Sumikasuper vs Xydar
Polymer · grade comparison
Sumikasuper and Xydar are both polymer grades. Sumikasuper is the stronger of the two: tensile strength 160 MPa (23.2 ksi) against 130 MPa (18.9 ksi) for Xydar, about 23% more. In exchange, Xydar is the more ductile: elongation 2.5% versus 2.2% for Sumikasuper. Xydar is lighter (1.4 g/cm³ vs 1.62 g/cm³ for Sumikasuper) and Sumikasuper is stiffer (14 GPa vs 12 GPa). On the shop floor, Xydar machines more easily (good vs fair).
SumikasuperChoose it when strength drives the design.
XydarChoose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Sumikasuper vs Xydar: 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
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Flexural Strength
Flexural Modulus
Izod Impact, Notched
Hardness, Rockwell M
Shear Strength
Fracture Toughness (K_IC)
Same in both: Poisson's Ratio 0.35 · Hardness, Shore D 88 Shore D
Physical
Density and transition temperatures.
Density
Melting Temperature (Tm)
Glass Transition (Tg)
Water Absorption (24 h)
Water Absorption (Saturation)
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Max Service Temperature (continuous)
Min Service Temperature
Heat Deflection Temp. @ 0.45 MPa
Heat Deflection Temp. @ 1.8 MPa
Limiting Oxygen Index
Same in both: Thermal Expansion (CTE, 20–100 °C) 8 µm/m·K4.4 µin/in·°F · Max Service Temperature (short-term) 300°C572 °F
Electrical
Conductivity and insulation.
Dielectric Strength
Dielectric Constant (1 MHz)
Dissipation Factor (1 MHz)
Same in both: Electrical Resistivity 1×10¹³ Ω·m3.94×10²⁰ µΩ·in · Volume Resistivity 1×10¹⁵ Ω·cm · Surface Resistivity 1×10¹⁵ Ω · Comparative Tracking Index (CTI) 200 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
Mold Shrinkage
Melt Flow Rate
Processing Melt Temperature (typ.)
Mold Temperature (typ.)
Same in both: Formability (cold) 20 / 100 · Polishability 40 / 100
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)
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Stiffness (E / density) 8.6 MN·m/kg
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 | Sumikasuper | Xydar |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Sumikasuper vs Xydar — frequently asked
Is Sumikasuper stronger than Xydar?
Yes. Sumikasuper has a typical tensile strength of 160 MPa (23.2 ksi) against 130 MPa (18.9 ksi) for Xydar — about 23% more.
Which is cheaper, Sumikasuper or Xydar?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Sumikasuper or Xydar?
Xydar. Its machinability rates good (55/100) against fair (45/100) for Sumikasuper; for welding the order is Sumikasuper first (poor, 30/100) then Xydar (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Sumikasuper and Xydar 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.