SLA_ProtoGen_18420

ProtoGen 18420 SPEC SHEET


ProtoGen 18420 is a liquid, ABS-like, white colored photopolymer, providing considerable processing latitude and has excellent tolerance to a broad range of temperatures and humidity. 18420 Protogen is ideal for the medical, electronic, aerospace and automotive market (Higher mechanical properties may be achieved through thermal postcure).
Mechanical Properties - UV Postcure at HOC -2Test MethodImperialMetric
Tensile StrengthD638M6.1 - 6.4 ksi42.2 - 43.8 MPa
Tensile ModulusD638M316 - 336 ksi2,180 - 2,310 MPa
Elongation at BreakD638M8 - 16%8 - 16%
Poisson’s RatioD638M0.43 - 0.450.43 - 0.45
Flexural StrengthD790M9.7 - 10.2 ksi66.7 - 70.5 MPa
Flexural ModulusD790M289 - 309 ksi1,990 - 2,130 MPa
Hardness (Shore D)D224087 - 8886 - 88
Izod Impact-NotchedD256A0.37 - 0.41 ft-lb/in0.20 - 0.22 J/cm
Water AbsorptionD570-980.68%0.68%


Mechanical Properties - UV Postcure at HOC +3Test MethodImperialMetric
Tensile StrengthD638M8.2 - 8.3 ksi56.9 - 57.1 MPa
Tensile ModulusD638M370 - 380 ksi2,540-2,620MPa
Elongation at BreakD638M8 - 12%8 - 12%
Poisson’s RatioD638Mnot recordednot recorded
Flexural StrengthD790M12.2 - 12.6 ksi83.8 - 86.7 MPa
Flexural ModulusD790M350 - 355 ksi2,400-2,450MPa 3
Hardness (Shore D)D2240not recordednot recorded
Izod Impact-NotchedD256Anot recordednot recorded
Water AbsorptionD570-98not recordednot recorded


Mechanical Properties - UV & Thermal PostcureTest MethodImperialMetric
Tensile StrengthD638M9.6 - 9.9 ksi66.1 - 68.1 MPa
Tensile ModulusD638M417 - 430 ksi2,880 - 2,960 MPa
Elongation at BreakD638M5 - 9%6 - 9 %
Poisson’s RatioD638M0.40 - 0.420.40 - 0.42
Flexural StrengthD790M12.3 - 12.7 ksi84.9 - 87.7 MPa
Flexural ModulusD790M331 - 339 ksi2,280 - 2,340 MPa
Hardness (Shore D)D224086 - 8786 - 87
Izod Impact-NotchedD256A0.17 - 0.39 ft-lb/in0.015 J/cm
Water AbsorptionD570-980.61%0.61%


Thermal/Electrical Properties - UV Postcure at HOC -2Test MethodImperialMetric
C.T.E. -40 ºC - 0 ºC (-40ºF – 32ºF)E831-0535.3 - 37.1 µin/in- ºF74.6 - 75.5 µm/m- ºC
C.T.E. 0 ºC - 50 ºC (32ºF – 122ºF)E831-0548.8 - 51.7 µin/in- ºF101.2 - 110.3 µm/m- ºC
C.T.E. 50 ºC - 100 ºC (122ºF – 212ºF)E831-0591.3 - 95.5 µin/in- ºF114.4 - 135.8 µm/m- ºC
C.T.E. 100 ºC - 150 ºC (212ºF – 302ºF)E831-0583.3 - 92.9 µin/in- ºF129.5 - 138.1 µm/m- ºC
Dielectric Constant 60 HzD150-983.5 - 3.63.5 - 3.6
Dielectric Constant 1KHzD150-983.4 - 3.53.4 - 3.5
Dielectric Constant 1MHzD150-983.1 - 3.33.1 - 3.3
Dielectric StrengthD149-97a334 - 359 V/mil13.2 - 14.2 kV/mm
TgE1545-00135 – 138ºF57- 59ºC
HDT @ 0.46 MPa (66 psi)D648127 – 133ºF53 - 56ºC
HDT @ 1.81 MPa (264 psi)D648114 – 116ºF46 - 47ºC


Thermal/Electrical Properties - UV & Thermal PostcureTest MethodImperialMetric
C.T.E. -40 ºC - 0 ºC (-40ºF – 32ºF)E831-0537.4 - 37.9 µin/in-ºF67.3 - 68.2 µm/m- ºC
C.T.E. 0 ºC - 50 ºC (32ºF – 122ºF)E831-0545.7 - 48.0 µin/in-ºF82.2 - 86.4 µm/m- ºC
C.T.E. 50 ºC - 100 ºC (122ºF – 212ºF)E831-0561.3 - 64.4 µin/in-ºF110.4 -116.0 µm/m- ºC
C.T.E. 100 ºC - 150 ºC (212ºF – 302ºF)E831-0584.8 - 90.7 µin/in-ºF152.7 - 163.2 µm/m- ºC
Dielectric Constant 60 HzD150-983.1 - 3.33.1 - 3.3
Dielectric Constant 1KHzD150-983.1 - 3.23.1 - 3.2
Dielectric Constant 1MHzD150-982.9 - 3.02.9 - 3.0
Dielectric StrengthD149-97a350 - 357 V/mil13.8 - 14.1 kV/mm
TgE1545-00172 – 205ºF78 – 96ºC
HDT @ 0.46 MPa (66 psi)D648199 - 208ºF93 – 98ºC
HDT @ 1.81 MPa (264 psi)D648166 - 173ºF74 – 78ºC


Liquid Properties
AppearanceOff-White
Viscosity~1,000 cps @ 30°C
Density~1.61 g/cm³ @ 25°C


Optical Properties
EC7.8 mJ/cm²[critical exposure]
DP4.3 mils[slope of cure-depth vs. In (E) curve]
E1080 mJ/cm²[exposure that gives 0.254 mm (.010 inch) thickness]

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