Tusk SolidGrey3000 is the world’s first Stereolithography material that combines a high degree of stiffness with high impact resistance, and it is available exclusively at Materialise. Parts built with this material are not only robust, but highly functional as well, allowing them to be used in a wide variety of applications. Ideal applications include automotive body parts, machine covers, functional prototypes, durable concept models and robust scale models.

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Technical Specifications

Standard lead time Minimum of 3 working days, depending on part size, number of components and finishing degrees
Standard accuracy ± 0.2% (with lower limit on ± 0.2 mm)
Minimum wall thickness 1 – 3 mm (depending on part dimensions)
Layer thickness 0.1 mm
Maximum part dimensions 2000 x 700 x 788 mm
Maximum part dimensions can vary according to the chosen material and the geometry of the part
Surface structure Unfinished parts typically have visible building layers on the surface but post-production finishes can achieve different effects, from high glosses to coarse textures. Stereolithography parts can be sandblasted, smoothed, colored/impregnated, painted, varnished, covered and coated.


  Units ASTM# Range
Density g/cm³     1.18 – 1.2
Tensile Strength at Yield MPa  D638M 60 – 66
Tensile Modulus MPa  D638M 2970 – 3285
Elongation at Yield % D638M 3.0
Elongation at Break % D638M 4.6 – 7.2
Flexural Modulus MPa D790M 1843 – 2017
Hardness ShoreD D2240 84
Notched Izod Impact J/m D256A 30 – 35
Water Absorption % D570-98 0 0.36 – 0.40
Glass Transition Temperature °C E1545-05a 40 – 48
Heat Deflection Temp °C D648 - 07B at 0.46MPa 53 – 57
at 1.82MPa 49 – 57

Actual values may vary with build condition

Design Guidelines

We’ve put together our trusted tips, tricks and best practices to get you off to a solid start. If you’ve been wondering whether this material allows for interlocking parts or embossing, or if you just want to avoid common design mistakes, check out this handy design guide.

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Finishing Degrees

The right finish and color can transform a print into a product. Whether you’re looking for a functional finish that’s designed for lightning fast lead-times or an aesthetic finish that makes your prototype identical to the final product, take a look at your wide range of options with Stereolithography finishes at Materialise.

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How Does Stereolithography Work?

Stereolithography is a laser-based technology that uses a UV-sensitive liquid resin. A UV laser beam scans the surface of the resin and selectively hardens the material corresponding to a cross-section of the product, building the 3D part from the bottom to the top. The required supports for overhangs and cavities are automatically generated, and later manually removed.

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