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)
Layer thickness 0.1 mm
Minimum wall thickness 1 – 3 mm (depending on part dimensions)
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
Interlocking or enclosed parts? No
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, painted, varnished, covered and coated


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

Actual values may vary with build condition

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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