It is important not to confuse ASTM A279 with other similar specifications:
Quality assurance was a critical component of the ASTM A279 standard. The following tests were standard requirements:
A: No. ASME SA-279 is a carbon steel forging specification that was withdrawn in 1997 (replaced by ASME SA-105). That is for pipe flanges and fittings, not castings. Again, irrelevant to heat-resistant alloys.
ASTM A279 was a historical, officially withdrawn standard (replaced by ASTM G31) that provided methodologies for the total immersion corrosion testing of stainless steels. Although obsolete as a standard, its, procedures for calculating corrosion rates via mass loss remain relevant, and the designation is occasionally utilized in industrial product catalogs for austenitic and high-temperature steel grades. Learn more about the, material specifications on the APN Steel ASTM A279 product page GlobalSpec ASTM A279 Stainless Steel Tubes
While "ASTM A279" is frequently listed by suppliers alongside common standards like
, it is often a misidentification or a niche reference to specialized stainless steel components, as the primary active standards for stainless bars and tubes are
Below is an outline for an "interesting paper" that explores this topic by focusing on the industrial application of high-performance stainless steel tubes and bars often associated with this designation.
Paper Title: The Invisible Backbone: Evaluating Material Reliability in ASTM A279-Grade Stainless Steel Infrastructure 1. Introduction The Quest for Durability Astm A279 Pdf
: Discuss the evolution of stainless steel standards in high-stress environments. The Designation Mystery : Briefly address how designations like appear in specialized manufacturing sectors for seamless and welded tubes 2. Material Composition and Metallurgy The Chromium-Nickel Balance : Explain how grades such as 304 and 316
provide the foundation for this material's corrosion resistance. Mechanical Integrity : Detail the tensile strength yield strength
requirements that ensure these components survive high-pressure applications. 3. Industrial Applications Pressure and Heat : Analyze the use of these materials in boiler and pressure vessel construction. Corrosive Environments : Highlight case studies in marine and chemical processing
where pitting and crevice corrosion resistance are non-negotiable. 4. Comparative Analysis A279 vs. Industry Standards : Compare the similarities and differences with (general-purpose bars) and (pressure vessel bars). Manufacturing precision : Discuss the importance of accurate dimensions and sturdily built construction for EFW and ERW tubes 5. Future Outlook astm-a479.pdf
ASTM A279 was an ASTM International standard titled "Method of Total Immersion Corrosion Test of Stainless Steels". It was later withdrawn and replaced by ASTM G31, which currently governs the standard practice for laboratory immersion corrosion testing of metals.
While the original standard is no longer active, the term "ASTM A279" is frequently used by manufacturers and suppliers to refer to high-precision stainless steel products—particularly bars, shapes, and tubes—often in conjunction with active standards like ASTM A276 (for bars and shapes) or ASTM A269 (for tubing). Core Overview of the Specification
In modern industrial contexts, materials labeled under this designation are typically austenitic stainless steels known for their exceptional corrosion resistance and mechanical durability. It is important not to confuse ASTM A279
Primary Focus: Corrosion resistance and dimensional accuracy. Common Grades: 304, 304L, 316, 316L, 321, and 347.
Product Forms: Seamless tubes, welded tubes, hexagonal rods, and round bars. Chemical & Mechanical Properties
Products associated with this designation must meet strict chemical requirements to ensure performance in harsh environments. Typical Range (Austenitic Grades) Chromium (Cr) 16.0% – 20.0% (provides corrosion resistance) Nickel (Ni) 8.0% – 14.0% (improves toughness and ductility) Molybdenum (Mo) 2.0% – 3.0% (added in Grade 316 for pitting resistance) Carbon (C) 0.03% – 0.08% max (lower in "L" grades for weldability) Mechanical Benchmarks (Annealed State): Tensile Strength: Often exceeds 75-90 ksi. Yield Strength: Typically starts at 30-45 ksi.
Hardness: Generally measured via Brinell or Rockwell scales (e.g., 160-190 Brinell). Applications & Industries
Because of its roots in corrosion testing and its association with high-grade stainless alloys, materials meeting these criteria are used in specialized sectors:
Petrochemical & Gas: For handling acidic fluids and high-pressure environments.
Pharmaceutical & Food: Where non-porous, easy-to-sanitize surfaces are required. ASTM A279 was a historical, officially withdrawn standard
Marine: Hexagonal and round bars used in saltwater-resistant hardware.
Boilers & Pressure Vessels: Often cross-certified with ASTM A479 for high-temperature structural use. ASTM A279 - Wikidata
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)
Once you download the correct ASTM A297 PDF, here is how to use it effectively:
This paper provides a comprehensive analysis and summary of ASTM A279, the historical Standard Specification for Seamless and Welded Ferritic and Austenitic Stainless Steel Tubing for General Service. This standard was historically utilized to define the requirements for stainless steel tubes used in structural, mechanical, and general corrosive environments where high temperatures and pressures were not the primary concern. This document outlines the scope, chemical composition, mechanical properties, and testing methodologies defined within the standard, serving as a reference for engineers dealing with legacy systems or material substitution.
Since the PDF you are looking for is likely the ASTM A297 PDF, you must obtain it from authorized sources. Never download "free PDFs" from file-sharing sites—they are often outdated, corrupted, or illegally scanned, which fails audit compliance.