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 -2
Test Method
Imperial
Metric
Tensile Strength
D638M
6.1 - 6.4 ksi
42.2 - 43.8 MPa
Tensile Modulus
D638M
316 - 336 ksi
2,180 - 2,310 MPa
Elongation at Break
D638M
8 - 16%
8 - 16%
Poisson’s Ratio
D638M
0.43 - 0.45
0.43 - 0.45
Flexural Strength
D790M
9.7 - 10.2 ksi
66.7 - 70.5 MPa
Flexural Modulus
D790M
289 - 309 ksi
1,990 - 2,130 MPa
Hardness (Shore D)
D2240
87 - 88
86 - 88
Izod Impact-Notched
D256A
0.37 - 0.41 ft-lb/in
0.20 - 0.22 J/cm
Water Absorption
D570-98
0.68%
0.68%
Mechanical Properties - UV Postcure at HOC +3
Test Method
Imperial
Metric
Tensile Strength
D638M
8.2 - 8.3 ksi
56.9 - 57.1 MPa
Tensile Modulus
D638M
370 - 380 ksi
2,540-2,620MPa
Elongation at Break
D638M
8 - 12%
8 - 12%
Poisson’s Ratio
D638M
not recorded
not recorded
Flexural Strength
D790M
12.2 - 12.6 ksi
83.8 - 86.7 MPa
Flexural Modulus
D790M
350 - 355 ksi
2,400-2,450MPa 3
Hardness (Shore D)
D2240
not recorded
not recorded
Izod Impact-Notched
D256A
not recorded
not recorded
Water Absorption
D570-98
not recorded
not recorded
Mechanical Properties - UV & Thermal Postcure
Test Method
Imperial
Metric
Tensile Strength
D638M
9.6 - 9.9 ksi
66.1 - 68.1 MPa
Tensile Modulus
D638M
417 - 430 ksi
2,880 - 2,960 MPa
Elongation at Break
D638M
5 - 9%
6 - 9 %
Poisson’s Ratio
D638M
0.40 - 0.42
0.40 - 0.42
Flexural Strength
D790M
12.3 - 12.7 ksi
84.9 - 87.7 MPa
Flexural Modulus
D790M
331 - 339 ksi
2,280 - 2,340 MPa
Hardness (Shore D)
D2240
86 - 87
86 - 87
Izod Impact-Notched
D256A
0.17 - 0.39 ft-lb/in
0.015 J/cm
Water Absorption
D570-98
0.61%
0.61%
Thermal/Electrical Properties - UV Postcure at HOC -2