Also known as HP Multi Jet Fusion PA12, Professional Plastic, HP Nylon Plastic, PA12, Polyamide

MJF Plastic PA12

HP Multi Jet Fusion [MJF]

Material info

About MJF Plastic PA12

Multi Jet Fusion (MJF) Plastic PA12 is HP’s nylon plastic with excellent mechanical properties and a slightly grainy finish. In black, it is also available in a smooth and slighlty glossy finish. MJF Plastic PA12 is an ideal choice for a wide range of applications from industrial parts to durable end-use goods. Its strength, durability and stiffness make it great for functional parts, such RC car parts and mounts. It is also popular for home decor, eyewear and games. MJF Plastic PA12 is printed using HP’s Multi Jet Fusion technology and supports very complex geometries and thin features.

Color & Finishes

Gray
A shade of gray that can vary in lightness
Black
Natural
This finish has a matte finish and slightly grainy feel.
Smooth
This finish has a smooth surface and slight shine, created using a physio-chemical process to vapor smooth the surface

Technology

  • HP Multi Jet Fusion [MJF]

Technical Documents

Material Properties

Tensile modulus (ASTM D638)
1800 MPa (XY), 1800 MPa (Z)
Tensile strength (ASTM D638)
48 MPa
Elongation at break (ASTM D638)
20 % (XY), 15 % (Z)
Flexural modulus (23掳C)(ASTM D790)
1730 MPa

Description

Material Highlights
high strength & durability, good impact resistance, professional finish, thin features & interlocking parts
Flammability degree (UL 94)
HB rating (<75mm/min for thickness of 0.75mm)
Electrical conductivity (UL 746A)
Dielectric strength value 2.8kV/mm, Volume Resistivity value 10^14 ohm-cm

Design Guidelines

Bounding Box

Bounding Box Max
284 x 380 x 380 mm (Gray Natural and Black Smooth)
210 x 210 x 360 mm (Black Natural)

Bounding Box Min
4 x 4 x 1 mm or X + Y + Z > 9 mm (Gray and Black Natural)
10 x 10 x 10 mm (Smooth)

The bounding box is a 劲爆体育在线直播 imaginary outline of a box that encloses the smallest area occupied by your model. Your model must be within the minimum and maximum bounding box sizes. If the size of the model is close to the maximum bounding box, then the printing orientation will be restricted.

Walls

Supported Wall Thickness Min
0.4 mm (Natural)
1.5 mm (Smooth)
Unsupported Wall Thickness Min
0.5 mm (Natural)
1.5 mm (Smooth)
A supported wall is connected at least on two sides of the wall, while an unsupported wall is connected only on one side of the wall. Walls that do not meet the minimum requirements may not survive printing and cleaning processes. Additionally, models may still be rejected based on the wall geometry of the model. Please consider the size of your model and reinforce the walls or add support structures as needed as minimum guidelines will not always be adequate for large models.

Wires

Supported Wires Min
0.8 mm (Natural)
1.5 mm (Smooth)
Unsupported Wires Min
0.9 mm (Natural)
1.5 mm (Smooth)
A wire is a circular, rectangular or even triangular feature that is thinner in its unconnected directions than its length. A supported wire is connected at least on two sides of the model, while an unsupported wire is connected on one side of the model. Wires that do not meet the minimum requirements may not survive printing and cleaning processes. Additionally, models may still be rejected based on the wire geometry of the model. Please consider the size of your model and reinforce the wires or add support structures as needed as minimum guidelines will not always be adequate for large models.

Details

Details Min Embossed
0.2 mm high & wide (Natural)
0.3 mm high & 0.5 mm wide (Smooth)
(0.4 mm high & wide for readable text, logos, and icons)
Details Min Engraved
0.2 mm deep & wide (Natural)
0.3 mm deep & 0.4 mm wide (Smooth)
(0.4 mm high & wide for readable text, logos, and icons)
For text, the ratio between width and depth, should be 1:1 and sans-serif fonts are preferred for line weight consistency.

Escape Holes

Single Escape Hole Diameter (Min)
4.0 mm (Natural)
10 mm (Smooth)
Multiple Escape Hole Diameter (Min)
2.0 mm (Natural)
8.0 mm (Smooth)
Escape holes are necessary to empty the support material of a hollow model. Two escape holes at the opposite ends of the model is optimal for the support removal process. Please consider the size of your model and make the escape holes bigger or add more escape holes as needed as minimum guidelines will not always be adequate for large models.
A single escape hole at the end of a cavity will not allow material in the corners near the escape hole to fully escape. So we recommend multiple escape holes at both ends of the cavity.

Clearance

Min
0.6 mm (Natural)
5.0 mm (Smooth)
Clearance is the space between two individual parts in a model. If the space among the individual parts do not meet the minimum clearance, then parts can fuse together or can be difficult to clean. This is important for movable pieces like hinges, gears, etc.

Sprues

2 mm thick, attached in at least 2 places per part

Sprues are wires that keep two or more parts together. Parts should be connected with a minimum of two sprues each. Please consider the size of your sprues and increase them as needed as minimum guidelines will not always be adequate for large models. If the sprues are within the guidelines and are broken, but there is no damage to your model, we will still ship them as is.

Interlocking & Enclosed Parts

Interlocking
Yes (Natural)
No (Smooth)

Enclosed
Yes

Parts in File

Max
Up to 250 (Natural)
Up to 10 (Smooth)

Accuracy

Accuracy Natural: 卤 0.2 mm 卤 0.5% of the length
Smooth: 卤 0.4% (with a lower limit of 卤0.2 mm)
For example: a product with dimensions of 50 x 50 x 100 mm can be 0.2 mm + 0.005*100 mm = 0.7 mm bigger or smaller in any direction.

Related Materials

Also known as HP PA12 Glass Beads, PA12 GB, Glass-filled PA12, PA12 GF, Nylon 12 GB
MJF Plastic PA12 Glass Beads
Application: Tooling, Robotics, Drones, Fixtures, Medical Braces, Housings, Cases
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