DMLS Materials - Technical Specifications

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ALUMIDE NYLON GLASS FILLED NYLON POLYSTYRENE S L S M A T E R I A L S MATERIAL PROPERTIES VALUE UNITS VALUE UNITS VALUE UNITS VALUE UNITS Density of lasersintered part 1.36 ± 0.05 g/cm³ 0.9 - 0.95 g/cm³ 1.23 - 1.28 g/cm³ 0.70 - 0.85 g/cm³ MECHANICAL PROPERTIES VALUE UNITS VALUE UNITS VALUE UNITS VALUE UNITS Tensile modulus Tensile Strength, X-/Y-direction Tensile Strength, Z-direction 3800 ± 150 N/mm² 1700 ± 150 46 ± 3 N/mm² 45 ± 3 N/mm² or MPa N/mm² or MPa 3200 ± 200 48 ± 3 N/mm² or MPa N/mm² or MPa 1600 ± 250 N/mm² 5.5 ± 1.0 N/mm² 1.2 ± 0.3 N/mm² Elongation at break 3.5 ± 1 % 20 ± 5 % 6 ± 3 % 0.4 ± 0.1 % Flexural modulus Charpy – Impact strength Charpy – Notched impact strength Izod – Impact strength Izod – Notched impact strength Ball Indentation Hardness 3000 ± 150 N/mm² 1240 ± 130 N/mm² or MPa 2100 ± 150 N/mm² or MPa 29 ± 2 kJ/m² 53 ± 3.8 kJ/m² 35 ± 6 kJ/m² 4.6 ± 0.3 kJ/m² 4.8 ± 0.3 kJ/m² 5.4 ± 0.6 kJ/m² 32.8 ± 3.4 kJ/m² 21.3 ± 1.7 kJ/m² 4.4 ± 0.4 kJ/m² 4.2 ± 0.3 kJ/m² 77.6 ± 2 98 Shore D hardness 76 ± 2 80 ± 2 THERMAL PROPERTIES VALUE UNITS VALUE UNITS VALUE UNITS VALUE UNITS Melting Point 172 - 180 °C 172 - 180 °C 172 - 180 °C Vicat softening temperature B/50 Vicat softening temperature A/50 Heat conductivity 0.5 - 0.8 W(mK) -1 Glass Transition Temperature Material Destruction Remaining Ash Content 169 °C 163 °C 166 °C 181 °C 179 °C 150 ± 1 °C 250 - 550 °C 0.002 % Be prepared Boy Scout Motto
W H A T I S D M L S ? What is Direct Metal Laser Sintering? Direct Metal Laser Sintering (DMLS) is a revolutionary technology that produces otherwise ‘impossible-to-make’ end-use metal parts directly from your 3D CAD data, whilst negating the investment in time and money of conventional tooling. The parts produced are comparable to a good investment cast part and the mechanical properties are comparable to those of a cast or machined component. The DMLS process is not restrictive in its application and the components produced can be used in place of almost any conventionally manufactured part, whether they would normally be machined or cast. The advantage of the process is that the more complex or feature rich the component, the more economical the process becomes. DMLS is an ‘additive’ technology that works by fusing together very fine layers of metal powder using a focussed laser beam. www.3trpd.co.uk/dmls A support structure is required CAD Model Sintered Part to hold the parts in position during building and this is anchored onto a steel platform. The supports and components are built with a layer thickness ranging from 20 to 60 microns depending on the material used. Each layer is scanned with the laser fusing the powder to layer below and forming the new build layer, the base is lowered one layer, a fresh layer of powder is deposited, and the next layer is scanned. A powerful 200W Yb-fibre laser is precisely controlled in the X and Y co-ordinates allowing for exceptional tolerances to be held (
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