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Densified Wood Lignostone® Laminate

High Load‑Bearing Capability
Stable Electrical Properties Over Time

High‑strength natural insulation for electrical and structural applications

Lignostone® is a densified laminated wood composite engineered for high mechanical strength and reliable electrical insulation. Manufactured from carefully selected beech veneers impregnated with thermosetting phenolic resins and compressed under heat and pressure, Lignostone® combines the benefits of a natural material with consistent, high‑performance characteristics.

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Application Overview

Lignostone® laminates are widely used across electrical, transformer, switchboard and cryogenic applications. Grade‑specific formulations allow Lignostone® to perform reliably in oil‑filled transformers, air‑insulated switchboards and extreme cryogenic environments where both load‑bearing capability and insulation performance are critical.

What We Solve For

Traditional insulation materials often struggle to balance mechanical strength, thermal behaviour and sustainability. Lignostone® solves this by delivering high load‑bearing capacity, excellent electrical insulation and low thermal conductivity in a material derived from renewable, responsibly sourced wood.
TECHNICAL

Features & Functionality

High Mechanical Strength
High Mechanical Strength

Designed to withstand heavy compressive and bending loads, making it suitable for structural and clamping components.

Reliable Electrical Insulation
Reliable Electrical Insulation

Provides stable dielectric performance in air, oil‑immersed and cryogenic applications depending on grade selection.

Low Thermal Conductivity
Low Thermal Conductivity

Helps reduce heat transfer, supporting electrical safety and thermal management in demanding environments.

Grade‑Specific Performance
Grade‑Specific Performance

Available in variants optimised for switchboards, transformers, press rings and cryogenic service conditions.

Functionality & Options

  • Switchboard‑grade laminates for air‑insulated systems
  • Transformerwood® for oil‑filled transformer insulation components
  • Press rings with tangential laminations for radial strength
  • Cryogenic grades suitable down to –196 °C
  • Supplied as sheets, blocks or machined components
  • Custom machining, profiling and fabrication available

Key Technical Specifications

  • Densified laminated wood impregnated with phenolic resin
  • Density range: approx. 1.1 – 1.37 g/cm³
  • High compressive and flexural strength
  • Electrical strength up to approx. 70 kV / 25 mm
  • Continuous operating temperatures up to ~105 °C (higher during drying)
  • Cryogenic temperature range: –196 °C to +90 °C (cryogenic grade)
  • Low moisture absorption and good oil absorption (transformer grades)
EXPERIENCE

Our Projects Featuring Insulect Industrial Materials

Explore our project highlights to see where Insulect industrial materials are making an impact.
For tailored advice on whether this solution suits your network, please connect with our team here.

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Fortescue Aldoga, New 275kV Substation Switchgear
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Fortescue Future Industries 275 kV Substation Project

Where you'll find our industrial materials

You'll find Insulect-supplied and installed industrial materials across Australia and New Zealand.

ADVANTAGES

Why Choose Lignostone® Densified Wood

Lignostone® densified wood laminates provide a dependable, application‑specific insulation solution where mechanical strength, electrical performance and thermal behaviour must work together. With proven grades for switchboards, transformers and cryogenic service, Lignostone® delivers long‑term reliability, engineered consistency and sustainable material advantages in critical installations.

Purpose‑Built Material Grades
Lignostone® is available in application‑specific grades, ensuring optimal performance whether used in switchboards, transformers or cryogenic systems.
Natural Strength with Engineering Precision
Manufactured from sustainably sourced beech veneers and processed under strict controls, Lignostone® combines natural material benefits with predictable, engineered performance.
Proven Performance in Critical Applications
With long‑term use in transformer insulation, mechanical supports and electrical assemblies, Lignostone® is trusted where reliability and safety are essential.
IMPLEMENTATION

Services & Support

Insulect offers comprehensive services and support for the products we manufacture and specialise in, enhancing value for local utilities, major energy users, equipment manufacturers, and service operators.

LOCAL TECHNICAL TEAM

Our local technical team provides exceptional support and expertise, ensuring quick response times and personalised service to tackle any challenges that may arise during project execution.

  
ENGINEERING DESIGN

Our team utilises advanced technology and industry knowledge to develop innovative and efficient high voltage switchgear solutions, customised to fit the unique requirements of each project.

  
PROCUREMENT & LOGISTICS

We facilitate smooth procurement and logistics processes by sourcing from trusted, proven partners and coordinating timely deliveries, ensuring projects remain on schedule and within budget.

  
TESTING & COMMISSIONING
Professional testing and commissioning support ensures that every high-voltage switchgear system functions safely and reliably, adhering to all regulatory standards and client expectations.
  
TURNKEY PROJECT DELIVERY

We are able to oversee every phase from concept to completion, providing comprehensive solutions that simplify complex projects and ensure successful outcomes.

  
FACTORY VISITS
We facilitate client visits to our local manufacturing sites here in Australia, as well as overseas, for initial inspection as well as factory acceptance testing.
  
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We built for reliability, safety, and compliance — our products are designed to perform in the toughest environments. Talk to our team to ensure you're specifying the right product for your application.
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