What Is ASTM A249 Material Equivalent To?

ASTM A249 is equivalent to several global stainless steel grades like EN 1.4301 (304), 1.4404 (316L), and SUS304/316, but the tube manufacturing and quality assurance requirements are much higher under A249. Always verify that your international material supplier complies with weld integrity, annealing, and mechanical testing as defined in ASTM A249 when substituting equivalents.

What Is ASTM A249 Material Equivalent To?

ASTM A249 is a standard specification for welded austenitic stainless steel tubes, mainly used in heat exchangers, condensers, superheaters, and other high-temperature, high-pressure environments. It includes stringent requirements for weld bead flattening, expansion, and corrosion resistance, making it suitable for demanding industrial applications.

ASTM A249 Equivalent Materials in International Standards

⚠️ Note: While these are considered comparable equivalents, application-specific properties (e.g., flattening test, grain size control, weld quality) under ASTM A249 are often stricter than their base material equivalents used in general tubing.

What is the chemical composition of ASTM A249?

What are the mechanical properties of ASTM A249?

 What is the difference between ASTM A249 and A269?

What sets ASTM A249 apart from other tubing standards (like ASTM A269 or A270) is that it includes:

Weld bead performance tests (flattening, reverse flattening)

More rigorous mechanical and corrosion testing

Requirements for bright annealing or pickling

Application in high-pressure and cyclic temperature environments

When to Use ASTM A249 vs Other Tube Standards