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Somos® WaterShed™ XC 11122 SLA Resin

Somos® 11122 WaterShed™ XC is a unique new material composite of many desirable engineering properties mimicking the flexural strength and modulus of polycarbonate; the notched Izod impact strength of Nylon 66, and the tensile strength of ABS. A new generation of material, WaterShed, exhibits phenomenal water and humidity resistance for a StereoLithography resin system. It produces very stable Quickcast Investment Casting patterns. Its transparent appearance may be dyed, in a secondary step, for color tint.

Available Colors
ASTM
Test		 Description WaterShed™ XC 11122 ABS
(transparent)		 Polycarbonate
(optical grade)		 Duraform™
Polyamide		 Nylon 66 Rigid Polyvinyl
Chloride
D638M Tensile Strength 7774 psi 53.6 MPa 45.7 MPa 62.5 MPa 44 MPa 85 MPa 57 MPa
Elongation at Break 11-20% 11-20% 41.6% 110% 9% 25% 20%
Elongation at Yield 3.5% 3.5% n/a 6% n/a 4% n/a
Modulus of Elasticity 418,000 psi 2880 MPa 2000 MPa 2,300 MPa 1,600 MPa 3,100 MPa 3000 MPa
D790M Flex Strength 10,756 psi 74.16 MPa 73.5 MPa 94.2 MPa n/a 120 MPa 90 MPa
Flex Modulus 344,000 psi 2370 MPa 2,300 MPa 2,300 MPa 1,285 MPa 2,900 MPa 2,756 MPa
D256A Izod Impact-Notched 0.5 ft-lb/in 0.3 J/m 1.6 Jcm 7.1 J/cm 214 J/cm 0.45 J/cm 272 J/m
D542 Index of Refraction 1.513-1.515 1.513-1.515 1.52 1.59 n/a n/a n/a
D648 Heat Defl. Temp. 130°F 54.5°C 94°C 140°C 177°C 220°C 72°C

 

A colorimeter was used to measure the amount of color and light able to pass though these materials. 
Percent light transmission values were then compared with other plastic samples, including WaterShed
11120, a competitive polycarbonate-like SL resin and acrylic.