FR4 Rigid Epoxy Glassfiber Laminated Sheet

Short Description:

  • Thickness: 0.3mm-80mm
  • Dimension: 1020*1220mm 1020*2020mm 1220*2040mm
  • Color: Light Green,Black,White
  • Customization: Processing based on Drawings
  • Product Detail

    Product Tags

    Product Description

    This product was laminated by the high temperature and high pressure with electronic glassfiber cloth impregnated with brominated epoxy resin.It with high mechanical properties,dielectric properties and flame retardant properties,it also with good heat resistance and moisture resistance;

    FR-4 is a code of a grade of flame-resistant materials, which means a material specification that a resin material must be able to extinguish by itself after burning. It is not a material name, but a material grade. The name FR4 comes from the NEMA grading system where the FRstands for fire retardant, compliant with the UL94V-0 standard. Therefore, general PCB circuit boards, There are many types of FR-4 grade materials used, but most of them are composite materials made of Tera-Function epoxy resin with filler and glass fiber.

    Compliance With Standards

    In accordance with GB/T 1303.4-2009 electrical thermosetting resin industrial hard laminates - Part 4: epoxy resin hard laminates, IEC 60893-3-2-2011 insulating materials - electrical thermosetting resin industrial hard laminates - Part 3-2 of the individual material specification EPGC202.


    1.High mechanical properties;
    2.High dielectric properties;
    3.Good Mechinability
    4.Good moisture resistance;
    5.Good heat resistance;
    6.Temperature resistance:Grade B
    7.Flame retardant property:UL94 V-0



    This product is mainly used as the structure parts for Motor and electrical equipment,including all kinds of switchelectric equipmentFPC reinforcement platecarbon film printed circuit boardscomputer drilling padmould and smelting equipment(PCB test flame;and also suitable under wet environment and transformer oil.

    Main Performance Index

    1 Density g/cm³ 1.8-2.0
    2 Water absorption Rate % ≤0.5
    3 Vertical bending strength MPa ≥340
    4 Vertical compression strength MPa ≥350
    5 Parallel impact strength (charpy type-gap) KJ/m² ≥37
    6 Parallel shear strength Mpa ≥34
    7 Tensile strength MPa ≥300
    8 Vertical electric strength
    (in oil of 90℃±2℃)
    1mm KV/mm ≥14.2
    2mm ≥11.8
    3mm ≥10.2
    9 Parallel breakdown voltage(in oil of 90℃±2℃) KV ≥40
    10 Dielectric dissiption factor(50Hz) - ≤0.04
    11 Insulation Resistance Normal ≥5.0×1012
    After soaking  for 24hours ≥5.0×1010
    12 Combustibility(UL-94) Level V-0

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