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CNC Light Green FR-4 Epoxy Laminated Sheet Machined Parts

CNC Light Green FR-4 Epoxy Laminated Sheet Machined Parts

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    FR-4 Epoxy Laminated Sheet Machined Parts


    CNC Epoxy Laminated Sheet Machined Parts

  • Material
    Epoxy Resin And Glass Fiber Cloth
  • Color
    Yellow And Light Green
  • Thickness
  • Diemension
  • CTI
  • Temp. Index
  • Fire Resistance
    UL 94-V0
  • Minimum Order Quantity
  • Price
    3-4 USD
  • Packaging Details
    carton and pallet
  • Delivery Time
    3-5 DAYS
  • Payment Terms
    L/C, T/T, Western Union
  • Supply Ability
    3600 TONS PER YEAR

CNC Light Green FR-4 Epoxy Laminated Sheet Machined Parts

Light green epoxy laminated sheet machined parts by CNC


What is FR-4 material ?

Fiber glass epoxy FR-4 sheet is a NEMA grade designation for glass-reinforced epoxy laminate material , it is laminated sheet under high temp.
Fiber glass epoxy FR-4 sheet is a composite material composed of fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing).
"FR" stands for flame retardant, and denotes that the material complies with UL94V-0.
FR-4 sheet is a popular and versatile high-pressure thermal plastic laminate grade with very nice strength .
With very very low and near zero water absorption, fiber glass epoxy sheet is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating
qualities in both dry and humid conditions. These attributes, along with good fabrication characteristics, lend utility to this
grade for a wide variety of electrical and mechanical applications.
FR-4 with so many advantages as below :

* High mechanical & electrical strength

* Excellent rigidity & dimensional stability

* Excellent dielectric properties

* Low water absorption

* Flame resistance ,UL94-V0

* Tighter thickness tolerance

* Flat and straight sheet

* Smooth and clean surface.

* Easy to machine by CNC , such as drill holes or grinded .

Hong Cheng Grade HC-FR-4
IEC 893/EN 60893 Grade EPGC 202
DIN 7735 Hgw2372.1
Item Test method Unit Typical Values
Physical Properties Color Visual inspection Light green / yellow
Specific Gravity IEC 60893-2:2003 g/cm3 1.90 - 2.15
Water absorption ISO 62:2008 % <0.3
Electrical Properties Electric strength ┴ IEC 60893-2:2003 KV/mm ≥ 14(3.0mm)
Breakdown Voltage // IEC 60893-2:2003 KV ≥ 60
Volume Resistivity IEC 60093:1980 Ω.m ≥ 1.0×1012
Surface Resistivity IEC 60093:1980 Ω ≥ 1.0×1014
(1 MHZ) Dielectric constant IEC 60893-2:2003 4.0-5.5
(1MHZ)Dissipation Factor IEC 60893-2:2003 0.04-0.05
Proof Tracking Index PTI IEC 60893-2:2003 V ≥ 200
Insulation resistance after immersion 24Hrs in Water IEC 60893-2:2003 Ω ≥ 5×1010
Mechanical Properties Flexural Strength ┴ IEC 60893-2:2003 MPa ≥ 340
Charpy Impact strength // IEC 60893-2:2003 KJ/m2 ≥60
TensileStrength IEC 60893-2:2003 MPa ≥300
//Bond Strength // IEC 60893-3-4:2003 N ≥8000
Compressive Strength┴ IEC 60893-2:2003 MPa ≥ 350
Flame Resistance Properties Flame resistance IEC 60893-2:2003 V-0
Temperature Index IEC 60085:2004 155
Toxicant Content E662 Low
Others Acetone Resistance boiled Min 30(OK)


Due to the High mechanical & electrical strength , this material have the widely application in every electrical equipments , such as  

Epoxy sheet FR-4 with the good properties on mechanical & electrical , this material is widely used high-end insulation parts processing, FPC (flexible printed circuit-board) reinforcement sheet, air gap , cover and base of transformer . planetary wheel, transformer insulation baffle, LV&MV voltage switch, precision test fixture, carbon film printing, electronic insulation parts, gasket,washer,various water sports equipment and blade-tool handle materials.

If the color of epoxy sheet is yellow , it has the good property on ageing resistant , usually , it was used in out door electrical equipment . Out door with direct solar radiation , the normal material will be accelerated aging.

CNC Light Green FR-4 Epoxy Laminated Sheet Machined Parts 0

CNC Light Green FR-4 Epoxy Laminated Sheet Machined Parts 1