Astm A279 Pdf ((top)) -

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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 The standard was withdrawn in 2010 and replaced by ASTM A514/A514M.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: Astm A279 Pdf

However, since the standard was withdrawn in 2010, it may not be applicable for current designs or projects.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Rating: N/A (as the standard is withdrawn)

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, 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.

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. You're looking for a review of the ASTM A279 PDF

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

ASTM A249 covers welded austenitic steel tubes for boilers and heat exchangers, featuring mandatory mechanical tests like flattening and reverse-flattening to ensure weld integrity [1.1]. The specification mandates rigorous non-destructive examination (NDE) methods, including eddy current or hydrostatic testing, to ensure material reliability under high-pressure conditions [1.1]. For detailed technical specifications, consult the ASTM A249 standard documentation.

ASTM A279 is a withdrawn standard that was formerly titled "Standard Test Method for Total Immersion Corrosion Test of Stainless Steels."

Because the standard has been officially withdrawn by ASTM International without a direct replacement, it is no longer available as an active technical document in their current catalog. Key Details about ASTM A279

Purpose: It provided a procedure for conducting total immersion corrosion tests on stainless steels to determine their resistance to various corrosive environments.

Withdrawal Status: It was discontinued in the late 20th century. In many cases, corrosion testing for stainless steels shifted toward more specific standards like ASTM G31 (Standard Guide for Laboratory Immersion Corrosion Testing of Metals). Current Alternatives: Materials : The specification covers quenched and tempered

ASTM G31: The general industry standard for laboratory immersion corrosion testing.

ASTM A262: Specifically covers detecting susceptibility to intergranular attack in austenitic stainless steels. How to Access the Text

Since ASTM standards are copyrighted, the full text cannot be legally reproduced here. If you need the specific historical text for a legacy project or legal compliance, you can:

ASTM Historical Custom Collections: Purchase a PDF copy of the historical version directly from the ASTM International website.

Technical Libraries: University engineering libraries or large municipal libraries often keep physical archives of older ASTM "Book of Standards" volumes.

Part 1: The Case of the Missing ASTM A279

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.

Specifying A279 for Projects — Practical Tips

  1. Specify grade and condition: e.g., “ASTM A279, UNS S31600, annealed.”
  2. Include dimensions and tolerances: OD, ID, wall thickness, length, and straightness.
  3. State end finish and joinery: Plain ends, beveled, or grooved for welding; include welding procedure requirements.
  4. Require testing: Request mill test reports (MTRs) showing chemical analysis, mechanical tests, heat-treatment record, and nondestructive examination (if needed).
  5. Surface and cleanliness: Specify passivation, pickling, or descaling if the service is hygienic or highly corrosive.
  6. Traceability and marking: Require heat number, material grade, and manufacturer stamping.

2. Scope and Application

The ASTM A279 specification covered both seamless and welded tubing.

The standard encompassed several grades of ferritic and austenitic stainless steel, allowing for selection based on specific corrosion resistance and mechanical needs. The tubing was typically supplied in the annealed condition, though other heat treatments were permitted if specified.

1. Scope and Application

The primary scope of ASTM A279 is to define the standards for hot- and cold-finished bars of stainless steel. While it is widely used for general applications, its specific focus on pressure vessels distinguishes it from other stainless steel bar specifications.

Key applications include: