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LCP Type I vs Xydar

Polymer · grade comparison

LCP Type I and Xydar are both polymer grades. Xydar is stiffer (12 GPa vs 11 GPa) and Xydar runs hotter in service (240°C vs 220°C continuous).

XydarChoose it when the part sees heat.

LCP Type I vs Xydar: properties

LCP Type IXydar

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

11 GPa1.6 Msi
12 GPa1.7 Msi

Shear Modulus

1.2 GPa0.17 Msi
—

Poisson's Ratio

0.38
0.35

Tensile Strength (Ultimate)

135 MPa19.6 ksi
130 MPa18.9 ksi

Compressive Modulus

7 GPa1 Msi
—

Flexural Strength

145 MPa21 ksi
135 MPa19.6 ksi

Flexural Modulus

10 GPa1.5 Msi
11 GPa1.6 Msi

Shear Strength

55 MPa8 ksi
50 MPa7.3 ksi

Izod Impact, Notched

180 J/m3.4 ft·lbf/in
160 J/m3 ft·lbf/in

Fracture Toughness (K_IC)

—
2.5 MPa·√m2.3 ksi·√in

Same in both: Elongation at Break 2.5% · Compressive Strength 65 MPa9.4 ksi · Hardness, Shore D 88 Shore D · Hardness, Rockwell M 75 HRM

Physical

Density and transition temperatures.

Density

1.38 g/cm³0.05 lb/in³
1.4 g/cm³0.05 lb/in³

Melting Temperature (Tm)

355°C671 °F
350°C662 °F

Glass Transition (Tg)

145°C293 °F
135°C275 °F

Water Absorption (24 h)

0.02%
0.03%

Same in both: Water Absorption (Saturation) 0.1%

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

0.3 W/m·K0.17 BTU/hr·ft·°F
0.2 W/m·K0.12 BTU/hr·ft·°F

Max Service Temperature (continuous)

220°C428 °F
240°C464 °F

Heat Deflection Temp. @ 0.45 MPa

275°C527 °F
300°C572 °F

Limiting Oxygen Index

40%
42%

Same in both: Specific Heat Capacity 1,150 J/kg·K0.27 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8 µm/m·K4.4 µin/in·°F · Min Service Temperature -100°C-148 °F · Heat Deflection Temp. @ 1.8 MPa 240°C464 °F · Max Service Temperature (short-term) 300°C572 °F

Electrical

Conductivity and insulation.

Dielectric Constant (1 MHz)

3.3
3.7

Dissipation Factor (1 MHz)

0.004
0.005

Same in both: Electrical Resistivity 1×10¹³ Ω·m3.94×10²⁰ µΩ·in · Dielectric Strength 35 kV/mm889 V/mil · 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).

UV / Weathering Resistance

45 / 100
55 / 100

Same in both: Corrosion Resistance 92 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

62 / 100
55 / 100

Weldability

20 / 100
25 / 100

Polishability

45 / 100
40 / 100

Mold Shrinkage

0.1%
0.15%

Processing Melt Temperature (typ.)

385°C725 °F
380°C716 °F

Same in both: Formability (cold) 20 / 100 · Mold Temperature (typ.) 120°C248 °F

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

250 MJ/kg107,481 BTU/lb
220 MJ/kg94,583 BTU/lb

Embodied Carbon (primary production)

9 kg CO₂/kg
10 kg CO₂/kg

Embodied Water

300 L/kg35.9 gal/lb
500 L/kg59.9 gal/lb

Same in both: Typical Recycled Content 0%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

98 kN·m/kg
93 kN·m/kg

Specific Stiffness (E / density)

8 MN·m/kg
8.6 MN·m/kg

Thermal Diffusivity

0.2 mm²/s
0.1 mm²/s

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.

0.1110100123Density (g/cm³)Yield strength (MPa) — log scale

Manufacturing and finishing

CapabilityLCP Type IXydar
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

LCP Type I vs Xydar — frequently asked

What is the difference between LCP Type I and Xydar?

LCP Type I and Xydar are both polymer grades. Xydar is stiffer (12 GPa vs 11 GPa) and Xydar runs hotter in service (240°C vs 220°C continuous).

Which is cheaper, LCP Type I 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, LCP Type I or Xydar?

LCP Type I, by a small margin. Both rate good for machinability — 62/100 against 55/100 for Xydar; for welding the order is Xydar first (poor, 25/100) then LCP Type I (poor, 20/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in LCP Type I 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.