Prusa Research Prusament PLA is a polylactic acid filament grade printed by fused deposition modeling, extruded through a heated nozzle as beads laid down layer by layer. Printed parts are anisotropic, with weaker bonding between layers than along the beads, and show visible layer lines and small voids between beads. PLA warps little, so it prints readily without an enclosed chamber, though overhangs need removable supports. Parts are used for prototypes, fit-check models, jigs, fixtures and housings that see modest temperatures and loads. Every value on this page is read from Prusa Research's own material data sheet — quoted, cited and dated — and is the maker's statement about printed material, not a measurement by MatWorld; none has yet been reviewed by a person.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Flexural Modulus(Ef)2 entries | 3.100 range 3.000–3.200 | GPa | ISO 178 · XY | ||
| ↳ | 3.200 range 3.100–3.300 | GPa | Vertical xz · ISO 178 | ||
Flexural Strength (MOR)(σf)2 entries | 83.00 range 77.00–89.00 | MPa | ISO 178 · XY | ||
| ↳ | 99.00 range 98.00–100.0 | MPa | Vertical xz · ISO 178 | ||
Hardness (Shore D)(Shore D) | 81.00 | Shore D | notes | ||
Yield Strength (0.2% offset)(σy)3 entries | 57.00 range 56.00–58.00 | MPa | Tensile Yield Strength for Filament · ISO 527 | ||
| ↳ | 51.00 range 48.00–54.00 | MPa | ISO 527-1 · XY | ||
| ↳ | 59.00 range 57.00–61.00 | MPa | Vertical xz · ISO 527-1 | ||
Young's Modulus(E)2 entries | 2.300 range 2.200–2.400 | GPa | ISO 527-1 · XY | ||
| ↳ | 2.400 range 2.300–2.500 | GPa | Vertical xz · ISO 527-1 |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 330.7 range 328.2–333.2 | K | notes | ||
Heat Deflection Temperature(HDT)2 entries | 328.2 | K | 0.45 MPa load · ISO 75 | ||
| ↳ | 328.2 | K | 1.8 MPa load · ISO 75 | ||
Melting Point / Solidus(Tm) | 438.2 range 423.2–453.2 | K | notes | ||
Maximum Service Temperature(Tmax) | 328.2 | K | notes |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Density(ρ) | 1.240 | kg/m³ | ISO 1183 | ||
Water Absorption(WA)2 entries | 0.1300 | % | 24°C · Moisture Absorption in 24 hours | ||
| ↳ | 0.1900 | % | 24°C · Moisture Absorption in 7 days |
Reference data from cited sources. Not verified or certified by MatWorld Inc. Verify against the source before use in design. Terms: engineering data