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HT/ArmaFlex Industrial

Industrial grade FEF insulation material designed for applications with elevated temperatures in oil and gas industry

Technical information HT/ArmaFlex Industrial
Product_pdpimage_800x800_HT_ArmaFlex_Industrial_Roll

Material type

  • Factory-made flexible elastomeric foam based on et

Special features

  • HT/ArmaFlex Industrial is resistant to elevated operating temperatures.
  • The product is suitable for use in multi-layer applications including ArmaSound Industrial Systems.
PropertyValue / AssessmentStandard / Test method
Temperature range
Service temperature1
Min. °CMin. °FMax. °CMax. °F
-50-58125257
EN 14706, EN 14707, EN 14304
Thermal conductivity
Declared thermal conductivity
Θm-50 °C [-58 °F]0 °C [+32 °F]+50 °C [+122 °F]+100 °C [+212 °F]+125 °C [+257 °F]
λd ≤ [W/(m·K)] 0.0390.0410.0470.0570.063
k ≤ [Btu-in/(h-ft²-°F)]0.2710.2840.3250.3930.438
FormulaEquation of declared thermal conductivity as a function of temperature:
--λd (θm) = 0.04028 + 1.25 x 10⁻⁴ × θm + 8 × 10⁻⁷ × (θm - 30)² W/(m·K),
--where θm is mean temperature in ºC.
EN ISO 13787, EN 12667, EN ISO 8497
Fire Performance and Approvals
Surface spread of flameClass 1 (Approved by Lloyds Register)BS 476 Part 7
Reaction to fireD-s3,d0 / D(L)-s3,d0EN 13501-1, EN 13823, EN ISO 11925-2
Surface burning characteristicsClass A, <25 Flame Spread IndexASTM E84
Surface flammability2,3IMO Part 5IMO 2010 FTP Code, Part 5
Fire performance
Practical fire behaviourSelf-extinguishing, does not drip, does not spread flames.
Resistance to water vapour
Water vapour diffusion resistance factor4μ ≥ 3,000 (sheets)EN 12086, EN 134695
Water vapour permeability≤ 6.51 x 10⁻¹¹ g/(m·s·Pa) (≤0.045 Perm-inch)EN 12086, EN 134695
Resistance to water
Water absorption2≤ 0.1% by volume (total submersion for 2 hours)ASTM C209
Water absorption by vacuum≤ 4% by mass (total submersion for 2 x 180 seconds, vacuum pressure 17.2 kPa or 2.5 psi)ASTM D1056
Corrosion mitigation
Leachable (water-soluble) chlorides≤ 30 ppm (mg/kg or µg/g)EN 13468, ASTM C8716
pH-value27 to 9ISO 10523
Stress corrosion cracking2,7No cracks under magnifying glass on test coupons after evening, cleaning and rebending.ASTM C692
Physical attributes
DensitySheets: 70 to 85 kg/m³ (4.4 to 5.3 lb/ft³)
Tubes: 60 to 75 kg/m³ (3.7 to 4.7 lb/ft³)		ISO 845, ASTM D1622
Dimensions and tolerancesAccording to EN 14304, for detailed values, please refer to product range tables.EN 822, EN 823, EN 13467
Mechanical properties
Tear strength≥0.4 kNm (≥2.3 lbf/in)ISO 34-18
Compression deflection
Compression deflection 25%≥ 15kPa (≥ 2.2 psi) at 25% deflectionISO 6916-19
Acoustic performance
System acoustic insertion lossWhen used as part of a system: HT/ArmaFlex Industrial complies to ISO 15665 Classes A to C and Shell DEP 31.46.00.31-Gen Class D. Minimum acoustic service temperature (interface temperature to pipework or underlying thermal insulation layers) is -40 °C (-40 °F).ISO 3741, ISO 1566510
Weather and UV resistance
Weather resistanceIn all industrial applications, the outer layer of the material must be protected with an adequate covering like Arma-Chek R, metal jacketing or preformed UV-cured Glass-Reinforced Plastic (GRP) cladding. For further information, please contact Technical Services.
Health and environment
Health aspectsNeutral, SDS available on request.
Other technical features
Adhesion and sealing11,12ArmaFlex HT625 adhesive should be used for reliable adhesion of joints and seams. HT/ArmaFlex tape can be used for application.
Application conditions13,14Application temperature should be maintained at +5°C to +35 °C (+41°F to +95°F) and at a maximum relative humidity of 80%.
Closed-cell content≥ 90% (declared on the basis of the water absorption test.)
Shelf life15Maximum of 3 years.
StorageMaterial shall be stored indoors, in clean and dry conditions, away from direct sunlight.

1For use in temperatures beyond the published value, please contact Technical Services.

2Based on single test results. Can be used for information / reference only.

3Meets the criteria of floor coverings and primary deck coverings.

4For further information regarding water vapour transmission resistance, please contact Technical Services.

5Equivalent method to ASTM E96.

6Specimen prepared according to EN 13486: neither cut, ground nor blended. Test temperature +100°C, leaching time 0.5 hours as specified in the standard for product maximum service temperature.

7The coupons from type 304 stainless steel, 1.5 mm thick. 28 days drip test using deionized or distilled water at around +100°C.

8Minimum value in Machine Direction (MD) and in Cross Direction (CD). Method B, procedure (b), angle test piece with a nick.

9Equivalent method to ASTM D1056.

10Equivalent method to ASTM E1222.

11During storage of the product, blooming on the surfaces may occur. This blooming does not affect the technical properties of the material, but can affect the adhesion properties. Therefore, the surface needs to be cleaned (wiped off) before adhesives can be applied.

12For further information, please contact our Customer Service.

13For environmental conditions outside the given range, please contact Technical Services.

14Application temperature (temperature of installation) refers to the ambient temperature during application and the surface temperature of the substrate to which the product is installed.

15Shelf life (maximum storage time) is limited to ensure that only currently manufactured products are installed on projects. This limitation is restricted solely to storage of the product and does not affect the lifetime of product after it has been installed.