What is the difference between ASTM A213 and A269?
What is the difference between ASTM A213 and A269?
What is the difference between ASTM A213 and A269?
The ASTM A213 standard applies to seamless tubes used for high-temperature/high-pressure heat transfer (boilers, superheaters) and specifies a minimum wall thickness; while the ASTM A269 standard covers both seamless and welded tubes used in general corrosive environments (instrumentation, chemical industry), specifying an average wall thickness. Therefore, it is more flexible than the A213 standard, but its wall thickness requirements are also less stringent than the minimum wall thickness requirements of A213.
What is ASTM A213?
The ASTM A213 standard covers the standard specifications for seamless austenitic boiler tubes, heat exchanger tubes, and superheater tubes. ASTM A213 tubing exhibits excellent strength and superior corrosion resistance under various stress conditions.
What is ASTM A213?
ASTM A213 is a standard specification primarily used for seamless ferritic and austenitic alloy steel tubes for boilers, superheaters, and heat exchangers. Its materials include various alloy steels, such as T91, a modified 9Cr-1Mo-V-Nb-Ti martensitic heat-resistant steel with excellent creep resistance, suitable for high-temperature environments. In addition, ASTM A213 also includes stainless steel materials, such as TP304, a common austenitic stainless steel with good corrosion resistance and formability. ASTM A213 is a standard specification for seamless tubes used in boilers, superheaters, and heat exchangers.
Suitable for seamless and welded tubes
Designed for high-temperature and high-pressure applications
Commonly used in power plants, petrochemical, and oil and gas systems
Requires flattening, flaring, hardness testing, and hydrostatic testing
View the official ASTM A213 scope
What is ASTM A269?
ASTM A269 is a standard developed by the American Society for Testing and Materials (ASTM), primarily used to specify the technical requirements and performance standards for seamless and welded austenitic stainless steel tubing for general use. This standard covers various specifications and materials of stainless steel tubing, mainly using austenitic stainless steel materials such as 304 and 316L, which have excellent corrosion resistance and mechanical properties, suitable for various corrosive environments and high-temperature and high-pressure conditions. In addition, the ASTM A269 standard also specifies requirements for pipe dimensions, tolerances, materials, manufacturing, processing, testing, and inspection.
Allows the use of welded and seamless tubes
Covers piping suitable for low-pressure or medium-pressure applications
Commonly used in instrumentation, food, dairy, and sanitary systems
Testing includes flattening and flaring tests, but hydrostatic testing is optional unless otherwise specified
Key Differences Table: ASTM A213 vs ASTM A269
| Feature | ASTM A213 | ASTM A269 |
|---|---|---|
| Scope | Boiler, superheater, exchanger tubes | General service, instrumentation |
| Tube Type | Seamless / Welded | Seamless / Welded |
| Wall Thickness | Specified as minimum wall | Specified as average wall |
| Operating Conditions | High temperature & pressure | Low to moderate pressure |
| Hydrostatic Test | Mandatory | Optional unless ordered |
| Surface Finish Options | Pickled / Bright Annealed | BA / EP / Polished (commonly for sanitary) |
| Common Grades | TP304H, TP316H, TP321H, TP347H | TP304L, TP316L, TP316Ti |
| Industry Use | Power, chemical, refinery, exchanger | Food, pharma, instrumentation |
ASTM A213 and ASTM A269 standards
| Standard | Tolerance of Outside Diameter (mm) |
Wall thickness(%) | Length Tolerance(mm) | ||
| ASTM A269 | <38.1 | ±0.13 | |||
| ≥38.1~<88.9 | ±0.25 | ||||
| ≥88.9-<139.7 | ±0.38 | ±15.0% | OD <38.1 | +3.2-0.0 | |
| ≥139.7~<203.2 | ±0.76 | ±10.0% | 0D ≥38.1 | +4.0-0.0 | |
| ≥203.2-<304.8 | ±1.01 | ||||
| ≥304.8-<355.6 | ±1.26 | ||||
| ASTM213 | D＜25.4 | ± 0.10 | +20/0 | +3.0/0 | |
| 25.4~38.1 | ±0.15 | ||||
| 38.1~50.8 | ±0.20 | ||||
| 50.8~63.5 | ±0.25 | +22/0 | +5.0/0 | ||
| 63.5~76.2 | ±0.30 | ||||
| 76.2~101.6 | ±0.38 | ||||
| 101.6~190.5 | +0.38/-0.64 | ||||
| 190.5~228.6 | +0.38/-1.14 | ||||
ASTM A213 (Seamless Tubes)
Applications: High-temperature and high-pressure conditions (boilers, superheaters, heat exchangers).
Structure: Seamless tubes only.
Wall Thickness: Minimum wall thickness (e.g., 0%, +20%) or average wall thickness (±10%).
Main Features: Designed for critical heat transfer and high-strength applications.
ASTM A269 (Seamless and Welded Tubes)
Applications: General corrosion-resistant applications, low or high-temperature environments (instrumentation, chemical processing, food processing).
Structure: Both seamless and welded tubes are available.
Wall Thickness: Average wall thickness only (±10%), no minimum wall thickness requirement.
Main Features: Versatile, good corrosion/oxidation resistance, commonly used for instrumentation tubing.
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Gnee Steel also offers custom stainless steel 304 products in various sizes and specifications. Please send us your drawings for a quote!
Gnee Steel is a supplier of ASTM A213 stainless steel 304, offering a wide range of products including: Pipes: Seamless pipes: Sizes: 4 - 219 mm; Thickness: 0.5 - 20 mm; Welded pipes: Sizes: 5.0 - 1219.2 mm; Thickness: 0.5 - 20 mm; Plates: Plate thickness 0.1 to 100 mm; Plate width 10-2500 mm; Strips; Alloy round bars: Diameter 3-800 mm; Flat bars: Thickness 2-100 mm; Width: 10-500 mm; Hexagonal bars: 2-100 mm; Wires and extruded profiles. We collaborate with steel mills to provide our customers with 304 stainless steel, whose products meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells ASTM A213 stainless steel 304, pipes, tubes, plates, strips, sheets, round bars, flat bars, forged billets, hexagonal steel, wires, and extruded profiles. Please feel free to contact us via email at sales@gneestainless.com for a quote.
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