Materials / Compare

PCB Laminate FR-4 vs. SLA Resin Standard

Compare PCB Laminate FR-4 vs. SLA Resin Standard strength, stiffness, weight and thermal properties.

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PCB Laminate FR-4Composite
SLA Resin Standard3D printed (SLA resin)
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Mechanical
Yield strengthnot given (tensile used)not given (tensile used)
Ultimate tensile strength246–385MPasourcetypical, in-plane: cross direction .. length direction (ASTM D3039)60MPasourcetypical
Flexural strength531–621MPasourcetypical: cross direction .. length direction (IPC-TM-650 2.4.4B)105MPasourcetypical
Elongation at breaknot sourced8%sourcetypical
Young's modulus (stiffness)21.9–25.8GPasourcetypical, in-plane: cross direction .. length direction (ASTM D790-15e2)2.75GPasourcetypical
Density1,920kg/m³sourcetypical, 50% resin content; another FR-4 producer: Park Nelco N4000-6 (high-Tg multifunctional epoxy), not Isola 370HRnot sourced
Strength to weight164kN·m/kgnot sourced
Stiffness to weight12.4MN·m/kgnot sourced
Poisson's ratio0.171–0.177sourcetypical, in-plane: cross direction .. length directionnot sourced
Shear modulus10.2GPanot sourced
Bulk modulus12.2GPanot sourced
Speed of sound3,525m/snot sourced
Thermal
Thermal conductivity0.4W/m·Ksourcetypical (ASTM E1952); direction not stated by the sheetnot sourced
Thermal expansion13–14µm/m·Ksourcetypical, in-plane X/Y-axis, below Tg (IPC-TM-650 2.4.24C)not sourced
100 mm part over a 50 °C swing67.5µm growthnot sourced
Specific heat1,200–1,400J/kg·Ksourcetypical (ASTM E1461); another FR-4 producer: Park Nelco N4000-6 (high-Tg multifunctional epoxy), not Isola 370HRnot sourced
Heats up and cools (diffusivity)0.16mm²/snot sourced
Thermal shock resistance324W/mnot sourced
Glass transition180°Csourcetypical, DSC (IPC-TM-650 2.4.25C)not sourced
Max service temperature130°CsourceUL Relative Thermal Index (UL 796)59°CsourceHDT 1.8 MPa
Values forIsola 370HR FR-4 laminate (Polyclad PCL-FR-370HR, 180 C Tg multifunctional epoxy, E-glass fabric), copper removed; Isola data sheet Revision C, last updated April 15, 2021. Woven-glass laminate: the sheet gives in-plane values per weave direction (length / cross) and the Z-axis CTE separately; the solver is isotropic per material.Formlabs Clear Resin V5 (FLGPCL05), TDS Rev. 01 March 20, 2024; printed on Form 4 at 100 µm, washed 5 min in >=99% IPA, post-cured 15 min at 60 °C in Form Cure. Orientation not stated.

Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.

SLA Resin Standard is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is PCB Laminate FR-4 stronger than SLA Resin Standard?

PCB Laminate FR-4 is stronger: its tensile strength is 315 MPa against 60 MPa for SLA Resin Standard (5.26x).

Which is stiffer, PCB Laminate FR-4 or SLA Resin Standard?

PCB Laminate FR-4 is stiffer: Young's modulus 23.9 GPa against 2.75 GPa for SLA Resin Standard, so the same part in PCB Laminate FR-4 deflects less under the same load.

Among 72 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelSiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30PCB Laminate FR-4
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickSiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DSolder SAC305Plastic PBT GF30Plastic PPS GF40Plastic LCP GF30PCB Laminate FR-4
Strength against density

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