METHERM CS 650 — Microporous Calcium Silicate, Max 650°C
METHERM CS 650 microporous calcium silicate insulation board, max service 650°C. Lower thermal conductivity than standard calcium silicate. Distributed by ThermalEast for global buyers — direct quotes, technical support, consolidated shipping.
Buyer Brief
METHERM CS 650 is a microporous xonotlite calcium silicate board rated to 650°C, delivering thermal conductivity of 0.07–0.12 W/(m·K) at 200°C — below standard calcium silicate — enabling thinner insulation sections for equivalent thermal resistance. Class A non-combustible, asbestos-free, dimensionally stable to rated temperature. Standard sizes 600 × 600 mm and 1000 × 500 mm in 25–100 mm thicknesses; machinable with standard tools.
Spec Snapshot
| Property | Unit | Value |
|---|---|---|
| Maximum service temperature | °C | 650 |
| Primary mineral phase | — | Xonotlite (microporous) |
| Typical density range † | kg/m³ | 150–300 |
| Thermal conductivity at 200°C † | W/(m·K) | 0.07–0.12 |
| Thermal conductivity at 400°C † | W/(m·K) | 0.10–0.18 |
| Fire classification | — | Class A (non-combustible) |
| Combustibility | — | Non-combustible |
| Asbestos content | — | None |
| CFC / HCFC content | — | None |
| Dimensional stability | — | Stable to 650°C — no settling or shrinkage |
| Machineable | — | Yes — saw, drill, mill with standard tools |
† Values are typical for the METHERM CS 650 grade class. Thermal conductivity varies with density sub-grade and mean temperature. Request CoA for certified test data.
Use Cases
Steam pipe lagging. At 0.07–0.12 W/(m·K), CS 650 reduces required insulation thickness by ~30% versus standard calcium silicate on DN200 headers at 200°C.
Petrochemical hot oil and distillation lines. Retains structural integrity after steam-purge and water-wash cycles at 280–380°C, where mineral wool suffers permanent thermal conductivity degradation.
Industrial oven door insulation. Rigid format eliminates the progressive compression and settling that blanket mineral wool exhibits under repeated open/close cycling at up to 500°C.
Valve vault and flange box insulation. Machinable rigid boards can be removed and reinstalled during annual valve inspection without replacing the bulk insulation run — moisture-tolerant for periodically flooded vaults.
Why ThermalEast
ThermalEast supplies METHERM CS 650 at calcium silicate board economics through direct distribution, with CoA documentation and LCL consolidation for mixed-product orders.