Xydar WHT-LED
Grade
ISO LCP
WHT-LED = high-reflectance white LED-reflector grade
TiO2-pigmented, low-outgassing compound for LED housings that must hold whiteness through reflow and long blue-light exposure.
Values for the WHT-LED condition
Other Xydar grades and fills
Xydar is listed in 11 conditions; see the grade overview at Xydar.
Compare all 11 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Mineral-filled | Pick for very high HDT with isotropic shrinkage, smooth surface and low abrasion of hot-runner tooling. | — | 90 | 1.5 | 90 Shore D |
Bearing / wear grade | Use for high-PV bushings, thrust washers and seal faces running hot and dry. | — | 100 | 1.5 | 88 Shore D |
Glass + mineral hybrid filled | Best choice when the part must survive lead-free reflow with minimal warpage — highest HDT with balanced shrinkage. | — | 110 | 1.4 | 92 Shore D |
WHT-LEDThis page High-reflectance white LED-reflector grade | TiO2-pigmented, low-outgassing compound for LED housings that must hold whiteness through reflow and long blue-light exposure. | — | 110 | 1.5 | 91 Shore D |
Conductive / ESD grade | Specify for IC trays, burn-in sockets and cleanroom fixtures needing controlled surface resistance at high temperature. | — | 120 | 1.5 | 89 Shore D |
NEATDefault Unfilled / natural | Pure LCP resin for thin-wall electrical parts, films and compounding base where maximum toughness and lowest dielectric loss matter. | — | 130 | 2.5 | 88 Shore D |
15 % glass-fiber reinforced | Light reinforcement when higher stiffness is needed but flow into very thin walls must be preserved. | — | 145 | 2.8 | 89 Shore D |
30 % glass-fiber reinforced | The workhorse connector/SMT grade — best balance of strength, stiffness, HDT and moldability. | — | 150 | 2 | — |
50 % glass-fiber reinforced | Highest-modulus glass grade for structural, near-metal-replacement parts; flow and surface finish degrade. | — | 150 | 1.3 | 91 Shore D |
40 % glass-fiber reinforced | Choose for maximum stiffness and load-bearing high-temperature brackets and coil bobbins. | — | 155 | 1.6 | 90 Shore D |
30 % carbon-fiber reinforced | For maximum specific stiffness, low CTE and static-dissipative wafer-handling / semiconductor parts. | — | 190 | 1.2 | 91 Shore D |
What is Xydar WHT-LED?
Xydar WHT-LED is Xydar in the WHT-LED grade — tiO2-pigmented, low-outgassing compound for LED housings that must hold whiteness through reflow and long blue-light exposure. Xydar WHT-LED has a tensile strength of 110 MPa (16 ksi), stronger than 91% of polymer grades. Elongation at break is 1.5% and the elastic modulus is 14 GPa (2.03 Msi). Xydar WHT-LED has a density of 1.85 g/cm³ (0.0668 lb/in³), heavier than 96% of polymer grades. Its glass-transition temperature is 135°C (275 °F). NEAT is the default condition FabDigit quotes; WHT-LED is available on request or by drawing note.
Advantages
- Stiff — 14 GPa (2.03 Msi), better than 98% of polymer grades
- Conducts heat well — 0.5 W/m·K (0.289 BTU/hr·ft·°F), better than 98% of polymer grades
- High service temperature — 250°C (482 °F), better than 94% of polymer grades
- Low, predictable mold shrinkage — 0.2%, better than 94% of polymer grades
- Good corrosion resistance — 92/100, better than 91% of polymer grades
Limitations
- Limited ductility — 1.5%, worse than 98% of polymer grades
- Heavy — 1.85 g/cm³ (0.0668 lb/in³), worse than 96% of polymer grades
- Limited formability — 8/100, worse than 91% of polymer grades
- High embodied carbon — 10 kg CO₂/kg, worse than 90% of polymer grades
- Difficult to machine — 30/100, worse than 87% of polymer grades
Xydar WHT-LED properties
Typical room-temperature values for Xydar WHT-LED; 23 are specific to this condition. Other listed values are Xydar reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
Xydar WHT-LED has a density of 1.85 g/cm³ (0.0668 lb/in³), heavier than 96% of polymer grades. Its glass-transition temperature is 135°C (275 °F).
Mechanical12
Xydar WHT-LED has a tensile strength of 110 MPa (16 ksi), stronger than 91% of polymer grades. Elongation at break is 1.5% and the elastic modulus is 14 GPa (2.03 Msi).
Thermal10
Xydar WHT-LED is rated for continuous service to 250°C (482 °F). It conducts heat at 0.5 W/m·K (0.289 BTU/hr·ft·°F), better than 98% of polymer grades. Thermal expansion is 8 µm/m·K (4.44 µin/in·°F).
Electrical7
Xydar WHT-LED is an electrical insulator with a dielectric strength of 35 kV/mm (889 V/mil) and a resistivity of 1×10¹³ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (92/100), better than 91% of polymer grades. UV resistance is very good.
Sustainability4
Producing a kilogram of Xydar WHT-LED takes about 220 MJ of energy and emits 10 kg of CO₂ — more than 90% of polymer grades. Typical recycled content is 0%.
Manufacturability7
Xydar WHT-LED's machinability is poor (30/100, worse than 87% of polymer grades); weldability poor (15/100); formability not recommended (8/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Xydar WHT-LED
Is Xydar easy to machine?
Machinable from extruded stock with sharp PCD/carbide tooling, high speed and light feed, but the fibrillar skin tends to splinter and glass-filled grades are highly abrasive; avoid sharp internal corners.
Can Xydar be welded?
Ultrasonic and vibration welding give weak joints because of the skin-core morphology and near-zero knit-line strength; laser welding, heat staking with generous bosses or high-temperature adhesives are preferred.
Can Xydar be formed, bent or molded?
Injection mold at 350–400 °C melt with 80–150 °C tools; extremely low melt viscosity fills 0.2 mm walls but demands tight tool venting, minimal clearances to prevent flash, and gate placement that avoids weld lines; dry 3–4 h at 150 °C before molding.
What surface finishes work on Xydar?
Molded surface is a self-skinned, low-friction finish; parts accept laser marking and vacuum metallization or LDS/plating on selected compounds, but paint and adhesive bonding need plasma or chemical pretreatment.
Xydar chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| 4-hydroxybenzoic acid (HBA) unitsprimary mesogenic monomer of Type I wholly aromatic polyester | 50 – 80 | 60 |
| 4,4'-biphenol units | 10 – 25 | 20 |
| terephthalic acid unitsmay be partly replaced by isophthalic acid to tune Tm | 10 – 25 | 20 |
| glass fiber0 % in unfilled default grade; 15–50 % in reinforced grades | 0 – 50 | 0 |
| mineral filler (talc/mica/wollastonite)used in MG / hybrid grades for isotropic shrinkage | 0 – 45 | 0 |
Xydar WHT-LED — frequently asked
What is Xydar WHT-LED used for?
Xydar WHT-LED is typically used for surface-mount sockets, lamp/reflector components, chemical process valve parts and aerospace insulators. In short: highest-heat LCP family; type I wholly aromatic resin; reflow-stable thin-wall parts.
What is the tensile strength of Xydar WHT-LED?
Xydar WHT-LED has a typical tensile strength of 110 MPa (16 ksi) — stronger than 91% of polymer grades. Strength varies by condition: see the 11 listed tempers.
Is Xydar WHT-LED easy to machine?
Not especially — machinability is rated poor (30/100, worse than 87% of polymer grades). Machinable from extruded stock with sharp PCD/carbide tooling, high speed and light feed, but the fibrillar skin tends to splinter and glass-filled grades are highly abrasive; avoid sharp internal corners.
Can Xydar WHT-LED be welded?
Not readily — weldability is rated poor (15/100). Ultrasonic and vibration welding give weak joints because of the skin-core morphology and near-zero knit-line strength; laser welding, heat staking with generous bosses or high-temperature adhesives are preferred.
What surface finishes work on Xydar WHT-LED?
Molded surface is a self-skinned, low-friction finish; parts accept laser marking and vacuum metallization or LDS/plating on selected compounds, but paint and adhesive bonding need plasma or chemical pretreatment.
Can Xydar WHT-LED be formed, bent or molded?
Injection mold at 350–400 °C melt with 80–150 °C tools; extremely low melt viscosity fills 0.2 mm walls but demands tight tool venting, minimal clearances to prevent flash, and gate placement that avoids weld lines; dry 3–4 h at 150 °C before molding.
What is the maximum service temperature of Xydar WHT-LED?
Xydar WHT-LED is rated for continuous use to about 250°C (482 °F), and briefly to 300°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- Xydar LCP product and processing data sheets — Solvay Specialty Polymers (2022)
- Engineered Materials Handbook Vol. 2: Engineering Plastics — Liquid Crystal Polymers — ASM International (1988)
- CAMPUS / UL Prospector LCP grade data — CAMPUS Consortium / UL (2023)
- ISO 527, ISO 178, ISO 75, UL 94, IEC 60243 test methods — ISO / UL / IEC (2021)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.