ASTM B241 vs EN 755: Aluminum Round Tube Standards Compared

Aluminum round tubes are widely used across global industries, from aerospace to architecture. Two of the most recognized standards that govern their production and specifications are the ASTM B241 (USA) and EN 755 (Europe). Understanding the differences between these standards is essential for choosing the right product for your project or market.

What Is ASTM B241?

ASTM B241 is an American standard covering seamless and welded aluminum and aluminum-alloy pipe and tube for structural and pressure applications. It specifies allowable alloys, mechanical properties, dimensions, and testing methods.

• Origin: USA (ASTM International)
• Common Alloys: 6061-T6, 6063-T6, 5086, 2024
• Applications: Oil & gas, automotive, military, pressure piping
• Testing: Hydrostatic test, tensile test, flattening (for welded)

What Is EN 755?

EN 755 is a European standard that defines the requirements for aluminum and aluminum alloy extruded rod/bar, tube, and profiles. It is more detailed in terms of dimensional tolerances and mechanical properties by alloy and temper.

• Origin: Europe (CEN – European Committee for Standardization)
• Common Alloys: 6060-T66, 6082-T6, 1050A, 7075-T6
• Applications: Building structures, rail, marine, general industry
• Parts: EN 755-1 to 9 cover technical conditions, tolerances, and properties

Key Differences Between ASTM B241 and EN 755

Applications by Standard

ASTM B241 Aluminum Tubes:

• High-pressure piping systems
• Aircraft hydraulic lines
• Structural applications in North America

EN 755 Aluminum Tubes:

• Rail transit systems in Europe
• Solar panel frames and structures
• Lightweight extrusions for marine use

How to Choose Between ASTM and EN Tubes

When selecting aluminum round tubes for export or engineering projects, always consider:

• Destination market requirements (e.g., CE marking for Europe)
• Intended use — structural, decorative, or pressure-bearing
• Certifications — material test reports, mechanical compliance
• Supply chain — local availability of standard-compliant material

Your Reliable Supplier for ASTM and EN Aluminum Tubes

We offer a wide selection of ASTM B241 and EN 755 aluminum round tubes, including 6061-T6, 6082-T6, and custom lengths or tolerances. Whether you're building to American or European standards, we can supply the exact materials you need, with full certification and export packaging.

Contact us today to request a datasheet or quotation for your specific tube standard requirements.

Author: frank

Chalco Aluminium is specialized in producing and marketing aluminium bar.Our customer service representatives are qualified,knowledgeable aluminum bars experts, Thire industry expertise and professionalism will save you time and money and ensure that you have the best aluminium bars and rods.