Technical datasheet

Somos® ProtoGen 18420

Supplied byCovestro- Last Updated on Dec 9, 2021

Somos® ProtoGen 18420 is a liquid photopolymer grade. It is an easy to clean, acrylonitrile butadiene styrene (ABS)-like grade, producing accurate parts ideal for general purpose. It is the first stereolithography grade to demonstrate different material properties based on machine exposure control. Exhibits superior chemical resistance, high heat resistance, a wide processing latitude, excellent tolerance to a broad range of temperature and humidity, both during and after the build. Can be processed be 3D printing method. Parts created from Somos® ProtoGen 18420 show accurate RTV patterns, durable concept models, highly accurate, humidity and temperature resistant parts. Used in solid imaging processes, such as stereolithography to build three-dimensional parts. Recommended for medical, electronic, aerospace and automotive markets.
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Somos® ProtoGen 18420 properties

Electrical properties

PropertiesValue & unitTest conditionTest method
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Constant0.0 Visible After LoginVisible After LoginVisible After Login
Dielectric Strength0.0 Visible After LoginVisible After LoginVisible After Login

Mechanical properties

PropertiesValue & unitTest conditionTest method
Elongation at Break0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Modulus0.0 Visible After LoginVisible After LoginVisible After Login
Flexural Strength0.0 Visible After LoginVisible After LoginVisible After Login
Hardness, Shore D0.0 Visible After LoginVisible After LoginVisible After Login
Impact Strength, Notched Izod0.0 Visible After LoginVisible After LoginVisible After Login
Modulus of Elasticity0.0 Visible After LoginVisible After LoginVisible After Login
Poisson ratio0.0 Visible After LoginVisible After LoginVisible After Login
Tensile Strength0.0 Visible After LoginVisible After LoginVisible After Login

Optical properties

PropertiesValue & unitTest conditionTest method
Critical Exposure (EC)0.0 Visible After LoginVisible After LoginVisible After Login
Exposure0.0 Visible After LoginVisible After LoginVisible After Login
Slope of cure-depth vs. In (E) curve0.0 Visible After LoginVisible After LoginVisible After Login

Other properties

PropertiesValue & unitTest conditionTest method
Viscosity0.0 Visible After LoginVisible After LoginVisible After Login

Physical properties

PropertiesValue & unitTest conditionTest method
Density0.0 Visible After LoginVisible After LoginVisible After Login
Water Absorption0.0 Visible After LoginVisible After LoginVisible After Login

Thermal properties

PropertiesValue & unitTest conditionTest method
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
CTE, Linear0.0 Visible After LoginVisible After LoginVisible After Login
Deflection Temperature at 0.46 MPa (66 psi)0.0 Visible After LoginVisible After LoginVisible After Login
Deflection Temperature at 1.8 MPa (264 psi)0.0 Visible After LoginVisible After LoginVisible After Login
Glass Transition Temperature (Tg)0.0 Visible After LoginVisible After LoginVisible After Login

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