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DSM Somos® 9420 Epoxy Resin for Stereolithography

Category Polymer , Rapid Prototyping Polymer , Thermoset , Epoxy
Manufacturer DSM Somos
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF DSM Somos® 9420 Epoxy Resin for Stereolithography.pdf
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Material Notes:
DescriptionDSM Somos® 9420 is a liquid photopolymer that produces robust, functional and accurate parts using stereolithography machines. The material offers superior chemical resistance and a wide processing latitude. With mechanical properties that mimic many engineering plastics, parts created from Somos® 9420 exhibit superior fatigue properties, strong memory retention and high quality up-facing and down-facing surfaces. Somos® 9420 also offers a good balance of properties between rigidity and functionality. This material is also useful in creating parts for applications where durability and robustness are critical requirements (e.g. automobile components, electronic housings, medical products, large panels and snap-fit parts).ApplicationSomos® 9420 Photopolymer is used in the solid imaging process to build three-dimensional parts.Information Provided by DSM Desotech Inc.
Physical Properties Metric English Comments
Density 1.13 g/cc

@Temperature 25.0 °C
0.0408 lb/in³

@Temperature 77.0 °F
Water Absorption 0.93 %
0.93 %
ASTM D570-98
Viscosity 475 cP

@Temperature 30.0 °C
475 cP

@Temperature 86.0 °F
Mechanical Properties Metric English Comments
Hardness, Shore D 70 - 74
70 - 74
ASTM D2240
Tensile Strength, Yield 17.0 - 20.0 MPa
2470 - 2900 psi
ASTM D638M
Elongation at Break 25 - 30 %
25 - 30 %
ASTM D638M
Modulus of Elasticity 0.553 - 0.850 GPa
80.2 - 123 ksi
ASTM D638M
Flexural Strength 24.0 - 30.0 MPa
3480 - 4350 psi
ASTM D790M
Flexural Modulus 0.768 - 0.900 GPa
111 - 131 ksi
ASTM D790M
Poissons Ratio 0.43
0.43
ASTM D638M
Izod Impact, Notched 0.440 - 0.480 J/cm
0.824 - 0.899 ft-lb/in
ASTM D256A
Thermal Properties Metric English Comments
CTE, linear 96.8 µm/m-°C

@Temperature -40.0 - 0.000 °C
53.8 µin/in-°F

@Temperature -40.0 - 32.0 °F
ASTM E831-00
144 µm/m-°C

@Temperature 100 - 150 °C
80.0 µin/in-°F

@Temperature 212 - 302 °F
ASTM E831-00
149.5 µm/m-°C

@Temperature 0.000 - 50.0 °C
83.06 µin/in-°F

@Temperature 32.0 - 122 °F
ASTM E831-00
178.7 µm/m-°C

@Temperature 50.0 - 100 °C
99.28 µin/in-°F

@Temperature 122 - 212 °F
ASTM E831-00
Deflection Temperature at 0.46 MPa (66 psi) 47.0 - 50.0 °C
117 - 122 °F
ASTM D648-98c
Deflection Temperature at 1.8 MPa (264 psi) 36.0 - 38.0 °C
96.8 - 100 °F
ASTM D648-98c
Glass Transition Temp, Tg 57.0 - 60.0 °C
135 - 140 °F
ASTM E1545-00
Electrical Properties Metric English Comments
Dielectric Constant 3.94

@Frequency 1.00e+6 Hz
3.94

@Frequency 1.00e+6 Hz
ASTM D150-98
4.66

@Frequency 1000 Hz
4.66

@Frequency 1000 Hz
ASTM D150-98
5.33

@Frequency 60.0 Hz
5.33

@Frequency 60.0 Hz
ASTM D150-98
Dielectric Strength 14.1 kV/mm
358 kV/in
ASTM D149-97a
Descriptive Properties Value Comments
Appearance White
Dp (mm) 0.14
Slope of cure-depth vs. ln(E) curve
E10 (mJ/cm2) 95
Exposure that gives 0.254mm thickness
Ec (mJ/cm2) 15
Critical exposure
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