EOS PrimePart ST (PEBA 2301) (TPA (PEBA), SLS)
EOS · SLS powder · discontinued
EOS's TPA (PEBA) powder for Selective Laser Sintering.
EOS datasheet values, printed parts
Other TPA (PEBA) grades and fills
Compare the TPA (PEBA) products and conditions in the library; see the grade overview at TPA (PEBA).
Compare all 13 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
E-TPA | Specify the expanded bead foam at 0.18 density for ultralight running midsoles and impact cushioning, where rebound typically exceeds E-TPU; modulus is only 0.004 GPa. | — | 2 | 130 | 40 Shore A |
EOS PrimePart ST (PEBA 2301)This page SLS powder | — | — | 8 | 200 | 35 Shore D |
HP 3D High Reusability TPA (enabled by Evonik) · MJF powder | A lightweight flexible polyamide elastomer with high rebound and uniform properties for resilient production parts. | — | 10 | 250 | 91 Shore A |
Shore D 55 | Use the medium Shore D 55 level for structural elastic parts, ski boot liners and gear or coupling dampers that need 48 MPa tensile with 500 % elongation. | 15 | 48 | 500 | 55 Shore D |
Bio-based PEBA | Choose the bio-based version built on a castor-oil PA11 hard block for sustainable footwear and consumer goods; renewable carbon is high and mechanicals match standard Shore D 55 material. | 16 | 45 | 500 | 55 Shore D |
UNFDefault Unfilled / Natural | Use the unfilled natural grade as the default for injection molding and extrusion — Shore D 60 with 52 MPa tensile and 430 % elongation suits shoe midsoles, functional parts and tubing. | 20 | 52 | 430 | 60 Shore D |
Shore D 63 | Choose the stiff Shore D 63 level, 0.29 GPa modulus and 24 MPa yield, for high-stiffness resilient sheet and plates and sporting-goods spring elements; elongation drops to 400 %. | 24 | 55 | 400 | 63 Shore D |
Heat-stabilized grade | Use the heat-stabilized grade with its reinforced antioxidant package to improve retention of the polyether soft segment under long-term ageing at 80–100 °C, with service to 95 °C. | 24 | 52 | 360 | 63 Shore D |
Shore D 72 | Pick the hardest standard level — Shore D 72, 0.51 GPa modulus, 58 MPa tensile — for racing-shoe carbon-plate liners and high-stiffness elastic hinges; elongation is reduced to 350 %. | 31 | 58 | 350 | 72 Shore D |
Shore D 25 | Pick the softest level, Shore D 25 (≈75–80 Shore A) with 750 % elongation and 0.017 GPa modulus, for high-rebound cushioning, catheter soft tips and flexible films; service temp falls to 65 °C. | — | 34 | 750 | 25 Shore D |
Shore D 35 | Choose Shore D 35 for soft extrusion and blown film — medical tubing, breathable membranes and soft grips — where 700 % elongation matters more than the 70 °C temperature limit. | — | 38 | 700 | 35 Shore D |
Transparent / clear PEBA grade | Use the clear grade for sports eyewear nose pads, transparent upper components and soft-touch transparent overmolding at Shore D 40, 40 MPa tensile and 500 % elongation. | — | 40 | 500 | 40 Shore D |
Shore D 40 | Pick Shore D 40 when rebound and flexibility must be balanced, as in running midsoles, air-retention bladders and hoses; it gives 45 MPa tensile with 640 % elongation. | — | 45 | 640 | 40 Shore D |
What is EOS PrimePart ST (PEBA 2301)?
EOS PrimePart ST (PEBA 2301) is EOS' TPA (PEBA) powder for Selective Laser Sintering on EOS FORMIGA P 110 / P 396 / P 500 / P 770. EOS PrimePart ST (PEBA 2301) has a tensile strength of 8 MPa (1.16 ksi), weaker than 81% of polymer grades. Elongation at break is 200% and the elastic modulus is 0.075 GPa (0.0109 Msi). EOS PrimePart ST (PEBA 2301) has a density of 0.95 g/cm³ (0.0343 lb/in³), lighter than 75% of polymer grades.
Advantages
- Ductile — tolerates forming and impact — 200%, better than 76% of polymer grades
- Lightweight — 0.95 g/cm³ (0.0343 lb/in³), better than 75% of polymer grades
About this powder
- Manufacturer
- EOS
- Product
- PrimePart ST (PEBA 2301)
- Base polymer
- TPA (PEBA)
- Process
- Selective Laser Sintering (SLS)
- Printers
- EOS FORMIGA P 110 / P 396 / P 500 / P 770
- As-printed colour
- White; dyeing options depend on the base colour and grade
- Build envelope
- 340 × 340 × 600 mm. Usable part size depends on orientation, spacing and process allowances.
- Build atmosphere
- Inert atmosphere specified; confirm the gas and settings for the printer/material profile.
- Manufacturer data source
- EOS source reference
- FabDigit material reference
- Download reference PDF — FabDigit layout with EOS data and source attribution.
- Ordering
- Discontinued by EOS; kept for reference and existing designs.
EOS PrimePart ST (PEBA 2301) properties
Typical values for EOS PrimePart ST (PEBA 2301); review each property’s test condition. Only this product’s reported properties are shown; unreported properties are omitted. Bars are the position among polymer grades.
Mechanical4
EOS PrimePart ST (PEBA 2301) has a tensile strength of 8 MPa (1.16 ksi), weaker than 81% of polymer grades. Elongation at break is 200% and the elastic modulus is 0.075 GPa (0.0109 Msi).
per ISO 527
per ISO 527
per ISO 527
per ISO 868; 15 s
Physical1
EOS PrimePart ST (PEBA 2301) has a density of 0.95 g/cm³ (0.0343 lb/in³), lighter than 75% of polymer grades.
per EOS Method
Use published values for design screening. Confirm the grade, build direction, conditioning and available lot documentation when quoting.
Sources
Product values come from the selected manufacturer source and are normalised for comparison. Confirm the quoted process, build direction, conditioning and available lot documentation for the finished part.