LCP-MF MF20
Reinforced grade
ASTM D6779
MF20 = 20% mineral filled
Pick when maximum flow into ultra-thin walls (<0.3 mm) matters more than stiffness.
Values for the MF20 condition
Other LCP-MF grades and fills
LCP-MF is listed in 8 conditions; see the grade overview at LCP-MF.
Compare all 8 grades and fillsHide
| Grade · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness |
|---|---|---|---|---|---|
40% mineral filled, high stiffness / high dimensional stability | Pick for the flattest parts and lowest CTE where brittleness and higher density are acceptable. | — | 105 | 1.5 | — |
Laser direct structuring / platable mineral-filled grade | Pick for MID/antenna parts where circuit traces are laser-activated and copper-plated on the molded body. | — | 105 | 1.8 | 86 HRM |
High-heat (Type I / high-Tm) mineral-filled base resin | Pick for lead-free reflow, high-temperature bake-out or continuous use above 240 °C. | — | 110 | 1.8 | 87 HRM |
High-flow thin-wall grade | Pick for 0.2–0.4 mm wall FPC/board-to-board connectors with long flow lengths. | — | 110 | 2.2 | 84 HRM |
ESD / conductive | Pick for IC trays, burn-in sockets and handling parts needing static dissipation at high temperature. | — | 110 | 1.6 | 86 HRM |
MF30Default 30% mineral filled | Default balanced grade: low, isotropic shrinkage for flat connectors, sockets and covers. | — | 115 | 2 | 85 HRM |
MF20This page 20% mineral filled | Pick when maximum flow into ultra-thin walls (<0.3 mm) matters more than stiffness. | — | 125 | 2.6 | — |
GF/MF hybrid | Pick when GF-level strength is needed but pure GF warpage/anisotropy is unacceptable. | — | 145 | 2 | 88 HRM |
What is LCP-MF MF20?
LCP-MF MF20 is LCP-MF in the MF20 grade — pick when maximum flow into ultra-thin walls (<0.3 mm) matters more than stiffness. LCP-MF MF20 has a tensile strength of 125 MPa (18.1 ksi), stronger than 93% of polymer grades. Elongation at break is 2.6% and the elastic modulus is 11 GPa (1.6 Msi). LCP-MF MF20 has a density of 1.72 g/cm³ (0.0621 lb/in³), heavier than 95% of polymer grades. Its glass-transition temperature is 120°C (248 °F). MF30 is the default condition FabDigit quotes; MF20 is available on request or by drawing note.
Advantages
- Stiff — 11 GPa (1.6 Msi), better than 97% of polymer grades
- Conducts heat well — 0.45 W/m·K (0.26 BTU/hr·ft·°F), better than 97% of polymer grades
- Good corrosion resistance — 92/100, better than 91% of polymer grades
- High service temperature — 220°C (428 °F), better than 89% of polymer grades
- Low moisture uptake — 0.03%, better than 88% of polymer grades
Limitations
- Heavy — 1.72 g/cm³ (0.0621 lb/in³), worse than 95% of polymer grades
- Limited ductility — 2.6%, worse than 86% of polymer grades
- High embodied carbon — 8.5 kg CO₂/kg, worse than 85% of polymer grades
- Limited formability — 15/100, worse than 79% of polymer grades
LCP-MF MF20 properties
Typical room-temperature values for LCP-MF MF20; 10 are specific to this condition. Other listed values are LCP-MF reference data and may not represent this condition. Bars are the position among polymer grades.
Physical5
LCP-MF MF20 has a density of 1.72 g/cm³ (0.0621 lb/in³), heavier than 95% of polymer grades. Its glass-transition temperature is 120°C (248 °F).
Mechanical11
LCP-MF MF20 has a tensile strength of 125 MPa (18.1 ksi), stronger than 93% of polymer grades. Elongation at break is 2.6% and the elastic modulus is 11 GPa (1.6 Msi).
Thermal10
LCP-MF MF20 is rated for continuous service to 220°C (428 °F). It conducts heat at 0.45 W/m·K (0.26 BTU/hr·ft·°F), better than 97% of polymer grades. Thermal expansion is 25 µm/m·K (13.9 µin/in·°F).
Electrical7
LCP-MF MF20 is an electrical insulator with a dielectric strength of 32 kV/mm (812.8 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 fair.
Sustainability4
Producing a kilogram of LCP-MF MF20 takes about 175 MJ of energy and emits 8.5 kg of CO₂ — more than 86% of polymer grades. Typical recycled content is 0%.
Manufacturability8
LCP-MF MF20's machinability is fair (50/100, worse than 73% 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 LCP-MF MF20
Is LCP-MF easy to machine?
Machinable but the mineral filler is abrasive and the skin-core structure splinters — use sharp carbide/diamond tooling, high speed, light feed, and avoid deep threads.
Can LCP-MF be welded?
Weld lines and joints are inherently weak due to molecular orientation; prefer snap fits, heat staking or adhesive over ultrasonic/laser welding for structural joints.
Can LCP-MF be formed, bent or molded?
Injection mold at 320–360 °C melt / 80–150 °C tool with fast fill, dried pellets (150 °C, 3–4 h), well-vented hardened tool steel and gates positioned to place weld lines in low-stress areas.
What surface finishes work on LCP-MF?
Molds to a good as-molded finish; paint and adhesive bonding need plasma or primer pretreatment, and dedicated LDS grades are used when selective copper plating is required.
LCP-MF 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 |
|---|---|---|
| mineral filler (talc / mica / wollastoniplaty or acicular filler for shrinkage balance | 20 – 40 | 30 |
| pigment, lubricant, nucleant, stabilizercarbon black or TiO2 plus processing aids | 0 – 2 | 0.8 |
| aromatic copolyester LCP resin (HBA/HNA wholly aromatic thermotropic polyester matrix | ≥ 55 (balance) | — |
LCP-MF MF20 — frequently asked
What is LCP-MF MF20 used for?
LCP-MF MF20 is typically used for low-warpage connector housings, precision optical mounts and thin-wall enclosures. In short: low-warpage LCP grade; balanced flow/cross-flow shrinkage; cheaper than glass-filled LCP.
What is the tensile strength of LCP-MF MF20?
LCP-MF MF20 has a typical tensile strength of 125 MPa (18.1 ksi) — stronger than 93% of polymer grades. Strength varies by condition: see the 8 listed tempers.
Is LCP-MF MF20 easy to machine?
Reasonably — machinability is rated fair (50/100, worse than 73% of polymer grades). Machinable but the mineral filler is abrasive and the skin-core structure splinters — use sharp carbide/diamond tooling, high speed, light feed, and avoid deep threads.
Can LCP-MF MF20 be welded?
Not readily — weldability is rated poor (25/100). Weld lines and joints are inherently weak due to molecular orientation; prefer snap fits, heat staking or adhesive over ultrasonic/laser welding for structural joints.
What surface finishes work on LCP-MF MF20?
Molds to a good as-molded finish; paint and adhesive bonding need plasma or primer pretreatment, and dedicated LDS grades are used when selective copper plating is required.
Can LCP-MF MF20 be formed, bent or molded?
Injection mold at 320–360 °C melt / 80–150 °C tool with fast fill, dried pellets (150 °C, 3–4 h), well-vented hardened tool steel and gates positioned to place weld lines in low-stress areas.
What is the maximum service temperature of LCP-MF MF20?
LCP-MF MF20 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
- ASTM D5138 — Classification System for Liquid-Crystal Polymer (LCP) Molding and Extrusion Materials — ASTM International (2019)
- Vectra LCP mineral-filled grades (MT series) product data — Celanese (2023)
- LAPEROS LCP molding and property guide — Polyplastics (2023)
- Sumikasuper LCP grade list — Sumitomo Chemical (2023)
- CAMPUS plastics database — LCP mineral-filled datasets (ISO 527/178/75/180) — CAMPUS / CWFG (2024)
- Engineered Materials Handbook Vol.2: Engineering Plastics — ASM International (1988)
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.