In plain words
Good for
Fit checks only. Not for a working part.
Not for
Any working part. We use it only to check fit before the real part.
Upright is weaker
A printed part is strongest along its layers (flat, X-Y) and weaker across them (upright, Z). The table shows both. We turn the part so the load runs along the layers.
The full data sheet
Every number on this page is copied from the filament maker's technical data sheet (V3.0). The PDF has the test methods and print settings.
Download the manufacturer's datasheet (PDF)Source: https://store.bblcdn.com/s1/default/58b85d0f3db94878854a28fdb8a0006e/Bambu_PLA_Basic_Technical_Data_Sheet.pdf, linked from the maker's product page. Checked 2026-10-28.
Key numbers
As printed on the maker's data sheet. "Not published" means the data sheet does not give it.
| Property | Flat (X-Y) | Upright (Z) |
|---|---|---|
| Tensile strength | 35 ± 4 MPa | 31 ± 3 MPa |
| Bending strength | 76 ± 5 MPa | 59 ± 6 MPa |
| Stiffness (bending modulus) | 2750 ± 160 MPa | 2370 ± 150 MPa |
Impact strengthISO 179 | 26.6 ± 2.8 kJ/m²; 7.9 ± 1.2 kJ/m² (notched) | 13.8 ± 0.9 kJ/m² |
| Property | Value |
|---|---|
Bends under light load atHDT 0.45 MPa | 57 °C (135 °F) |
Bends under heavier load atHDT 1.8 MPa | 54 °C (129 °F) |
Softening pointVicat | 57 °C (135 °F) |
| Density | 1.24 g/cm³ |
| Water uptake | 0.43% (saturated, 25 °C, 55% RH) |
| Burning | Flammable |
Flame ratingUL 94 | Not published |
| Sunlight (UV) | Not published |
| Acids | Not resistant |
| Alkalis | Not resistant |
| Solvents | Not resistant to some organic solvents |
| Oil and grease | Resistant to most kinds of oil and grease |
Test conditions from the data sheet: Nozzle 220 °C, bed 35 °C, 200 mm/s, 100% infill; annealed and dried at 55 °C for 8 h before testing. These are lab numbers for test bars, not a working limit for your part. The real limit depends on the load, the time at temperature and the shape, which is why we ask about all three.