Link points to Internet Archive / others. Not hosted by InfraLens. Details
IS 12400:2018 Part 1 is the Indian Standard (BIS) for thermal insulating materials - mineral wool - blanket type - specification. This standard specifies the requirements for mineral wool blankets, including rock wool and slag wool, used for thermal insulation purposes. It covers physical properties like density and thermal conductivity, dimensions, tolerances, and testing criteria for materials used in applications with service temperatures up to 750°C.
Specifies requirements for mineral wool blanket type thermal insulating materials used in buildings and industrial applications.
Standard Specification for Mineral Fiber Blanket Thermal Insulation for Commercial and Industrial Applications
Specifies requirements for mineral fiber blankets used for thermal insulation in commercial and industrial settings.
EN 13162:2012+A1:2015CEN (European Committee for Standardization), Europe
HighCurrent
Thermal insulation products for buildings - Factory made mineral wool (MW) products - Specification
Defines requirements for factory-made mineral wool products, including blankets, for thermal insulation of buildings.
ASTM C665-17ASTM International, USA
MediumCurrent
Standard Specification for Mineral-Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing
Covers mineral fiber blankets specifically for residential and light commercial building applications, a subset of IS 12400's scope.
AS/NZS 4859.1:2018Standards Australia/Standards New Zealand
LowCurrent
Thermal insulation materials for buildings - Part 1: General criteria and technical provisions
Provides a performance framework for all insulation materials, rather than being a specific product standard for mineral wool blankets.
Key Differences
≠IS 12400 classifies products into 6 density groups (G1-G6), making density a primary classifier. In contrast, EN 13162 uses a detailed designation code for performance levels (thermal resistance, etc.), and ASTM C553 uses 'Types' based on maximum use temperature and form.
≠Fire performance testing and classification methods differ significantly. IS 12400 requires 'Non-combustible' per IS 3144, EN 13162 uses the Euroclass system (e.g., A1, A2) per EN 13501-1, and ASTM C553 uses the Flame Spread/Smoke Developed indices from ASTM E84.
≠IS 12400 specifies maximum thermal conductivity values for each density group at a mean temperature of 50 °C. EN 13162 and ASTM C553 require manufacturers to declare thermal performance values, providing a framework for testing but not prescribing values for specific densities.
≠EN 13162 requires the declaration of water vapour transmission resistance (μ-value), a key parameter for hygrothermal analysis. IS 12400 focuses on water absorption percentage by volume and does not mandate reporting of water vapour resistance.
Key Similarities
≈All standards define mineral wool as being produced from molten rock, slag, or glass, and cover the blanket form of the product.
≈Thermal conductivity is a fundamental performance property in all standards, serving as the primary measure of insulation effectiveness, although test temperatures and reporting methods vary.
≈All standards include requirements and tolerances for the physical dimensions of the blanket, including length, width, and thickness.
≈Each standard specifies requirements to ensure the material is not corrosive to metals (e.g., steel), typically involving a comparative test against a neutral material like sterile cotton.
Parameter Comparison
Parameter
IS Value
International
Source
Primary Classification Method
By Density Groups (e.g., G4: 97-112 kg/m³)
By Types based on max use temperature and form (e.g., Type III: 850°F / 454°C)
ASTM C553-13(2019)
Fire Performance Test
Non-combustibility test as per IS 3144
Reaction to fire classification as per EN 13501-1 (Euroclass System)
EN 13162:2012+A1:2015
Max. Service Temperature (Rock/Slag Wool)
Up to 750 °C
Up to 1200 °F (649 °C) for Type V
ASTM C553-13(2019)
Thermal Conductivity (approx. 100 kg/m³ density)
≤ 0.045 W/(m·K) at 50 °C mean temp (Group G4)
Typically declared by manufacturer; e.g., a declared λD of 0.035 W/(m·K) is common.
EN 13162:2012+A1:2015
Thickness Tolerance (for thickness ≤ 75 mm)
-5 mm / +10 mm
Level T2: -5% or -5mm / +15% or +15mm (whichever is greater)
EN 13162:2012+A1:2015
Water Absorption (Short Term)
Max 5% by volume (as per IS 3677)
Declared level WS: ≤ 1.0 kg/m²
EN 13162:2012+A1:2015
Corrosiveness Test
Shall not cause greater corrosion than sterile cotton (as per IS 12400 Annex B)
Shall not be corrosive to steel (as per test method in ASTM C665)
ASTM C553-13(2019)
⚠ Verify details from original standards before use
Key Values7
Quick Reference Values
Standard length of pipe section1000 mm
Length tolerance± 5 mm
Thickness tolerance± 3 mm or ±10%, whichever is greater
Max thermal conductivity (density ≥ 100 kg/m³ at 50°C mean temp)0.040 W/m.K
Max thermal conductivity (density ≥ 100 kg/m³ at 100°C mean temp)0.048 W/m.K
Maximum service temperature (density 100 to <140 kg/m³)650 °C
Maximum service temperature (density ≥ 140 kg/m³)750 °C
Tables & Referenced Sections
Key Tables
Table 1 - Dimensions and Tolerances for Mineral Wool Pipe Sections
Table 2 - Requirements for Mineral Wool Pipe Sections