PEKK-ESD vs Stratasys ULTEM 9085
Polymer · grade comparison
PEKK-ESD and ULTEM 9085 are both polymer grades, both high performance plastic. On the shop floor, ULTEM 9085 sits in a lower cost tier (high, $$$$) than PEKK-ESD (specialty, $$$$$).
ULTEM 9085Choose it when cost is the deciding factor.
PEKK-ESD vs ULTEM 9085: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all polymer grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Properties
Yield strength
Tensile strength
Elongation at break
Elastic modulus (Young's)
Density
Max service temp
Thermal conductivity
Machinability
Weldability
Formability
Same in both: Electrical conductivity 0 % IACS
Strength versus weight
Yield strength against density for every polymer grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | PEKK-ESD | ULTEM 9085 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$$ Specialty | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both are offered for 3D printing. Both take the same 10 finishes: Conductive Coating, Dyeing (Nylon), EMI Shielding Coating, Painting, Primer Coating, Soft Touch Coating, Tinted Coating, UV Coating, Vacuum Metallization, Waterproof Coating.
PEKK-ESD vs ULTEM 9085 — frequently asked
What is the difference between PEKK-ESD and ULTEM 9085?
PEKK-ESD and ULTEM 9085 are both polymer grades, both high performance plastic. On the shop floor, ULTEM 9085 sits in a lower cost tier (high, $$$$) than PEKK-ESD (specialty, $$$$$).
Which is cheaper, PEKK-ESD or ULTEM 9085?
ULTEM 9085 is the lower-cost material: it sits in the high tier ($$$$) while PEKK-ESD is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
When should I choose PEKK-ESD over ULTEM 9085?
Pick ULTEM 9085 when cost is the deciding factor.
Ready to make it?
Upload a CAD file and FabDigit prices the part in PEKK-ESD and ULTEM 9085 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.