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IS 4457:2007 is the Indian Standard (BIS) for ceramic unglazed vitreous acid-resisting tile. This standard specifies the dimensions, physical, and chemical requirements for ceramic unglazed vitreous acid-resisting tiles used for flooring and wall lining in areas subject to corrosive acid attacks.
Ceramic unglazed vitreous acid-resisting tile
Overview
Status
Current
Usage level
Specialized
Domain
Architectural — Flooring, Wall Finishing and Roofing
! These tiles are highly resistant to most acids but are NOT resistant to hydrofluoric acid (HF) and its derivatives.
! The overall acid resistance of a floor or wall heavily depends on the bedding and jointing mortars used; ensure they are also acid-resistant (e.g., using resin or silicate based cements as per IS 4832).
ISO 13006:2018International Organization for Standardization (ISO), Global
HighCurrent
Ceramic tiles — Definitions, classification, characteristics and marking
Covers all ceramic tiles; Group BIa (water absorption ≤ 0.5%) directly corresponds to the IS 4457 product type.
ASTM C279-18American Society for Testing and Materials (ASTM), USA
HighCurrent
Standard Specification for Chemical-Resistant Masonry Units
Specifies requirements for bricks and tiles intended for use in chemically corrosive environments.
EN 14411:2016European Committee for Standardization (CEN), Europe
HighCurrent
Ceramic tiles - Definitions, classification, characteristics, assessment and verification of constancy of performance and marking
The European adoption of ISO 13006, where Group BIa specifications are technically identical.
Key Differences
≠IS 4457 is a single-product standard, whereas ISO 13006/EN 14411 provides a comprehensive classification system for all tile types, with acid-resisting tiles being one category (Group BIa).
≠The method for evaluating chemical resistance differs. IS 4457 uses a 'not affected' visual criterion and a max 1% mass loss, while ISO 10545-13 (referenced by ISO 13006) provides a detailed classification system (e.g., ULA, UHA) based on specific chemical concentrations.
≠While both IS and ISO/EN standards specify a water absorption of ≤ 0.5%, the comparable US standard, ASTM C279, is less stringent for its highest grade (Type I), allowing up to 1.0% water absorption.
≠IS 4457 specifies a single minimum breaking strength (≥1100 N for thickness ≥10mm), while ISO 13006 provides a value (≥1300 N) that applies to tiles with a minimum thickness of ≥7.5 mm, making the ISO requirement generally stricter.
Key Similarities
≈The fundamental requirement for a highly vitrified, dense body is common across all standards, reflected in the emphasis on low water absorption as a primary performance indicator.
≈The specified minimum Modulus of Rupture (flexural strength) is nearly identical: ≥ 35 MPa in IS 4457, ≥ 35 MPa in ISO 13006 (Group BIa), and ≥ 34.5 MPa in ASTM C279.
≈Both IS 4457 and ISO 13006 (for Group BIa unglazed tiles) specify a maximum abraded volume of 175 mm³ in the deep abrasion resistance test, indicating a shared benchmark for high mechanical wear resistance.
≈The core application focus is the same: providing a durable, non-porous surface for floors, tanks, and drains in industrial settings exposed to acids and other chemicals.
Parameter Comparison
Parameter
IS Value
International
Source
Water Absorption
≤ 0.5%
≤ 0.5%
ISO 13006:2018 (Group BIa)
Modulus of Rupture (MOR)
≥ 35 N/mm² (MPa)
≥ 35 N/mm² (MPa)
ISO 13006:2018 (Group BIa)
Modulus of Rupture (MOR)
≥ 35 N/mm² (MPa)
≥ 34.5 MPa (5000 psi)
ASTM C279-18 (Type I)
Breaking Strength
≥ 1100 N (for thickness ≥ 10 mm)
≥ 1300 N (for thickness ≥ 7.5 mm)
ISO 13006:2018 (Group BIa)
Deep Abrasion Resistance (Unglazed)
Volume of abraded material ≤ 175 mm³
Volume of abraded material ≤ 175 mm³ (Highest class)
ISO 13006:2018 (Test: ISO 10545-6)
Chemical Resistance (Acids)
Not affected visually; Mass loss ≤ 1.0%
Classified based on effect (e.g., UHA for resistance to high conc. acids)
ISO 13006:2018 (Test: ISO 10545-13)
⚠ Verify details from original standards before use