FR4SheetNatural
FR4 - 4.250" 36 x 48 Natural Sheet
4.25 in × 36 in × 48 in Sheet
Same-day shipping available
Quality certified
Expert support
About This Product
Built for demanding electrical and structural applications, this FR4 Glass Epoxy sheet comes in a substantial 4.25" thickness and a full 36.0" x 48.0" sheet size in Natural color. The extra-thick profile delivers outstanding rigidity and dimensional stability, while FR4’s inherent electrical insulation, moisture resistance, and dependable machinability make it a strong choice for heavy-duty fabricated components and support panels.
Specifications
Shape
Sheet
Thickness
4.25 inWidth
36 inPrice
$5293.20 / Each
In Stock
21010 availableAvailable at 11 locations
Ships same day if ordered by 2pm
Quality guaranteed
Quick Info
Typical Properties — FR4 - 4.250" 36 x 48 Natural Sheet
Glass Epoxy Fr4Mechanical
PropertyTest MethodUnitValue
Tensile strengthpsi / MPa65,000 / 445
Compressive strengthpsi / MPa38,000 / 260
Flexural strength (LW -A 0.125″)psi / MPa60,000 / 410
Bond strengthpsi / MPa2,300 / 15
Shear strengthpsi / MPa21,500 / 145
Hardness (M scale)115
Izod impact strength at 49°C (LW)14.00
General
DescriptionValue
Specific gravity1.85
Flammability rating94V-0
Water absorption (24 hours)0.10
Operating Environment
PropertyTest MethodUnitValue
Maximum temperature°C / °F140 / 280
Typical properties are provided for reference only. Values may vary based on processing conditions, form factor, and lot. Contact Ready Plastics for certified test data.