ASTM B221-Extruded Aluminum Alloy Tubes for General Purpose Applications pdf.

ASTM B221 is a standard specification for aluminum and aluminum-alloy extruded bars, rods, wire, profiles, and tubes. This specification is critical for defining the requirements for these aluminum products in various applications. Here are the key points:

1. Scope: ASTM B221 covers the specifications for aluminum and aluminum-alloy extruded products. These include bars, rods, wires, profiles, and tubes, in both aluminum and aluminum alloys in various tempers as shown in Table 2 of the standard.
2. Alloy and Temper Designations: The alloy and temper designations follow the ANSI H35.1 system. The equivalent Unified Numbering System (UNS) designations are also provided, which helps in standardizing the identification across different systems (e.g., A91100 for Aluminum 1100).
3. Applications: The products covered by ASTM B221 are used for general purposes. Specific applications like pressure-carrying uses might need additional specifications, such as ASTM B210/B210M for drawn seamless tubes or ASTM B241/B241M for seamless pipes and tubes.
4. Metric Companion: A metric equivalent of the standard is available as ASTM B221M, ensuring compatibility in regions that use the metric system.
5. Revision and Status: The most recent version of ASTM B221 was published in 2021, and it is currently active.

For more detailed information and to purchase the standard, you can visit the ASTM or Document Center websites​ (Document Center)​​ (ANSI Webstore)​​ (BSB Edge)​.

The scope of ASTM B221, the “Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes,” includes several important aspects:

1. Coverage: This specification applies to aluminum and aluminum-alloy extruded bars, rods, wires, profiles, and tubes. It includes various aluminum alloys and tempers as listed in the specification tables.
2. Alloy and Temper Designations: The alloy and temper designations are in accordance with ANSI H35.1. The equivalent Unified Numbering System (UNS) designations are included, such as A91100 for Aluminum 1100.
3. References to Other Specifications: The specification refers to other ASTM standards for related products:
   • For rolled or cold-finished bar and rod, see ASTM B211/B211M.
   • For drawn seamless tubes used in pressure applications, see ASTM B210/B210M.
   • For structural pipe and tube, see ASTM B429/B429M.
   • For seamless pipe and tube used in pressure applications, see ASTM B241/B241M.
4. General Purpose Applications: The products specified are intended for general-purpose applications. Specific requirements for pressure applications and other specialized uses may require additional specifications.
5. Metric Companion: There is a metric version of this specification, ASTM B221M, which provides metric equivalents for the standard.
6. Inclusion of New Alloys: The specification includes criteria for the acceptance of new aluminum and aluminum alloys, detailed in Annex A2.
7. International Standards Compliance: The standard was developed following the internationally recognized principles on standardization established by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

For further details, you can consult the ASTM B221 standard directly on the ASTM International website or through other authorized distributors​ (Document Center)​​ (ANSI Webstore)​​ (BSB Edge)​.

ASTM B221 is the standard specification for aluminum and aluminum-alloy extruded bars, rods, wire, profiles, and tubes. Below are the detailed specifications:

General Specifications:

1. Scope:
   • Covers aluminum and aluminum-alloy extruded bars, rods, wire, profiles, and tubes.
   • Includes various aluminum alloys and tempers listed in the specification tables.
2. Alloy and Temper Designations:
   • Alloy and temper designations are in accordance with ANSI H35.1.
   • The Unified Numbering System (UNS) designations are included (e.g., A91100 for Aluminum 1100).
3. Related Specifications:
   • For rolled or cold-finished bar and rod: ASTM B211/B211M.
   • For drawn seamless tubes used in pressure applications: ASTM B210/B210M.
   • For structural pipe and tube: ASTM B429/B429M.
   • For seamless pipe and tube used in pressure applications: ASTM B241/B241M.
4. General Purpose:
   • Intended for general-purpose applications, not specifically for pressure applications unless additional specifications are followed.
5. Metric Companion:
   • A metric version of this specification is available as ASTM B221M.
6. Acceptance Criteria for New Alloys:
   • Detailed in Annex A2 of the specification.
7. International Standards Compliance:
   • Developed in accordance with principles established by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Specific Technical Details:

1. Chemical Composition:
   • The standard specifies the chemical composition for various aluminum alloys, including maximum allowable limits for elements such as silicon, iron, copper, manganese, magnesium, chromium, zinc, titanium, and others depending on the specific alloy.
2. Mechanical Properties:
   • Specifies the mechanical properties required for different alloys and tempers, including tensile strength, yield strength, and elongation.
3. Dimensions and Tolerances:
   • Defines the dimensional tolerances for extruded products, including tolerances on diameter, thickness, and length.
4. Manufacturing Process:
   • Describes the acceptable manufacturing processes and treatments for producing the extruded products to meet the specified properties and dimensions.
5. Testing and Inspection:
   • Specifies the testing and inspection methods to verify the mechanical properties, dimensions, and surface quality of the extruded products.
   • Includes requirements for tensile testing, chemical analysis, and dimensional inspection.

For the full details, it is recommended to consult the complete ASTM B221 document available through ASTM International and other authorized distributors such as Document Center or ANSI Webstore​ (Document Center)​​ (ANSI Webstore)​​ (BSB Edge)​.

The chemical composition limits for aluminum and aluminum-alloy extruded products specified in ASTM B221 can be summarized from the standard’s tables. These tables list the maximum and sometimes minimum allowable percentages of various elements in the alloy. Here is an outline of typical elements and their limits for common aluminum alloys included in ASTM B221:

Common Elements and Their Limits:

• Silicon (Si): Limits typically range from 0.10% to 1.5% depending on the alloy.
• Iron (Fe): Limits usually range from 0.20% to 0.50%.
• Copper (Cu): Limits vary from 0.05% to 0.40%.
• Manganese (Mn): Limits range from 0.01% to 1.0%.
• Magnesium (Mg): Limits vary widely from 0.01% to 5.5%.
• Chromium (Cr): Limits typically range from 0.01% to 0.35%.
• Zinc (Zn): Limits range from 0.01% to 5.1%.
• Titanium (Ti): Limits typically range from 0.01% to 0.20%.
• Other Elements: Limits for elements such as vanadium, zirconium, and others are usually specified to ensure their content remains low, often below 0.10%.

Example Compositions for Specific Alloys:

• 1100 (Aluminum 99.0%):
  • Silicon + Iron: 0.95% max
  • Copper: 0.05% to 0.20%
  • Zinc: 0.10% max
  • Other elements: Each 0.05% max, Total 0.15% max
• 6061:
  • Silicon: 0.40% to 0.80%
  • Iron: 0.70% max
  • Copper: 0.15% to 0.40%
  • Manganese: 0.15% max
  • Magnesium: 0.8% to 1.2%
  • Chromium: 0.04% to 0.35%
  • Zinc: 0.25% max
  • Titanium: 0.15% max
  • Other elements: Each 0.05% max, Total 0.15% max
• 6063:
  • Silicon: 0.20% to 0.60%
  • Iron: 0.35% max
  • Copper: 0.10% max
  • Manganese: 0.10% max
  • Magnesium: 0.45% to 0.90%
  • Chromium: 0.10% max
  • Zinc: 0.10% max
  • Titanium: 0.10% max
  • Other elements: Each 0.05% max, Total 0.15% max

Sources for Detailed Information:

For complete and detailed chemical composition limits, you should refer to the actual ASTM B221 document. You can access the full standard from:

• ASTM International
• Authorized distributors such as Document Center or ANSI Webstore.

These sources will provide the detailed tables and exact limits for all specified alloys.