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Plastics & Elastomers
The material selection platform
Plastics & Elastomers
by SpecialChem
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Somos® ProtoGen 18120

Technical Datasheet | Supplied by Covestro
Somos® ProtoGen 18120 is a liquid acrylonitrile butadiene styrene (ABS)-like photopolymer grade ideal for general purpose applications. It is the first stereolithography grade to demonstrate different material properties based on machine exposure control. Exhibits superior chemical resistance, a wide processing latitude, excellent tolerance to a broad range of temperature and humidity, both during and after the build. Can be processed using 3D printing method. Used in solid imaging processes, such as stereolithography to build three-dimensional parts. Somos® ProtoGen 18120 is recommended for medical, electronic, aerospace and automotive markets that demand accurate RTV patterns, durable concept models, highly accurate and humidity & temperature resistant parts.
Product Type
Thermoset, other
Physical Form

Somos® ProtoGen 18120 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
1.16 g/cm3
(At 25°C)
Water Absorption
0.75 %
(UV & Thermal Postcure)
ASTM D570-98
Water Absorption
0.75 %
(UV & Thermal Postcure)
ASTM D570-98
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