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Product Category

Cork

Coast-Line is the US-approved distributor of Amorim aerospace cork — certified materials engineered for bonding to metal and composite substrates in aerospace thermal protection, vibration isolation, and sealing applications. Three grades: P45, P50, and P65.

Coast-Line International is the US-approved distributor of Amorim TPS aerospace cork — certified materials designed to meet stringent aerospace performance and qualification requirements. Amorim cork is used for thermal insulation, vibration damping, and acoustic attenuation in aerospace assemblies where a natural, lightweight material with excellent compressibility and bond adhesion to metal and composite substrates is required. Available in three density grades: P45, P50, and P65.

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Product Range

Aerospace Product Range

Cork’s chemical constituents and structure make it an ideal ablative material with excellent insulating properties, maintaining low weight-to-low thermal conductivity results.

Characteristics P45 P50 P65
Cork Particle Size (mm)1/20.5/10.5/1
Sheet Dimension (mm / in.)1270×760 · 50×301270×760 · 50×30950×650 · 37×25
Density @ 20°C (Kg/m³ / lb/ft³)300–350 · 19–22448–512 · 28–32580–650 · 36.2–40.6
Tensile Strength (psi / MPa)>125 · >0.86>247 · >1.702.93 · 425
Elongation (%)>30>133
Thermal Conductivity (W/m·K)0.060.070.07 (indicative)
Specific Heat (KJ/Kg/°K)2.52.1On-going
Substrates to BondMetal and Composite

Thermal Insulation

Exceptionally low thermal conductivity — maintains structural integrity under extreme temperature gradients in aerospace environments.

Fire & High-Temp Resistance

Naturally resistant to fire and high temperatures, creating a sturdy char layer that protects the inner material during ablation.

Lightness & Buoyancy

Extraordinary lightness from the high gaseous content of each microscopic cell — critical for launch vehicle weight budgets.

Elastic & Resilient

Compressible and resilient cellular structure acts as a cushion, absorbing mechanical shocks and vibration loads during launch.

Impermeability

Impermeable to liquids and gases, ensuring protection of sensitive cryogenic tanks and structural joints from contamination.

100% Natural & Recyclable

Sourced from the cork oak's bark — a fully renewable, reusable and recyclable raw material harvested without harming the tree.

Precision

Molded P50: Formed for Complex Geometry

Pre-formed to match your exact fairing profile, Molded P50 eliminates the time-consuming fitting and trimming required with flat sheet materials. The result is a seamless, ready-to-bond thermal protection shell that reduces labor, minimizes waste, and ensures consistent coverage across curved and conical surfaces.

Available in custom geometries to match your specific launch vehicle requirements.

Where It's Used

Applications

Booster Nose Cone

Frustum and forward skirt joints protected from extreme aerodynamic heating during ascent phase.

Field Joints

Thermal insulation at critical structural joints of solid rocket boosters to prevent heat transfer.

Fairing

3D-shaped P50 applied directly to the fairing geometry reducing labor and application time.

Cryogenic Tanks

Thermal insulation protecting cryogenic propellant tanks from external heat sources and condensation.

Tunnel & ETR Ring Covers

Covers protecting umbilical connections and ring structures during launch and early flight phases.

Pyro Release / Bolt Catchers

Impact protection from pyrotechnic solutions and debris mitigation across several launch systems.

Why

Main Advantages

Process Friendly

  • Easily bonded to most substrate materials using common adhesive systems
  • Can be trimmed and machined with regular tools, no special protection equipment needed
  • Easily covered with specific coatings or varnishes
  • Easily integrated into CFRP composite sandwiches; no complex fitting techniques required

Custom Materials

  • Cork granules agglomerated with special phenolic binders, tailored to specific requirements (fire-proof, anti-fungi, etc.)
  • Sheet thickness manufactured to customer specifications
  • Specially graded cork granules supplied for customer's own products
  • Orders shipped worldwide from production sites in Europe and North America

Proven Technology

  • Used in TPS applications with ablative heat shields in rocket and space probe entry applications
  • Internal thermal insulation in hot structures
  • Impact protection via debris mitigation and pyrotechnic solutions
  • Flight-proven across the world's leading launch programs, including NASA Artemis and SpaceX Falcon

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