 130°C-155°C Temperature Class. Flame retardant glass polyester laminate that is UL recognized. Good electrical properties, physical properties and heat resistance. MIL-I-24768/5 | High amperage mounting panels, switch bases, phase barriers, terminal strips, arc shoot components, fuse boards, buss bar supports, buss duct windows | Polyester | Glass |
| GPO-3 | 130°C-155°C Temperature Class. Performs well in electrical applications that require high arc and carbon track resistance, physical strength, and moderate heat resistance. MIL-I-24768/6 | Phase and end barriers, insulating supports, buss bar supports, terminal strips, fuse boards, mounting panels in switchgear and other types of electrical apparatus | Polyester | Glass |
| GPO Angles & Channel | 130°C Temperature Class. A wide range of glass polyester standard angles and channels for structural applications. | Buss bar supports, fuse supports, structural members | Polyester | Glass |
| Standoff Insulators | 130°C Temperature Class. A complete line of standoff insulators with a wide range of dimensions. | Buss bar supports, fuse supports, coil supports | Polyester | Glass |
| Rod, Dogbone, Shapes | 155°C-220°C Temperature Class. A wide variety of standard pultruded rods and shapes. | Supports, coil spacers, terminal strips | -- | -- |
| SG-200, HST II, N220 | 220°C Temperature Class. High temperature polyester laminates that exhibit excellent retention of electrical and mechanical properties at elevated temperatures. | Ideal for high temperature applications. Layer and core insulation for dry-type transformers, phase barriers, coil supports, transformer winding combs. | Polyester | Glass |
| LST | 130°C Temperature Class. Used for outdoor applications using a U.V. resistant grade of GPO-3. | Buss duct windows, phase barriers, outdoor buss supports | Polyester | Glass |
| Glastherm, MPI | 250°C Temperature Class. High temperature boards designed for mold platen insulation applications. | Mold platen thermal insulation | Polyester | Glass |
- ROCHLING GLASTIC COMPOSITES
- ISOVOLTA GROUP
- PROTECTOLITE INC.
- NORPLEX-MICARTA
- VON ROLL
- ATLAS FIBRE
- SAINT GOBAIN (ALLIED SIGNAL)
- ACCURATE PLASTICS
Electrowind supplies a large variety of products and has access to hundred’s of suppliers product lines. We are also experts at sourcing products in the industries that we serve. Give us an opportunity to serve you and we will not disappoint.
