Aluminium 5083 round bars are widely used in industries that demand high strength, excellent corrosion resistance, and reliable performance in harsh environments. Known especially for its outstanding behavior in marine and industrial applications, Aluminium 5083 offers a strong combination of durability and workability. Understanding its sizes, standards, and tolerances helps engineers and buyers select the right material for precise applications.
What Is Aluminium 5083 Round Bar?
Aluminium 5083 is a non-heat-treatable aluminum-magnesium alloy with high magnesium content. This composition gives it excellent resistance to seawater, industrial chemicals, and atmospheric corrosion. When supplied in round bar form, it is commonly used for machining components, shafts, structural parts, and marine fittings.
Standard Sizes of Aluminium 5083 Round Bars
Aluminium 5083 round bars are available in a wide range of diameters and lengths to suit different fabrication and machining requirements.
Common Diameter Range
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6 mm to 300 mm
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Custom sizes available on request
Standard Lengths
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3 meters
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6 meters
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Cut-to-length as per customer specification
These flexible sizing options make Aluminium 5083 round bars suitable for both small-scale fabrication and heavy industrial use.
Applicable Standards
Aluminium 5083 round bars are manufactured and supplied according to international standards to ensure consistent quality and performance.
Common Standards
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ASTM B221 – Aluminum and Aluminum-Alloy Extruded Bars
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EN 573 / EN 755 – Chemical composition and mechanical properties
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ISO 6361 – Wrought aluminum and aluminum alloy bars
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DIN Standards – For European applications
Compliance with these standards ensures proper chemical composition, mechanical strength, and dimensional accuracy.
Tolerances of Aluminium 5083 Round Bars
Dimensional tolerances are critical for machining accuracy and proper fit in assemblies. Aluminium 5083 round bars are supplied with standard or precision tolerances depending on application requirements.
Typical Diameter Tolerances
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±0.25 mm for standard bars
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Tighter tolerances available for precision machining applications
Straightness and Ovality
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Maintained as per ASTM and EN specifications
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Ensures smooth machining and consistent performance
Many industries prefer sourcing from a reliable Aluminium 5083 round bar manufacturer to ensure strict adherence to size tolerances and international quality standards.
Key Properties Supporting Dimensional Stability
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High resistance to corrosion and oxidation
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Good strength-to-weight ratio
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Excellent weldability
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Stable mechanical performance at low temperatures
These properties help Aluminium 5083 round bars maintain dimensional accuracy even in demanding operating conditions.
Applications Based on Size and Tolerance Requirements
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Marine industry: Shafts, fittings, and structural components
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Automotive and transportation: Machined parts and supports
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Pressure vessels: Components requiring precise tolerances
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General engineering: CNC-machined parts and frameworks
Choosing the correct size and tolerance ensures reduced material waste and improved component performance.
Conclusion
Aluminium 5083 round bars offer excellent corrosion resistance, strength, and versatility across a wide range of industrial applications. With availability in multiple sizes, compliance with global standards, and controlled tolerances, they are a reliable choice for precision and heavy-duty use. Selecting the right dimensions and working with a trusted supplier or manufacturer ensures consistent quality and long-term performance.
