Astm A279 Pdf ((free)) May 2026

ASTM A279, formerly used for total immersion corrosion testing of stainless steels, was withdrawn in 1945 and replaced by ASTM G31. While sometimes mistakenly listed in modern catalogs, active, relevant standards for stainless steel testing include ASTM G31 for immersion and ASTM A269 or A479 for materials. For more information, visit All-Standards. ASTM A279 Withdrawn - All-Standards

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ASTM A279 is a standard specification for "Standard Specification for Quenched and Tempered Alloy Structural Steel Plates". Here's a brief review:

Overview

The ASTM A279 standard covers quenched and tempered alloy steel plates used in various applications, such as construction, bridges, buildings, and other structures. The standard was withdrawn in 2010 and replaced by ASTM A514/A514M.

Key Features

The ASTM A279 standard includes:

1. Materials: The specification covers quenched and tempered alloy steel plates made from various grades, such as A, B, C, D, E, and F.
2. Thickness and Size: Plates are available in various thicknesses (up to 6 inches) and sizes (up to 120 inches in width and 480 inches in length).
3. Mechanical Properties: The standard outlines requirements for mechanical properties, including tensile strength, yield strength, elongation, and notch toughness.
4. Heat Treatment: Plates must be quenched and tempered to achieve the required mechanical properties.

Content of the PDF

The ASTM A279 PDF likely includes:

1. Introduction: A brief overview of the standard and its application.
2. Referenced Documents: A list of other ASTM standards referenced in the specification.
3. Materials and Manufacture: Requirements for the materials, manufacture, and testing of the plates.
4. Chemical Composition: Requirements for the chemical composition of the steel.
5. Mechanical Properties: Requirements for the mechanical properties of the plates.
6. Testing and Inspection: Requirements for testing and inspecting the plates.
7. Certification and Marking: Requirements for certification and marking of the plates.

Review

If you're looking to access the ASTM A279 PDF, here's a brief review:

• The standard provides detailed requirements for quenched and tempered alloy steel plates.
• The specification covers various grades, thicknesses, and sizes of plates.
• The standard outlines requirements for mechanical properties, heat treatment, and testing.

However, since the standard was withdrawn in 2010, it may not be applicable for current designs or projects. It's essential to verify the current edition of the standard or use a more recent replacement standard, such as ASTM A514/A514M.

Rating: N/A (as the standard is withdrawn) Astm A279 Pdf

Recommendation: If you're working on a project that requires quenched and tempered alloy steel plates, consult the current edition of ASTM A514/A514M or other applicable standards.

ASTM A279 PDF: Understanding the Standard for Hard-Drawn Tantalum Wire

The American Society for Testing and Materials (ASTM) is a globally recognized leader in the development and delivery of voluntary consensus standards. One such standard is ASTM A279, which specifically deals with hard-drawn tantalum wire. In this article, we'll take a comprehensive look at ASTM A279, its significance, and what it entails, with a focus on the PDF version of the standard.

What is ASTM A279?

ASTM A279 is a standard specification for hard-drawn tantalum wire used in electronic components. Tantalum is a rare, blue-gray, heavy transition metal used in various electronic applications, including capacitors, resistors, and inductors. The standard covers the requirements for tantalum wire that is drawn to a specific diameter and has undergone a process to harden it.

Importance of ASTM A279

The ASTM A279 standard is crucial for several reasons:

1. Quality Control: The standard ensures that hard-drawn tantalum wire meets specific quality requirements, guaranteeing its performance and reliability in electronic components.
2. Consistency: ASTM A279 provides a unified set of requirements for manufacturers, suppliers, and users, promoting consistency in the production and application of tantalum wire.
3. Safety: By specifying the properties and testing methods for tantalum wire, the standard helps ensure the safety of electronic components and devices.

Content of ASTM A279 PDF

The ASTM A279 PDF provides detailed information on the following aspects:

1. Scope: The standard covers hard-drawn tantalum wire in various diameters, intended for use in electronic components.
2. Referenced Documents: The document lists other ASTM standards and publications referenced in the specification.
3. Terminology: Definitions of terms specific to the standard, such as "hard-drawn" and "tantalum wire," are provided.
4. Ordering Information: The standard outlines the information that should be provided when ordering tantalum wire, including diameter, length, and surface finish.
5. Materials and Manufacture: Requirements for the tantalum wire, including chemical composition, microstructure, and processing, are specified.
6. Requirements: The standard details the necessary properties and testing methods for the wire, such as:
   • Tensile testing
   • Electrical resistivity testing
   • Microstructure examination
   • Surface finish evaluation
7. Test Methods: The document describes the test methods and procedures for evaluating the properties of the tantalum wire.
8. Inspection and Certification: The standard outlines the requirements for inspection, certification, and quality control.

Benefits of ASTM A279 PDF

The ASTM A279 PDF offers several benefits to users, including:

1. Easy Access: The digital format allows for easy access and retrieval of the standard.
2. Search and Navigation: The PDF version enables quick searching and navigation through the document.
3. Print and Sharing: Users can print and share relevant sections or the entire document.

Applications of ASTM A279

The hard-drawn tantalum wire covered by ASTM A279 finds applications in various electronic components, such as:

1. Capacitors: Tantalum capacitors are widely used in electronic circuits for filtering, coupling, and energy storage.
2. Resistors: Tantalum wire is used in resistors, particularly in high-frequency and high-temperature applications.
3. Inductors: Tantalum wire is used in inductors, which are critical components in power supplies, filters, and resonant circuits.

Conclusion

The ASTM A279 standard plays a vital role in ensuring the quality and reliability of hard-drawn tantalum wire used in electronic components. The PDF version of the standard provides easy access to the detailed requirements, test methods, and inspection procedures. By understanding and adhering to this standard, manufacturers, suppliers, and users can ensure the performance and safety of electronic components and devices.

Getting Access to ASTM A279 PDF

The ASTM A279 PDF can be obtained through various channels:

1. ASTM Website: The official ASTM website (astm.org) provides access to the standard, along with other ASTM publications.
2. Document Distributors: Document distributors, such as IHS Standards Store or ANSI Webstore, offer the ASTM A279 PDF for purchase or subscription.
3. Libraries and Research Institutions: Many libraries and research institutions provide access to ASTM standards, including A279, through their collections or subscriptions.

Frequently Asked Questions

Q: What is the scope of ASTM A279? A: The standard covers hard-drawn tantalum wire in various diameters, intended for use in electronic components.

Q: What are the requirements for ASTM A279? A: The standard details the necessary properties and testing methods for the wire, such as tensile testing, electrical resistivity testing, microstructure examination, and surface finish evaluation.

Q: How can I access the ASTM A279 PDF? A: The ASTM A279 PDF can be obtained through the ASTM website, document distributors, or libraries and research institutions.

By understanding the content and significance of ASTM A279, users can ensure the quality and reliability of hard-drawn tantalum wire used in electronic components, promoting safety and performance in various applications.

ASTM A279, formerly titled the Standard Method of Total Immersion Corrosion Test of Stainless Steels, is a historically significant standard for evaluating how stainless steel reacts to corrosive aqueous solutions. 🛠️ Status and Modern Replacement Status: This standard is withdrawn and no longer active.

Replacement: It was officially replaced by ASTM G31, the Standard Guide for Laboratory Immersion Corrosion Testing of Metals. ASTM A279, formerly used for total immersion corrosion

Usage Today: While obsolete for new industrial specifications, it is still frequently cited in academic research and historical data reports to describe specimen preparation (e.g., polishing with 1000-grit paper). 🧪 Technical Scope and Methodology

The original A279 standard focused on total immersion testing, which is often called a "quick and dirty" method for evaluating metal durability. Key Procedures (Historical)

Specimen Preparation: Coupons were typically polished progressively from coarse to fine (up to 1000 grit) to ensure a uniform surface.

Immersion: The steel samples were completely submerged in a corrosive solution for a specific duration.

Measurement: Results were calculated based on overall weight loss, often normalized to units like millimeters per year (mm/yr) or mils per year (mpy).

Observations: Beyond weight loss, testers looked for localized issues like pitting. ⚠️ Potential Confusion with Other Standards

In modern commercial listings, "A279" is sometimes used erroneously or in conjunction with active product specifications for stainless steel components.

(PDF) Corrosion Performance of Mild Steel in Paper Mill Effluent

Title: Standard Specification for Seamless and Welded Ferritic and Austenitic Stainless Steel Tubing for General Service

Designation: ASTM A279 / A279M – 18

Status: Withdrawn (Historical Standard)

Chemical Composition

The standard dictates the exact percentage of elements such as Chromium, Nickel, Molybdenum, and Carbon. For example, a common grade like 304 stainless under this specification must typically contain between 17.5% and 19.5% Chromium and 8.0% to 10.5% Nickel to ensure the formation of the passive oxide layer that prevents rust. Materials : The specification covers quenched and tempered

Quick Specification Template (copy/paste)

ASTM A279 — Austenitic Stainless Steel Tubing, Grade: UNS S31600 (316L), Condition: Annealed; Size: 1.5" OD × 0.120" wall; Length: random/straightened cut to 12 ft; End finish: beveled (for butt weld); Surface finish: pickled and passivated; Tests required: MTR with chemical & mechanical, PMI on request, radiographic inspection of welded seam; Marking: heat number & grade on each piece.

3. Key Requirements of the Standard

When reviewing the technical details of ASTM A279, several factors are strictly controlled: