MJF, Polypropylene

Polypropylene (MJF)

HP Multi Jet Fusion [MJF]

Material info

About Polypropylene (MJF)

Polypropylene (PP) is a versatile material ideal for a wide range of automotive, consumer, industrial and medical applications. With its excellent chemical resistance, low moisture absorption and long-term durability, HP High Reusability PP enabled by BASF is ideal for piping, fluid systems and containers. The versatility of this PP material enables the production of prototypes and final parts offering the same properties as PP for injection molding.

Color & Finishes

Gray
A shade of gray that can vary in lightness
Natural
This finish has a slightly rough surface and a matte finish.

Technology

  • HP Multi Jet Fusion [MJF]

Material Properties

Tensile Strength
30 MPa
Heat Deflection Temp (0.45 MPa)
100 ºC
Tensile Modulus
1600 MPa
Elongation at Break
20% (XY), 18% (Z)

Description

Applications
Wide range of automotive, consumer, industrial and medical applications
Properties
Excellent chemical resistance, low moisture absorption and long-term durability

Design Guidelines

Bounding Box

Bounding Box Max
280 x 280 x 280 (mm)

Bounding Box Min
AT LEAST 1 EXTANT DIMENSION OVER 19mm

The bounding box is a 3D 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
1.0 (mm)
Unsupported Wall Thickness Min
1.0 (mm)
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
1.0 (mm)
Unsupported Wires Min
1.0 (mm)
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
0.8 mm high & wide 0.8 mm for readable text mm thick
Details Min Engraved
0.5 mm high & wide 0.5 mm for readable text mm thick
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)
12.0 (mm)
Multiple Escape Hole Diameter (Min)
10.0 (mm)
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
0.8 (mm)
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

3 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

Enclosed
Yes

Parts in File

Max
Up to 250

Accuracy

Accuracy ±0.5 mm + 0.2% of the length
For example: a product with dimensions of 50 x 50 x 100 mm can be 0.5 mm + 0.002*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
Learn More →
Also known as HP Multi Jet Fusion PA12, Professional Plastic, HP Nylon Plastic, PA12, Polyamide
MJF Plastic PA12
Application: Mechanical & structural parts, mounts, cases, eye frames, tech accessories, drone parts, home decor, miniatures, art, prosthetics
Learn More →

Stay up to date on promotions, case studies, and more.