ASTM A269 vs.A249

ASTM A269 vs ASTM A249: What's the Difference?

ASTM A269ASTM A249

 

ASTM A269?

ASTM A269 covers seamless and welded austenitic stainless steel tubing intended for general corrosion-resistant and high-temperature service.

The tubing can be supplied in cold-worked or annealed condition.

Common grades include 304, 304L, 316, and 316L stainless steel.

 

ASTM A249?

ASTM A249 specifies welded stainless steel tubing for pressure vessels and boilers.

It is mainly used in pressure-containing applications, such as boiler tubes, heat exchangers, and condensers.

Common grades also include 304, 304L, 316, and 316L stainless steel.

 

Key Differences Between ASTM A269 and ASTM A249

	ASTM A269	ASTM A249
	Cold-worked or annealed

 

Can ASTM A269 tubing be used in pressure vessels?

Generally, ASTM A269 tubing is not recommended for pressure vessels where ASTM A249 tubing is specified because A249 tubing is designed and tested for pressure-containing applications.

ASTM A269 tubing, with its availability in seamless and welded forms and smoother finishes, is often preferred for sanitary food and beverage applications.

ASTM A249 tubing, being welded and thicker, is often more economical for pressure vessel use, while ASTM A269 may cost more due to additional processing and surface finish requirements.

Both standards commonly use similar stainless steel grades like 304 and 316, but their processing and testing differ.