Extem XH1015 vs Ultem 1000
Polymer · grade comparison
Extem XH1015 and Ultem 1000 are both polymer grades. Extem XH1015 is the stronger of the two: yield strength 115 MPa (16.7 ksi) against 105 MPa (15.2 ksi) for Ultem 1000, about 10% more; tensile strength follows at 115 MPa (16.7 ksi) vs 105 MPa (15.2 ksi). In exchange, Ultem 1000 is the more ductile: elongation 60% versus 30% for Extem XH1015. Ultem 1000 is lighter (1.27 g/cm³ vs 1.31 g/cm³ for Extem XH1015) and Extem XH1015 is stiffer (3.6 GPa vs 3.2 GPa). On the shop floor, Ultem 1000 machines more easily (65 vs 55 out of 100) and Ultem 1000 welds better (good vs fair).
Extem XH1015Choose it when strength drives the design, or when the part sees heat.
Ultem 1000Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Extem XH1015 vs Ultem 1000: 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.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Compressive Modulus
Flexural Strength
Flexural Modulus
Fracture Toughness (K_IC)
Izod Impact, Notched
Hardness, Shore D
Hardness, Rockwell M
Bulk Modulus
Hardness, Rockwell R
Same in both: Shear Strength 90 MPa13.1 ksi
Physical
Density and transition temperatures.
Density
Glass Transition (Tg)
Water Absorption (24 h)
Water Absorption (Saturation)
Refractive Index
Light Transmission
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Vicat Softening Point (B50)
Limiting Oxygen Index
Max Service Temperature (short-term)
Same in both: Thermal Conductivity 0.22 W/m·K0.13 BTU/hr·ft·°F · Min Service Temperature -50°C-58 °F
Electrical
Conductivity and insulation.
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Same in both: Electrical Resistivity 1×10¹⁵ Ω·m3.94×10²² µΩ·in · Volume Resistivity 1×10¹⁷ Ω·cm · Surface Resistivity 1×10¹⁶ Ω · Comparative Tracking Index (CTI) 175 V
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
UV / Weathering Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Polishability
Melt Flow Rate
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Same in both: Mold Shrinkage 0.6%
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 0%
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Thermal Shock Resistance Index 0
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 | Extem XH1015 | Ultem 1000 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Extem XH1015 vs Ultem 1000 — frequently asked
Is Extem XH1015 stronger than Ultem 1000?
Yes. Extem XH1015 has a typical yield strength of 115 MPa (16.7 ksi) against 105 MPa (15.2 ksi) for Ultem 1000 — about 10% more. Tensile strength is 115 MPa (16.7 ksi) vs 105 MPa (15.2 ksi).
Which is cheaper, Extem XH1015 or Ultem 1000?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Extem XH1015 or Ultem 1000?
Ultem 1000, by a small margin. Both rate good for machinability — 65/100 against 55/100 for Extem XH1015; for welding the order is Ultem 1000 first (good, 60/100) then Extem XH1015 (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Extem XH1015 and Ultem 1000 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.