What is ASTM A213 equivalent to?
May 26, 2025
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What is ASTM A213 Equivalent To? | Stainless Steel Tube Standards Explained
What Is ASTM A213?
ASTM A213 is a standard specification for seamless ferritic and austenitic alloy-steel boiler, superheater, and heat-exchanger tubes. It is widely used in high-temperature and high-pressure applications such as:Power generation (boilers and superheaters),Heat exchangers,Petrochemical processing,Marine and industrial heating systems.
ASTM A213 Tube Type:
Seamless only
Heat-treated
Includes both austenitic stainless steel (e.g., TP304, TP316, TP321) and ferritic alloy steels (e.g., T11, T22, T91)
What Is ASTM A213 Equivalent To?
Here's a list of equivalent standards for common ASTM A213 grades across different global specifications:
| ASTM A213 Grade | EN / DIN Equivalent | JIS Equivalent | UNS Designation |
|---|---|---|---|
| TP304 | EN 1.4301 / X5CrNi18-10 | SUS 304 | S30400 |
| TP304L | EN 1.4307 / X2CrNi18-9 | SUS 304L | S30403 |
| TP316 | EN 1.4401 / X5CrNiMo17-12-2 | SUS 316 | S31600 |
| TP316L | EN 1.4404 / X2CrNiMo17-12-2 | SUS 316L | S31603 |
| TP321 | EN 1.4541 / X6CrNiTi18-10 | SUS 321 | S32100 |
| TP347 | EN 1.4550 / X6CrNiNb18-10 | SUS 347 | S34700 |
| T11 (ferritic) | 13CrMo4-5 | STPA 23 | K11597 |
| T22 (ferritic) | 10CrMo9-10 | STBA 24 | K21590 |
📌 Note: Always confirm mechanical properties and delivery condition before substituting across standards.
Chemical Composition of ASTM A213
What size tube is ASTM A213?
ASTM A213 tubing sizes and thickness usually furnished to this specification are 1/8 inch[3.2 mm] in inside diameter to 5 inch[127 mm] in outside diameter and 0.015 to 0.500 inch[0.4 to 12.7 mm] inclusive, in minimum wall thickness or if specified in the order of average wall thickness.
What is the difference between ASTM A213 and A269?
| Standard | Tube Type | Main Use |
|---|---|---|
| ASTM A213 | Seamless only | Boiler, superheater, exchanger |
| ASTM A269 | Seamless & welded | General corrosion service |
| ASTM A249 | Welded only | Heat exchangers & condensers |
| ASTM A312 | Seamless & welded pipe | Process piping (higher thickness) |
What is the difference between A213 and A312?
ASTM A213 covers seamless ferritic and austenitic stainless steel tubes intended for boiler, superheater, and heat exchanger services. These tubes are typically thin-walled and designed for high-temperature and pressure environments.
ASTM A312, on the other hand, is a specification for seamless and welded stainless steel pipes used in general-purpose pressure applications, such as piping systems for water, oil, and gas. A312 pipes have thicker walls and are available in both seamless and welded forms.
Applications of ASTM A213 Tubing
| Industry | Application Examples |
|---|---|
| Power Generation | Superheater tubes, reheaters, boilers |
| Petrochemical | Heat exchanger tubes, process heating |
| Marine Engineering | Steam system lines, condenser tubing |
| Chemical Processing | High-temp, corrosion-resistant fluid transfer |
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