MATERIAL DATASHEET Composites

MATERIAL DATASHEETCompositesPlastic MatrixTensile Modulus .652.8282 FAX:716.655.4915MILLER3DPRINTING.COMTest (ASTM)D638Onyx1.4Onyx FR1.3Nylon W1.7Tensile Stress at Yield (MPa)D638362951Tensile Strain at Yield (%)D63825334.5Tensile Stress at Break (MPa)D638303136Tensile Strain at Break (%)D6385858150Flexural Strength (MPa)D7901817950Flexural Modulus (GPa)D79013.64.01.4Heat Deflection Temp (oC)D648 B14514541UL94—V-02—D256-10 A330—110—1.21.21.1Flame ResistanceIzod Impact - notched (J/m)Density (g/cm3)Fiber ReinforcementDimensions and Construction of Plastic TestSpecimens: Tensile test specimens: ASTM D638 typeIV beams Flexural test specimens: 3-pt. Bending,4.5 in (L) x 0.4 in (W) x 0.12 in (H) Heat-deflection temperature at 0.45 MPa,66 psi (ASTM D648-07 Method B)All Markforged composite machines areequipped to print Onyx. Nylon White isavailable on the Mark Two and X7. Onyx FR isavailable on X3, X5, and X7.Markforged parts are primarily composedof plastic matrix. Users may add one type offiber reinforcement in each part, enhancing itsmaterial properties.1. Measured by a method similar to ASTMD790. Thermoplastic-only parts do not breakbefore end of flexural test.2. Onyx FR at a thickness of 3mm achievesUL94 V-0 rating from a third-party UL-certifiedlab.Test (ASTM)CarbonKevlar FiberglassHSHT FGTensile Modulus (GPa)D303960272121Tensile Strain at Break (%)D30391.52.73.83.9Flexural Strength (MPa)D7901540240200420Flexural Modulus (GPa)D790151262221Flexural Strain at Break (%)D79011.22.11.12.2Compressive Strength (MPa)D664132097140192Compressive Modulus (MPa)D664154282121Compressive Strain at Break (%)D66410.71.5——Heat Deflection Temp (oC)D648 B105105105150D256-10 A960200026003100Density (g/cm3)—1.41.21.51.5Dimensions and Construction of Fiber CompositeTest Specimens:Deflection Temperature data were provided by anaccredited 3rd party test facility. Flexural data wasprepared by Markforged. Inc. These represent typicalvalues.Tensile Strength (MPa)Izod Impact - notched (J/m)D3039 Test plaques used in these data are fiberreinforced unidirectionally (0 Plies) Tensile test specimens: 9.8 in (L) x 0.5 in (H) x0.048 in (W) (CF composites), 9.8 in (L) x 0.5 in (H)x 0.08 in (W) (GF and Kevlar composites) Compressive test specimens: 5.5 in (L) x 0.5 in (H)x 0.085 in (W) (CF composites), 5.5 in (L) x 0.5 in(H) x 0.12 in (W) (Kevlar and FG composites) Flexural test specimens: 3-pt. Bending, 4.5 in (L) x0.4 in (W) x 0.12 in (H) Heat-deflection temperature at 0.45 MPa, 66 psi(ASTM D648-07 Method B)Tensile, Compressive, Strain at Break, and Heatmarkforged.com800610Markforged tests plaques are uniquely designed tomaximize test performance. Fiber test plaques arefully filled with unidirectional fiber and printed withoutwalls. Plastic test plaques are printed with full infill.To learn more about specific testing conditions orto request test parts for internal testing, contact aMarkforged representative. All customer parts shouldbe tested in accordance to customer’s specifications.Part and material performance will vary by fiber layoutdesign, part design, specific load conditions, testconditions, build conditions, and the like.REV 3.0 - 4/15/2019590600This representative data were tested, measured, orcalculated using standard methods and are subjectto change without notice. Markforged makes nowarranties of any kind, express or implied, including,but not limited to, the warranties of merchantability,fitness for a particular use, or warranty against patentinfringement; and assumes no liability in connectionwith the use of this information. The data listedhere should not be used to establish design, qualitycontrol, or specification limits, and are not intended tosubstitute for your own testing to determine suitabilityfor your particular application. Nothing in this sheetis to be construed as a license to operate under ora recommendation to infringe upon any intellectualproperty right.480 Pleasant St, Watertown, MA 02472

MATERIAL NY14052OFFICE:716.652.8282 FAX:716.655.4915MILLER3DPRINTING.COMMarkforged composite printers use a base plastic matrix reinforced with continuous fibers. Combining the materials during printingyields composite parts far stronger, stiffer, and more robust than conventional 3D printed plastics.Plastic MatrixFiber Reinforcementnear melting point and extrudes it through its nozzle, building a plastic matrixplastic printed parts with continuous fibers on each layer of a part. Users canIn Fused Filament Fabrication (FFF), a printer heats thermoplastic filament tolayer by layer. Plastics can be reinforced by any one type of fiber.Continuous Filament Fabrication (CFF) is proprietary technology that reinforcescontrol the layers reinforced, amount, orientation, and type of reinforcing fiber.600100Onyx500Onyx FR60Flexural Stress (MPa)Flexural Stress (MPa)80ABSNylon White40CarbonFiber20Al 6061-T6HSHTFiberglass400300Kevlar 200Fiberglass100Onyx00Onyx0.010.020.03Flexural Strain0.0400.05Flexural Strength: 81 MPa00.01Carbon Fiber0.02Flexural Strain0.030.04Flexural Strength: 540 MPaOnyx is a chopped carbon fiber reinforced nylon. It’s 1.4 times stronger andCarbon Fiber has the highest strength-to-weight ratio of our reinforcing fibers. Sixbar for surface finish, chemical resistivity, and heat tolerance.is commonly used for parts that replace machined aluminum.stiffer than ABS and can be reinforced with any continuous fiber. Onyx sets theOnyx FRFlexural Strength: 79 MPatimes stronger and eighteen times stiffer than Onyx, Carbon Fiber reinforcementFiberglassFlexural Strength: 200 MPaOnyx FR achieves V-0 rating on the UL94 flammability test while possessingFiberglass is our entry level continuous fiber, providing high strength at anretardancy, light weight, and strength are required.reinforcement results in strong, robust tools.similar mechanical properties to Onyx. It’s best for applications in which flameNylon Whiteaccessible price. 2.5 times stronger and eight times stiffer than Onyx, FiberglassKevlar Flexural Strength: 50 MPaFlexural Strength: 240 MPaNylon White parts are smooth, non-abrasive, and easily painted. They canKevlar possesses excellent durability, making it optimal for parts that experienceholding, repeated handling, and cosmetic parts.be used for a wide variety of applications.be reinforced with any continuous fiber and work best for non-marring workrepeated and sudden loading. As stiff as fiberglass and much more ductile, it canHSHT FiberglassFlexural Strength: 420 MPaHigh Strength High Temperature (HSHT) Fiberglass exhibits aluminum strengthand high heat tolerance. Five times as strong and seven times as stiff as Onyx, it’sbest used for parts loaded in high operating temperatures.markforged.comREV 3.0 - 4/15/2019480 Pleasant St, Watertown, MA 02472

MATERIAL DATASHEET17-4 PH Stainless n1% maxManganese1% max1200Carbon0.07% maxPhosphorous0.04% maxSulfur0.03% maxTensile Stress (MPa)0.15-0.45%Markforged H900 Heat TreatedMetal X system heat treated to H900 specification.Wrought17-4 PH SSMIM17-4 PH SS800600400200bal17-4 PH stainless steel processed with the MarkforgedMarkforged17-4 PH .652.8282 FAX:716.655.4915000.02MIM H900 Heat Treated17-4 PH MIM standard stainless steel heat treated toH900 specification.100um0.040.06Strain0.080.10ASTM A564 H900 Heat TreatedASTM A564 17-4 PH stainless steel heat treated toH900 specification.100um100umTypical Mechanical PropertiesStandardMarkforged H900MIM H900ASTM A564 H9000.2% Yield StrengthASTM E81100 MPa1090 MPa1170 MPaElongation at BreakASTM E86%6%10%Tensile ModulusASTM E8170 GPa190 GPa190 GPaHardnessASTM E1836 HRC33 HRC40 HRCCorrosionASTM F1089PassPassPass— 96%95.5%100%Ultimate Tensile StrengthRelative DensityASTM E81250 MPa1190 MPa1310 MPaAll data and graphs on front page reflect values of H900 heat treated 17-4 PH SS. Markforged represent typical tested values values, while MIMH900 and Wrought H900 represent typical reference values from MPIF Standard 35. For values of Markforged printed 17-4 PH SS as-sinteredand with H1150 heat treatment, please see the reverse side. All composition and “As-Sintered” data verified by a third party test facility. Allmicrostructure images etched and photographed at Markforged.markforged.comREV 2.0 - 7/25/2018480 Pleasant St, Watertown, MA 02472

ADDITIONAL DATA17-4 PH Stainless .652.8282 FAX:716.655.4915MILLER3DPRINTING.COMValues listed below compare Markforged samples processed in three different ways: As-Sintered, heat treated to H900 standard, andheat treated to H1150 standard.Typical Mechanical PropertiesStandardAs Sintered1050 MPa1250 MPa950 MPa0.2% Yield StrengthASTM E8800 MPa1100 MPa880 MPaElongation at BreakASTM E85%6%10%Tensile ModulusASTM E8140 GPa170 GPa170 GPaHardnessASTM E1830 HRC36 HRC32 HRCCorrosionASTM F1089PassPassPass— 96% 96% 96%Ultimate Tensile StrengthRelative DensityASTM E8H900H1150These representative data were tested, measured, or calculated using standard methods and are subject to change without notice. Markforged makes no warrantiesof any kind, express or implied, including, but not limited to, the warranties of merchantability, fitness for a particular use, or warranty against patent infringement; andassumes no liability in connection with the use of this information. The data listed here should not be used to establish design, quality control, or specification limits,and are not intended to substitute for your own testing to determine suitability for your particular application. Nothing in this sheet is to be construed as a license tooperate under or a recommendation to infringe upon any intellectual property right.markforged.comREV 2.0 - 7/25/2018480 Pleasant St, Watertown, MA 02472

MATERIAL DATASHEETH13 Tool 1.2%Carbon0.3-0.45%Manganese0.2-0.5%H13 WroughtHeat TreatedH13 % max400Sulfur0.03% max200bal0IronH13 MarkforgedHeat Treated1600Tensile Stress 2OFFICE:716.652.8282 0.160.18Markforged H13 As-SinteredH13 Tool Steel printed on the Metal X, washed in the Wash-1, and sinteredin the Sinter-1. As Sintered Microstructure is pictured to the left.Markforged H13 Heat TreatedH13 Tool Steel printed with the Metal X system, air quenched at 1010C,and double tempered at 600CWrought H13 Heat TreatedWrought H13 tool steel standard from ASM Specialty Handbook - air50umquenched at 1010C and double tempered at 600C.Typical Mechanical eat TreatedWroughtHeat Treated*0.2% Yield StrengthASTM E8800 MPa1250 MPa1360 MPaElongation at BreakASTM E85%5%14%HardnessASTM E1840 HRC45 HRC46 HRC— 94.5% 94.5%100%Ultimate Tensile StrengthRelative DensityASTM E81420 MPa1500 MPa1580 MPaThese data represent typical values for Markforged H13 Tool Steel as-sintered and after heat treatment. Values were tested in house, and both material compositionand “As-Sintered” data were confirmed by outside testing. These representative data were tested, measured, or calculated using standard methods and are subject tochange without notice. Markforged makes no warranties of any kind, express or implied.*Wrought Heat Treated data included in table only. Data from ASM Specialty Handbook: Tool Materials page 140markforged.comREV 1.0 -12/11/2018480 Pleasant St, Watertown, MA 02472

0.2% Yield Strength ASTM E8 1100 MPa 1090 MPa 1170 MPa Elongation at Break ASTM E8 6% 6% 10% Tensile Modulus ASTM E8 170 GPa 190 GPa 190 GPa Hardness ASTM E18 36 HRC 33 HRC 40 HRC Corrosion ASTM F1089 Pass Pass Pass Relative Density — 96% 95