BS ISO 6324:2024
Thermal insulation products. Flexible microporous insulation for industrial applications. Specification
- Standard No.
- BS ISO 6324:2024
- Release Date
- 2024
- Published By
- British Standards Institution (BSI) GB / BSI
- Latest
- BS ISO 6324:2024
- Introduction
Analysis of the core content of the standard
This standard applies to flexible microporous insulation materials (FMI) for industrial equipment, which achieve thermal insulation performance through a nano-scale porous composite structure (mixed inorganic powder, fiber and sunscreen). The product is delivered in the form of flexible coils or sheets and must meet the physical and chemical properties requirements specified in Chapter 4.
Key Performance Indicator Requirements
Performance Category Test Standard Allow Deviation Typical Value Range Dimension Tolerance ISO 29465/29466 Thickness≤±2%~15% According to Application Grade T1-T5 Thermal Conductivity λ ISO 8301/8302 3 Significant Figures 0.030W/(m·K)@500℃ Temperature resistance ST(+) ISO 18097 Linear change ≤2% 800~1000℃ classification
Technological evolution and innovation
Compared with the previous generation standard, the 2024 version has the following major updates:
- New flexibility test method (4.3.8), requiring a 300×300mm sample to be bent 90° without cracking in a 21.3mm diameter pipe
- Refine the thermal conductivity test temperature gradient (Table 2), and add a new high temperature test point of 500℃
- Introduce microbial resistance test (ISO 846), which must be verified by 5 fungal strains
Compliance Implementation Recommendations
Factory Production Control (FPC)
Establish a quality control system in accordance with the requirements of Appendix A, paying special attention to:
- Thermal conductivity test needs to be retested every 6 months (Table A.1)
- The maximum production batch shall not exceed 7 days of continuous output
- Thickness measurement must be carried out under a pressure of 250Pa
Marking Specifications
The product packaging must include: FMI-ISOXXXX code, nominal thickness value, production traceability code and fire rating. Example:
FMI-ISOXXXX-b300-l300-t10-λD0.030(500℃)-ST(+)800-CS(10/Y)100
Industrial Application Cases
In petrochemical pipeline insulation:
- ST(+)1000 grade material is selected to cope with high temperature steam
- ISO 12624 test ensures chloride ion content <25mg/kg to prevent stress corrosion of stainless steel
- Flexible properties allow fitting of special-shaped pipe fittings (test method 4.3.8)
BS ISO 6324:2024 Referenced Document
- ISO 12576-1 Thermal insulation - Insulating materials and products for buildings; Conformity control systems - Part 1: Factory-made products
- ISO 12624 Thermal insulating products for building equipment and industrial installations — Determination of trace quantities of water-soluble chloride, fluoride, silicate, sodium ions and pH
- ISO 13787 Thermal insulation products for building equipment and industrial installations - Determination of declared thermal conductivity
- ISO 16535 Thermal insulating products for building applications — Determination of long-term water absorption by immersion
- ISO 1663 Rigid cellular plastics — Determination of water vapour transmission properties
- ISO 18097 Thermal insulating products for building equipment and industrial installations — Determination of maximum service temperature
- ISO 23993 Thermal insulation products for building equipment and industrial installations - Determination of design thermal conductivity
- ISO 29465 Thermal insulating products for building applications — Determination of length and width
- ISO 29466 Thermal insulating products for building applications — Determination of thickness
- ISO 29469:2022 Thermal insulating products for building applications — Determination of compression behaviour
- ISO 29470 Thermal insulating products for building applications — Determination of the apparent density
- ISO 29767 Thermal insulating products for building applications — Determination of short-term water absorption by partial immersion
- ISO 8301 Thermal insulation — Determination of steady-state thermal resistance and related properties — Heat flow meter apparatus AMENDMENT 1
- ISO 8302 Thermal insulation; determination of steady-state thermal resistance and related properties; guarded hot plate apparatus
- ISO 846:2019 Plastics — Evaluation of the action of microorganisms
BS ISO 6324:2024 history
- 2024 BS ISO 6324:2024 Thermal insulation products. Flexible microporous insulation for industrial applications. Specification
