What is phlogopite silicone mica?

It is a high-temperature insulating material made from phlogopite mica bonded with a specialised silicone resin system. It offers exceptional heat resistance, fire performance, and electrical insulation.

What temperature can it withstand?

Phlogopite mica typically withstands 900–1000°C continuous and up to 1200°C short-term, depending on grade and application conditions.

Is it fire-resistant?

Yes. The material is non-combustible, does not sustain flame, and produces low smoke and low toxicity under high heat.

Is it suitable for electrical insulation?

Yes. It maintains high dielectric strength and insulation resistance even at elevated temperatures, making it suitable for busbar barriers, arc shields, and high-temperature electrical assemblies.

Phlogopite silicone mica is easy to machine on CNC routers, mills, and saws. It can be cut, drilled, slotted, and shaped into precision components.

What industries use silicone phlogopite mica?

Common users include switchboard builders, transformer manufacturers, furnace and foundry operators, automotive and EV, aerospace, defence, oil and gas, power generation, and industrial machinery OEMs.

How does phlogopite differ from muscovite mica?

Phlogopite offers superior high-temperature performance and better thermal shock resistance. Muscovite is stiffer but less capable at extreme heat.

Is phlogopite mica chemically resistant?

Yes. It has strong resistance to oils, greases, coolants, solvents, and most industrial chemicals, even at elevated temperatures.

Is it compliant with Australian standards?

The material meets relevant electrical, thermal, fire safety, and environmental compliance requirements, including RoHS, REACH, and applicable IEC insulation standards.

SILICONE MICA PHLOGOPITE

Silicone-bonded phlogopite mica is a premium high-temperature insulation material designed for environments where conventional composites fail.

Known for its outstanding thermal endurance, stability under direct flame, and reliable electrical insulation at elevated temperatures, phlogopite mica delivers dependable performance in demanding industrial, electrical, and furnace applications.

This material maintains structural integrity when exposed to open flame, molten metal splash, and rapid temperature fluctuations, making it a trusted choice across heavy industry, power generation, and high-temperature manufacturing.

SPECIFICATIONS

Product Form

Sheets, rods, tubes, machined components,

and custom profiles

Standard Colours

Golden Brown

Sheet Sizes

High-Temperature Industrial Range

1020 mm × 1220 mm
1020 mm × 2040 mm

Thickness Range

Commonly 0.2 mm – 50 mm (others on request)

Compliance

Asbestos-free
REACH compliant (EU 1907/2006) – contains no SVHC substances
RoHS 3 compliant (Directive 2011/65/EU & 2015/863)
Halogen-free – no intentionally added chlorine, bromine, fluorine, or halogenated binders
Complies with EU Waste Framework Directive for non-hazardous classification
Low smoke emission
Low toxicity under heat and flame exposure
Does not produce corrosive gases under fire conditions
Free from ozone-depleting substances (CFC/HCFC-free)
Complies with Safe Work Australia HCIS expectations (non-hazardous material profile)
Compliant with REACH Annex XVII restrictions for restricted substances
Manufactured with environmentally responsible binders and low-VOC materials
Meets modern sustainability expectations for industrial insulation materials
IEC 60695 – Fire hazard testing principles (non-flammable mica insulation)
IEC 60216 – Thermal endurance evaluation for insulating materials
IEC 60085 – Thermal class designations for electrical insulation systems
IEC 60505 – Electrical insulation system qualification
IEC 60893 reference (industrial rigid insulating materials – mica-based composites)
Meets industry performance expectations for high dielectric strength

MECHANICAL PROPERTIES

ELECTRICAL PROPERTIES

THERMAL PROPERTIES

Exceptional High-Temperature Resistance – reliable performance up to approx. 1000 °C in continuous service conditions.
Non-Combustible – will not burn, ignite, or support flame propagation.
Outstanding Fire Resistance – withstands direct flame, sparks, and molten metal splash without degradation.
High Dielectric Strength – maintains electrical insulation properties at elevated temperatures.
Excellent Thermal Shock Stability – resists rapid heating and cooling without cracking or de laminating.
Strong Mechanical Integrity – retains rigidity and structural performance under extreme heat.
Chemically Stable – highly resistant to oils, greases, solvents, and most industrial chemicals.
Low Smoke & Toxicity – safe for enclosed or critical environments where fire performance matters.
Dimensional Stability – low thermal expansion ensures consistent fitment in high-heat assemblies.
Superior Surface Integrity – smooth, low-porosity finish ideal for precision machining.
CNC Machinable – cuts, routs, drills, and shapes cleanly for complex component designs.
Moisture Resistant – low water absorption ensures consistent dielectric properties in service.
High Flexural Strength – strong resistance to bending stresses, even when hot.
Environmental Compliance – asbestos-free, RoHS compliant, REACH compliant.
Long Service Life – robust performance under continuous heat exposure reduces maintenance and replacement frequency.

Arc Furnace Systems – arc deflection panels, thermal isolation boards.
Heat Treatment Facilities – insulation for quenching stations, hearth boards, and high-temperature fixtures.
Smelting & Casting Lines – trough liners, splash shields, protective barriers in metal flow paths.
Induction Heating Coils – coil insulation, formers, and high-temperature support structures.
Foundry Tooling – patterns, mould supports, and heat-resistant templates.
Welding Equipment – torch insulation plates, thermal guards, spark containment panels.
Electrical Machine Construction – insulation for generators, motors, commutators, and slip-ring enclosures.
Power Distribution Systems – thermal isolation plates for LV/MV switch gear and breaker compartments.
High-Temperature Gaskets – rigid gasket plates for flanges, enclosures, and high-heat assemblies.
Thermal Barriers in Control Cabinets – compartment dividers and panel insulation.
Industrial Ovens & Drying Tunnels – side panels, deflectors, insulation plates.
Chemical Processing Plants – heat-resistant insulation in reactors, distillation units, and hot zones.
Glass & Ceramic Manufacturing – kiln furniture, insulation boards, and structural thermal components.
Refractory Support Components – rigid insulation layers under brick and refractory linings.
Battery Energy Storage Systems (BESS) – fire-resistant insulation between cells, modules, and sidewalls.
Diesel & Gas Engines – manifold shields, turbocharger thermal barriers, high-heat housings.
Rail Maintenance Facilities – heat-resistant jigs, fixtures, and protective barriers in workshop environments.
Mining & Mineral Processing – insulation boards around heat-generating equipment.
HVAC Fire Protection – fire-resistant insulation around ducts and high-temperature airflow systems.
Pump & Valve Assemblies – thermal barriers for pumps handling heated fluids.

Switchboard & Electrical Manufacturing
Electrical insulation for bus bars, arc shields, switch gear, and high-temperature components.
Transformer, Motor & Generator Industries
Thermal and electrical insulation for high-heat zones in rotating machines and power equipment.
Power Generation & Renewable Energy
Turbines, generators, battery systems, inverters, converters, and high-temperature control assemblies.
Furnace, Foundry & Metallurgical Processing
Induction furnaces, kilns, smelting lines, molten metal protection, and high-heat industrial equipment.
Industrial Heating & Process Plants
Boilers, burners, ovens, dryers, heat-treatment systems, and any equipment exposed to extreme heat.
Automotive, EV & Heavy Transport
Thermal shields, battery fire barriers, exhaust system insulation, and high-heat mechanical protection.
Aerospace & Defence
Fire-resistant panels, thermal protection for engine compartments, high-grade insulation for mission-critical systems.
Rail & Public Transport
Traction system insulation, converter protection, braking system heat barriers, and onboard fire-safe insulation.
Oil, Gas & Petrochemical
Fire-resistant insulation for refineries, gas processing plants, high-temperature piping and equipment.
Mining & Mineral Processing
Hot-zone machinery insulation, splash protection, and thermal barriers in extraction and processing operations.
Industrial Machinery & OEM Fabrication
Custom thermal and electrical insulation parts for equipment manufacturers and precision-engineered systems.
HVAC & Building Services
Fire-resistant insulation in ducts, enclosures, and high-temperature mechanical spaces.

Reliable in Extreme Heat – performs where standard composites fail, ensuring safe operation in high-temperature environments.
Fire-Safe Performance – non-combustible and low-toxicity behavior improves overall system fire safety.
Long Service Life – exceptional thermal stability reduces wear, degradation, and replacement frequency.
Consistent Electrical Insulation – maintains dielectric properties under load, heat, and thermal cycling.
High Mechanical Strength – retains structural integrity at elevated temperatures for dependable long-term performance.
Reduced Downtime – durable construction minimises failure rates in demanding industrial operations.
CNC Machinable – fabricates cleanly into precise, complex shapes for OEM, switchboard, and equipment manufacturers.
Dimensionally Stable – minimal thermal expansion ensures tight, predictable fitment in assemblies.
Chemical & Oil Resistant – ideal for harsh industrial, petrochemical, and high-contamination environments.
Safe Material Choice – asbestos-free, RoHS and REACH compliant, low smoke and low toxicity for modern standards.
Versatile Application Range – suitable for electrical, thermal, mechanical, and fire-protection roles across many industries.
Cost-Effective Over Life Cycle – durable performance reduces replacement, maintenance, and service interruptions.

Downloads

All supporting documents for this material are available for download, including the latest technical data sheet, safety data sheet, machining and processing guidance, compliance information, and relevant product brochures.

These controlled documents provide specifications, performance data, handling requirements, and application notes to assist with design, material selection, and fabrication.

Each file is maintained by MISCO Australia to ensure current, reliable information for switchboard, transformer, industrial, and defence grade applications.

Frequently asked questions

Discover the MISCO Australia Advantage

Experience the confidence of partnering with an Australian-owned manufacturer committed to quality, precision, and reliability. MISCO Australia combines hands-on expertise, advanced CNC machining, and decades of industry knowledge to deliver high-performance insulation materials and engineered components that meet the toughest electrical and mechanical demands.