Plastic PLA

Plastic PLA strength, stiffness, density and thermal properties, with their source.

A bracket in Plastic PLA, 3D-printed (layer lines) finish.

Mechanical
Process	3D printed (FDM)
Yield strength	52.5MPasourcetypical
Ultimate tensile strength	52.5MPasourcetypical, peak stress (= stress at yield)
Flexural strength	96.8MPasourcetypical
Elongation at break	7.8%sourcetypical
Young's modulus (stiffness)	3.25GPasourcetypical
Density	1,240kg/m³sourcetypical
Strength to weight	42.3kN·m/kg
Stiffness to weight	2.62MN·m/kg
Poisson's ratio	not sourced
Shear modulus	not sourced
Bulk modulus	not sourced
Speed of sound	1,619m/s
Thermal
Thermal conductivity	0.13W/m·Ksourcebase material: NatureWorks Ingeo biopolymer, amorphous sheet, 25 °C
Thermal expansion	not sourced
100 mm part over a 50 °C swing	not sourced
Specific heat	1,200J/kg·Ksourcebase material: NatureWorks Ingeo biopolymer, amorphous sheet, 25 °C
Heats up and cools (diffusivity)	0.0874mm²/s
Thermal shock resistance	not sourced
Melting point	152°Csourcetypical
Glass transition	59.1°Csourcetypical
Max service temperature	58.8°CsourceHDT 0.455 MPa (printed specimens)
Values for	Ultimaker PLA, 3D-printed specimens, XY (flat) orientation; Ultimaker S5 Pro, engineering intent profile, 0.15 mm layer height, AA 0.4 print core, 100% infill, Cura 4.9, printed one-at-a-time, conditioned >=24 h at room temperature. TDS dated April 20, 2022.

Plastic PLA is 3D printed: its properties depend on build direction and print settings; these are typical values.

Among 59 materials

Stiffness against density

Strength against density