No matter how complex your designs, polyamide is a great and versatile choice. The self-supporting powder needs no support structure and works equally well for fully functional prototypes or end-use parts. The PA 12 material used by Multi Jet Fusion technology has a very fine grain, resulting in parts with higher density and lower porosity than parts produced with Laser Sintering. That feature also makes PA 12 for MJF the ideal choice when you need more detailed surface resolution or thinner walls than are possible with Laser Sintering. Think crisp textures, embossing, and engraving, or labels.

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Technical Specifications

Standard lead time 5 working days (online & offline orders)
Standard accuracy ±0.3% (with lower limit on ±0.3 mm)
Layer thickness 0.08 mm
Minimum wall thickness 1 mm, but living hinges are possible at 0.5 mm
Minimum detail 0.25 mm
Minimum clearance 0.4 mm between parts that need to be assembled
0.5 mm between shells of an interlocking part
Maximum part dimensions 256 x 340 x 360 mm
Interlocking or enclosed parts? Yes
Surface structure Unfinished parts typically have a smooth surface, without visible layers, and a stone-grey color. Multi Jet Fusion parts can be sandblasted and colored/impregnated.

Datasheet

MEASUREMENT VALUE STANDARD
Powder melting point (DSC) 187°C ASTM D3418
Particle size 60 µm ASTM 03451
Bulk density of powder 0.425 g/cm3 ASTM D1895
Density of parts 1.01 g/cm3 ASTM D792
Tensile Strength, Max Load4 - XY 48 MPa/6960 psi ASTM D638
Tensile Strength, Max Load4 - Z 48 MPa/6960 psi ASTM D638
Tensile Modulus4 - XY 1700 MPa/245 ksi ASTM D638
Tensile Modulus4 - Z 1800 MPa/260 ksi ASTM D638
Elongation at Break4 - XY 20% ASTM D638
Elongation at Break4 - Z 15% ASTM D638
Heat Deflection Temperature - Z
175°C
95°C
ASTM D648
@ 0.45 MPa
@ 1.82 MPa

Actual values may vary with build condition

How Does Multi Jet Fusion work?

Multi Jet Fusion is a powder-based technology but does not use lasers. The powder bed is heated uniformly at the outset. A fusing agent is jetted where particles need to be selectively molten, and a detailing agent is jetted around the contours to improve part resolution. While lamps pass over the surface of the powder bed, the jetted material captures the heat and helps distribute it evenly.

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The 3D model

The 3D model

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A fusing agent and a detailing agent are jetted to selectively melt powder particles and improve resolution

A fusing agent and a detailing agent are jetted to selectively melt powder particles and improve resolution

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Lamps pass over the surface constantly, the jetted material captures and distributes the heat

Lamps pass over the surface constantly, the jetted material captures and distributes the heat

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The process continues building up the part layer by layer

The process continues building up the part layer by layer

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The loose powder is removed

The loose powder is removed

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The part is finished

The part is finished