PLA
Polylactic Acid, more commonly known as PLA, is one of the most frequently used materials in 3D printing. Its popularity comes from its ease of use, organic nature, and relatively strong mechanical properties. PLA is also inexpensive making it a great entry-level material. PLA is made up of naturally occurring, organic lactic acid chains which generally makes it useful in organic settings such as medical applications. Its chemical nature also makes it easy to recycle and reuse. PLA also boasts strong mechanical properties and user-friendly thermal properties that make it easy to print with. For those looking for a place to start in additive manufacturing, PLA is an excellent choice.
Young's Modulus
2,315 - 3,138 MPa
Tensile Elongation
3.31 - 4.00 %
Ultimate Tensile Strength
50 - 65 MPa
Notched Izod Impact Strength
118 J/m
Shrinkage Rate below 0.5%
0.0002 mm/mm
Glass Transition Temperature
57 - 60 ºC
Heat Distortion (0.45MPa)
80 - 90 ºC
Decomposition Temperature
250 ºC
Extruder Temperature
210 ºC
Heated Bed Temperature
60 ºC
Bed Adhesion
Nothing Extra Required
Enclosure
Do Not Use
Fans
On
Printing Speed
3,600 mm/min
PLA is created from organic sources, making it sustainable to produce. It is possible to recycle through composting. Furthermore, PLA is easily reused if ground up and reused in pellet printers such as GBX. PLA can only be reused a limited amount of times due to its compostable nature. PLA is not easily recycled at commercial recycling centers due to it being lumped into code 7, “other plastics”, in the resin identification number system.
- PLA is very dimensionally stable and can produce good prints without much work. However, be sure to add brims and adhesive if your part geometry is large or complex. Large and dense PLA prints can still have warping issues!
- PLA, being one of the most common materials on the market, is often compatible with most supporting products and open source designs. If you are unsure what material to use for an open source design, or what material to use with certain products like adhesives, PLA is a safe choice.
MCPP