Similar International Standards
ASTM B221-21ASTM International, USA
HighCurrent
Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes
Specifies requirements for extruded aluminium profiles, including material composition, mechanical properties, and dimensional tolerances.
EN 755-2:2016CEN - European Committee for Standardization, Europe
HighCurrent
Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 2: Mechanical properties
Defines the mandatory mechanical properties (tensile strength, yield, elongation) for extruded aluminium alloy profiles.
EN 755-9:2016CEN - European Committee for Standardization, Europe
MediumCurrent
Aluminium and aluminium alloys - Extruded rod/bar, tube and profiles - Part 9: Profiles, tolerances on dimensions and form
Focuses specifically on dimensional and form tolerances for extruded profiles, a key section within IS 6449.
ISO 6362-2:2014ISO - International Organization for Standardization
HighCurrent
Wrought aluminium and aluminium alloys — Extruded rods/bars, tubes and profiles — Part 2: Mechanical properties
Specifies the mechanical properties for various tempers of extruded aluminium alloy profiles globally.
Key Differences
≠IS 6449 is highly specific, providing a fixed catalogue of dimensions, sizes, and sectional properties for marine bulb angles, whereas standards like ASTM B221 and the EN 755 series provide general rules for producing a vast range of custom profiles.
≠The Indian standard uses the 'WP' temper designation (Solution treated and artificially aged), while international standards use the alphanumeric 'T' temper system, such as 'T6'. Although 'WP' is functionally equivalent to 'T6', the nomenclature differs.
≠IS 6449 specifies the Indian alloy '64430 (HE30)', whereas international standards refer to their own alloy designation systems, such as 'EN AW-6082' (European) or '6061' (American), even when chemical compositions are nearly identical.
≠International standards like EN 755-9 offer different classes of tolerances (e.g., normal and special/precision), allowing designers to specify tighter controls if needed. IS 6449 provides a single set of prescribed tolerances.
Key Similarities
≈The chemical composition of the specified alloy in IS 6449 (64430 / HE30) is nearly identical to the internationally recognized EN AW-6082 alloy, making them technically interchangeable for many marine and structural applications.
≈All standards specify heat-treatable Aluminium-Magnesium-Silicon (Al-Mg-Si) alloys of the 6000 series, which are known for their good strength, corrosion resistance, and weldability, making them suitable for marine environments.
≈The manufacturing method stipulated or implied by all standards is hot extrusion, a process that ensures a consistent cross-section and uniform metallurgical properties along the length of the profile.
≈The core mechanical property requirements, including minimum ultimate tensile strength, 0.2% proof stress (yield strength), and percentage elongation, are very closely aligned between IS 6449 and its international counterparts for equivalent tempers.
≈All standards mandate a set of quality control checks, including chemical analysis of the material and mechanical testing of samples from the finished product to ensure compliance with the specified properties.