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IS 734:1975 is the Indian Standard (BIS) for wrought aluminium and aluminium alloy drawn tube for general engineering purposes - specification. This standard specifies the requirements for wrought aluminium and aluminium alloy drawn tubes used for general engineering purposes. It establishes criteria for chemical composition, mechanical properties, and dimensional tolerances across various alloy grades and tempers.
Specifies requirements for wrought aluminium and aluminium alloy drawn tubes intended for general engineering purposes.
Overview
Status
Current
Usage level
Specialized
Domain
Materials Science — Aluminium and Non-Ferrous Metals
! Drawn tubes provide tighter dimensional tolerances, thinner walls, and better surface finishes compared to extruded tubes.
! Engineers must clearly specify the temper designation (e.g., 'O' for annealed, 'WP' for fully heat-treated) during procurement as it dictates the final mechanical strength.
! For welding applications, select appropriate alloy grades (like 5000 or 6000 series) as specified in the standard.
EN 754-1:2008 / EN 754-2:2013 / EN 754-7:2008CEN (European Committee for Standardization), Europe
HighCurrent
Aluminium and aluminium alloys - Cold drawn rod/bar and tube (Multi-part standard covering technical conditions, mechanical properties, and tolerances)
Specifies technical conditions, properties, and tolerances for cold drawn aluminium alloy seamless tubes.
ASTM B210/B210M-19ASTM International, USA
HighCurrent
Standard Specification for Aluminum and Aluminum-Alloy Drawn Seamless Tubes
Covers drawn seamless tubes in various alloys for general purpose and pressure applications.
ASTM B483/B483M-18ASTM International, USA
HighCurrent
Standard Specification for Aluminum and Aluminum-Alloy Drawn Tube and Pipe for General Purpose Applications
Covers drawn tube in specific alloys intended for general purpose, non-pressure applications.
BS H9:2010BSI (British Standards Institution), UK
HighCurrent
Aluminium and aluminium alloys. Cold drawn rod/bar and tube. Mechanical properties
Specifies the mechanical properties of cold drawn tubes; this is the UK's adoption of EN 754-2.
Key Differences
≠IS 734:1975 has been withdrawn by the Bureau of Indian Standards and is no longer maintained. Equivalent international standards like EN 754 and ASTM B210 are current and regularly updated.
≠IS 734 uses an older 5-digit numerical alloy designation (e.g., 65032, 24534), whereas modern standards use the globally recognized 4-digit International Alloy Designation System (IADS) (e.g., 6082, 6063).
≠Temper designations in IS 734 are basic (e.g., 'W' for solution treated, 'WP' for solution treated and aged). International standards use a more descriptive system (e.g., T4, T6, T651) that precisely defines the thermo-mechanical treatment.
≠The range of alloys and tempers in IS 734 is limited compared to the extensive options available in current ASTM and EN standards, which cover more specialized and higher-performance materials.
Key Similarities
≈All standards serve the primary purpose of defining the requirements for wrought aluminium alloy tubes intended for general engineering applications, ensuring product quality and consistency.
≈The fundamental properties specified are consistent across the standards, including mandatory limits for chemical composition, mechanical properties (tensile strength, proof stress, elongation), and dimensional tolerances.
≈The scope of all standards specifically covers tubes manufactured by a cold drawing process, which imparts improved dimensional control and surface finish compared to other manufacturing methods like extrusion.
≈The core alloy families covered are similar, focusing on common heat-treatable (6xxx series) and non-heat-treatable (1xxx, 3xxx series) alloys. For example, IS alloy 65032 is a direct equivalent to EN AW-6082 and AA6082.
What is the primary difference between extruded and drawn aluminium tubes?+
Drawn tubes are pulled through a die after initial extrusion, which gives them tighter dimensional tolerances, improved surface finish, and increased strength due to cold working.
How is the chemical composition verified?+
It is verified using spectrometric analysis or chemical methods detailed in IS 504.
Does this standard cover tubes for structural columns?+
While it covers general engineering tubes, heavy structural aluminium design should typically refer to IS 8147 along with specific structural codes.