Laperos LD-RF
Grade
ISO LCP
LD-RF = low-dielectric / high-frequency grade
Choose for antenna carriers, mmWave connectors and MID parts where low Dk/Df at GHz frequencies is the governing property.
Values for the LD-RF condition
Other Laperos grades and fills
Laperos is listed in 13 conditions; see the grade overview at Laperos.
Compare all 13 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
Mineral filled | Pick for isotropic shrinkage, low warpage and good surface on flat covers and shields where strength can be traded away. | — | 110 | 1.5 | — |
Lubricated / low-wear grade | Pick for small unlubricated bearings, bushes and sliding electronics parts needing low friction at 150–200 °C. | — | 120 | 1.8 | 86 Shore D |
GF + mineral hybrid, low-warpage high-heat | Best compromise for large flat SMT parts that must survive lead-free reflow with minimal warpage and dimensional drift. | — | 130 | 1.6 | — |
15% glass-fiber reinforced | Use when some toughness and easier flow into very thin walls matter more than stiffness. | — | 145 | 3 | — |
halogen-free flame retardant listing (thin-section V-0) | Specify when UL 94 V-0 at 0.2–0.4 mm plus RTI listing is a contractual requirement; LCP achieves it without added halogen or phosphorus. | — | 145 | 2 | 88 Shore D |
ESD / conductive | Use for IC trays, burn-in sockets and handling parts needing static dissipation at high temperature. | — | 145 | 1.6 | 89 Shore D |
High-heat series | Choose when parts see 260–290 °C reflow, hot-solder dipping or continuous >230 °C service and higher melt processing temperature is acceptable. | — | 150 | 1.8 | 89 Shore D |
High-flow thin-wall grade | Pick for fine-pitch connectors and micro-parts where fill of sub-0.3 mm walls and long flow paths dominates the design. | — | 150 | 2.2 | 87 Shore D |
LD-RFThis page Low-dielectric / high-frequency grade | Choose for antenna carriers, mmWave connectors and MID parts where low Dk/Df at GHz frequencies is the governing property. | — | 150 | 2 | 87 Shore D |
40% glass-fiber reinforced | Choose for maximum stiffness, lowest CTE and highest HDT where flow length is short and brittleness is acceptable. | — | 160 | 1.8 | — |
GF30Default 30% glass-fiber reinforced | The industry default: best all-round balance of flow, stiffness, reflow resistance and price for SMT connectors and coil bobbins. | — | 165 | 2.5 | — |
Unfilled / Natural | Pick when maximum toughness, near-zero CTE in flow direction, lowest dielectric loss or film/fiber extrusion is needed; rarely used for structural injection parts. | — | 175 | 3.5 | — |
Carbon-fiber reinforced | Use for maximum specific stiffness, dimensional stability and semi-conductive/EMI parts such as test sockets and probe housings. | — | 180 | 1.4 | — |
What is Laperos LD-RF?
Laperos LD-RF is Laperos in the LD-RF grade — choose for antenna carriers, mmWave connectors and MID parts where low Dk/Df at GHz frequencies is the governing property. Laperos LD-RF has a tensile strength of 150 MPa (21.8 ksi), stronger than 95% of polymer grades. Elongation at break is 2% and the elastic modulus is 12 GPa (1.74 Msi). Laperos LD-RF has a density of 1.55 g/cm³ (0.056 lb/in³), heavier than 91% of polymer grades. Its glass-transition temperature is 120°C (248 °F). GF30 is the default condition FabDigit quotes; LD-RF is available on request or by drawing note.
Advantages
- Stiff — 12 GPa (1.74 Msi), better than 98% of polymer grades
- Low, predictable mold shrinkage — 0.12%, better than 98% of polymer grades
- Low moisture uptake — 0.02%, better than 92% of polymer grades
- High service temperature — 220°C (428 °F), better than 89% of polymer grades
- Conducts heat well — 0.3 W/m·K (0.173 BTU/hr·ft·°F), better than 83% of polymer grades
Limitations
- Limited ductility — 2%, worse than 95% of polymer grades
- Heavy — 1.55 g/cm³ (0.056 lb/in³), worse than 91% of polymer grades
- High embodied carbon — 9 kg CO₂/kg, worse than 88% of polymer grades
- Difficult to machine — 44/100, worse than 80% of polymer grades
- Limited formability — 15/100, worse than 79% of polymer grades
Laperos LD-RF properties
Typical room-temperature values for Laperos LD-RF; 25 are specific to this condition. Other listed values are Laperos reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
Laperos LD-RF has a density of 1.55 g/cm³ (0.056 lb/in³), heavier than 91% of polymer grades. Its glass-transition temperature is 120°C (248 °F).
Mechanical10
Laperos LD-RF has a tensile strength of 150 MPa (21.8 ksi), stronger than 95% of polymer grades. Elongation at break is 2% and the elastic modulus is 12 GPa (1.74 Msi).
Thermal10
Laperos LD-RF is rated for continuous service to 220°C (428 °F). It conducts heat at 0.3 W/m·K (0.173 BTU/hr·ft·°F), better than 83% of polymer grades. Thermal expansion is 8 µm/m·K (4.44 µin/in·°F).
Electrical7
Laperos LD-RF is an electrical insulator with a dielectric strength of 35 kV/mm (889 V/mil) and a resistivity of 1×10¹⁴ Ω·m.
Chemical & Environmental3
Corrosion resistance is excellent (90/100), better than 82% of polymer grades. UV resistance is fair.
Sustainability3
Producing a kilogram of Laperos LD-RF takes about 190 MJ of energy and emits 9 kg of CO₂ — more than 88% of polymer grades. Typical recycled content is 0%.
Manufacturability7
Laperos LD-RF's machinability is fair (44/100, worse than 80% of polymer grades); weldability poor (25/100); formability poor (15/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Laperos LD-RF
Is Laperos easy to machine?
Machines cleanly but is abrasive and prone to skin delamination and chipping — use sharp carbide/diamond tooling, high speed, light feed and support thin walls; molded-in features are preferred to machining.
Can Laperos be welded?
Not solvent- or hot-plate weldable in practice; laser and ultrasonic welding work only with joint design allowing for very weak, highly oriented weld interfaces — snap-fits, insert molding and adhesive-free press fits are the norm.
Can Laperos be formed, bent or molded?
Dry 3–4 h at 130–150 °C, melt 290–330 °C (high-heat series 340–390 °C), mold 60–130 °C, very fast injection with generous venting; design for near-zero flow shrinkage but 4–8× higher transverse shrinkage and place gates to control weld lines.
What surface finishes work on Laperos?
Accepts vacuum metallization, sputtering, LDS/laser-activated plating and reflow soldering directly; painting and adhesive bonding need plasma or corona pre-treatment because the surface is chemically inert and fibrous.
Laperos 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 |
|---|---|---|
| p-hydroxybenzoic acid (HBA) unitprincipal rigid-rod aromatic ester monomer | 45 – 80 | 60 |
| aromatic diol (4,4'-biphenol / hydroquinType E chemistry | 5 – 20 | 12 |
| terephthalic / isophthalic acid unitType E chemistry | 5 – 20 | 12 |
| 6-hydroxy-2-naphthoic acid (HNA) unitType A chemistry (alternative comonomer) | 0 – 35 | 25 |
| glass fiberchopped E-glass, default GF30 grade | 0 – 45 | 30 |
| mineral filler (talc/mica/wollastonite)in low-warpage / mineral series | 0 – 45 | 0 |
| polymer matrixbalance is the wholly aromatic thermotropic polyester | balance | — |
Laperos LD-RF — frequently asked
What is Laperos LD-RF used for?
Laperos LD-RF is typically used for smartphone antenna carriers, SMT connectors, micro-gears and sensor housings. In short: high-flow thin-wall LCP; wide functional grade range; reflow-compatible molded parts.
What is the tensile strength of Laperos LD-RF?
Laperos LD-RF has a typical tensile strength of 150 MPa (21.8 ksi) — stronger than 95% of polymer grades. Strength varies by condition: see the 13 listed tempers.
Is Laperos LD-RF easy to machine?
Not especially — machinability is rated fair (44/100, worse than 80% of polymer grades). Machines cleanly but is abrasive and prone to skin delamination and chipping — use sharp carbide/diamond tooling, high speed, light feed and support thin walls; molded-in features are preferred to machining.
Can Laperos LD-RF be welded?
Not readily — weldability is rated poor (25/100). Not solvent- or hot-plate weldable in practice; laser and ultrasonic welding work only with joint design allowing for very weak, highly oriented weld interfaces — snap-fits, insert molding and adhesive-free press fits are the norm.
What surface finishes work on Laperos LD-RF?
Accepts vacuum metallization, sputtering, LDS/laser-activated plating and reflow soldering directly; painting and adhesive bonding need plasma or corona pre-treatment because the surface is chemically inert and fibrous.
Can Laperos LD-RF be formed, bent or molded?
Dry 3–4 h at 130–150 °C, melt 290–330 °C (high-heat series 340–390 °C), mold 60–130 °C, very fast injection with generous venting; design for near-zero flow shrinkage but 4–8× higher transverse shrinkage and place gates to control weld lines.
What is the maximum service temperature of Laperos LD-RF?
Laperos LD-RF is rated for continuous use to about 220°C (428 °F), and briefly to 280°C. Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- LAPEROS Liquid Crystal Polymer product and grade datasheets — Polyplastics Co., Ltd. (2024)
- CAMPUS plastics datasheets — LCP GF30 / mineral-filled grades (ISO 10350-1) — CWFG / CAMPUS (2024)
- Engineered Materials Handbook, Vol. 2: Engineering Plastics — liquid crystal polymers — ASM International (1988)
- ISO 527-1/-2, ISO 178, ISO 75-1/-2, ISO 180 test methods — ISO (2019)
- UL 94 Tests for Flammability of Plastic Materials (Yellow Card listings for LCP) — UL Solutions (2023)
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.