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ASTM A213 stainless steel tubing is a specifically engineered seamless alloy steel tube designed to withstand high temperature and pressure applications. This exceptional tubing is compliant with ASTM A213 standards for ferritic and austenitic alloy steel boilers, superheaters, and heat exchanger tubing. The ASTM A213 specification includes minimum wall thickness requirements for seamless ferritic and austenitic steel, superheater and boiler tubes, and austenitic steel heat exchanger tubes. The grade listings include T5, T11, T12, T22, T91, TP304, TP304L, TP316, TP316L, TP317, TP321, TP347, and TP348. Whether you need high-quality tubing for industrial or commercial use, ASTM A213 stainless steel tubing is an ideal choice for your demanding applications.
- The ASTM A213 standard provides specifications for seamless alloy steel tubes used in boilers, superheaters, and heat exchangers. These tubes are designed to withstand high temperatures and pressures while maintaining their structural integrity. The standard covers a wide range of ferritic and austenitic alloys, ensuring that the tubes meet the required mechanical properties, chemical composition, and dimensional requirements. By adhering to the ASTM A213 standard, manufacturers can ensure the reliable and efficient performance of these crucial components in various industrial applications.
- Among the various industries where ASTM A213 stainless steel seamless tube finds extensive applications, the chemical, pharmaceutical, food, shipbuilding, oil, and gas sectors are prominent. Notably, TP304, TP304L, TP316, TP316L are highly favored grades within these industries. This seamless tube’s versatility and durability make it an excellent choice for numerous operations in the above-mentioned fields.
The ASTM A213 stainless steel tube is composed of various chemical elements. To be more specific, it consists of a combination of different elements in order to achieve its desired properties. These elements include carbon (C), manganese (Mn), phosphorus (P), sulfur (S), silicon (Si), chromium (Cr), nickel (Ni), and molybdenum (Mo).
Carbon is an essential element in steel and helps improve its strength and hardness. Manganese is added to enhance the material's mechanical properties and contribute to its overall strength. Phosphorus and sulfur are usually present in small amounts and help improve the steel's machinability.
Silicon is added to improve the steel's resistance to oxidation and high-temperature strength. Chromium is a key element that provides corrosion resistance and gives stainless steel its characteristic luster. Nickel is added to enhance the steel's toughness, ductility, and general corrosion resistance.
Lastly, molybdenum is added to improve the tube's resistance to pitting and crevice corrosion, especially in chloride environments. These chemical elements work together to create a stainless steel tube that offers excellent mechanical properties, durability, and resistance to various forms of corrosion.
| Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo | Ni | Cu |
| TP304 | S30400 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | - | 8.0-11.0 | - |
| TP304L | S30403 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | - | 8.0-13.0 | - |
| TP316 | S31600 | 0.08 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 2.00-3.00 | 10.0-14.0 | - |
| TP316L | S31603 | 0.035 | 2 | 0.045 | 0.03 | 1 | 16.0-18.0 | 2.00-3.00 | 11.0-14.0 | - |
| 316Ti | S31635 | 0.08 | 2 | 0.045 | 0.03 | 0.75 | 16.0-18.0 | 2.00-3.00 | 10.0-12.0 | - |
| TP317 | S31700 | 0.08 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 3.0-4.0 | 11.0-14.0 | - |
| TP317L | S31703 | 0.035 | 2 | 0.045 | 0.03 | 1 | 18.0-20.0 | 3.0-4.0 | 11.0-15.0 | - |
| TP321 | S32100 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | - | 9.0-12.0 | - |
| 321H | S32109 | 0.04-0.1 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | - | 9.0-12.0 | - |
| 310 | S31000 | 0.25 | 2 | 0.045 | 0.03 | 1.5 | 24.0-26.0 | 0.75 | 19.0-22.0 | - |
| TP310S | S31008 | 0.08 | 2 | 0.045 | 0.03 | 1 | 24.0-26.0 | 0.75 | 19.0-22.0 | - |
| TP347 | S34700 | 0.08 | 2 | 0.045 | 0.03 | 1 | 17.0-19.0 | - | 9.0-13.0 | - |
| 254SMO | S31254 | 0.02 | 1 | 0.03 | 0.01 | 0.8 | 19.5-20.5 | 6.0-6.5 | 17.5-18.5 | 0.5-1.0 |
| AL-6XN | N08367 | 0.03 | 2 | 0.04 | 0.03 | 1 | 20.0-22.0 | 6.0-7.0 | 23.5-25.5 | 0.75 |
| F904L | N08904 | 0.02 | 2 | 0.04 | 0.03 | 1 | 19.0-23.0 | 4.0-5.0 | 23.0-28.0 | 1.0-2.0 |
ASME SA213 Stainless Steel Tube Mechanical Properties
| Mechanical properties | Tensile, min, ksi[MPa】 | Yield, min, ksi[MPa】 | Elongation, %(min) | Hardness, HB（max） |
| TP304 | 75【515】 | 30【205】 | 35 | 192 |
| TP304L | 70【485】 | 25【170】 | 35 | 192 |
| TP316 | 75【515】 | 30【205】 | 35 | 192 |
| TP316L | 70【485】 | 25【170】 | 35 | 192 |
| 316Ti | 75【515】 | 30【205】 | 35 | 192 |
| TP317 | 75【515】 | 30【205】 | 35 | 192 |
| TP317L | 75【515】 | 30【205】 | 35 | 192 |
| TP321 | 75【515】 | 30【205】 | 35 | 192 |
| 321H | 75【515】 | 30【205】 | 35 | 192 |
| TP310 | 75【515】 | 30【205】 | 35 | 192 |
| TP310S | 75【515】 | 30【205】 | 35 | 192 |
| TP347 | 75【515】 | 30【205】 | 35 | 192 |
| S31254 | 98【675】 | 43【310】 | 35 | 220 |
| N08367 | 100【690】 | 45【310】 | 30 | 241 |
| N08926 | 94【650】 | 43【295】 | 35 | 256 |
| N08904 | 71【490】 | 31【215】 | 35 | 192 |
The production process of ASME SA213 stainless steel tube usually involves melting raw materials such as iron, nickel and chromium in an electric arc furnace. The molten metal is then cast into billets, which are heated and rolled into seamless pipes using a piercing machine. These tubes are then further processed through a series of cold drawing and cold rolling operations to bring ASTM A213 stainless steel tubes to the desired dimensions and surface finish. The manufacturing process of ASTM A213 seamless tubing adopts cold drawing, cold rolling, cold drawing and other technologies to ensure the dimensional accuracy and surface quality of the tube. In addition, ASTM A213 stipulates the chemical composition, mechanical properties, corrosion resistance and other requirements of seamless pipes, and also regulates the appearance, size and marking of A213 stainless steel tubing.
ASTM A213 Seamless Tubing Specifications
| Pipe Specifications | ASTM A213 / ASME SA 213 |
| Type | Seamless Tube |
| Outside Diameter | OD: 1/4"~48" |
| Wall Thickness | SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
| Grade | TP304,TP304L,TP316,TP316L,316Ti TP317,TP317L,TP321,TP310S,TP347,S31254,N08367,N08926,N08904 |
| Manufacture Process | Hot rolling /Hot work , Cold rolling |
| Form | Round, Square, Rectangular, Hydraulic,etc |
| End | Plain End, Beveled End, Treaded |
ASTM A213 Dimension Tolerance Table
| Outside Diameter(mm) | Thickness（%） | Length（mm） | |||
| D＜25.4 | +0.1/-0.1 | D＜38.1 | +20%/0 | D＜50.8 | +3/0 |
| 25.4~38.1 | +0.15/-0.15 | ||||
| 38.1~50.8 | +0.2/-0.2 | ||||
| 50.8~63.5 | +0.25/-0.25 | D≥38.1 | +22%/0 | D≥50.8 | +5/0 |
| 63.5~76.2 | +0.3/-0.3 | ||||
| 76.2~101.6 | +0.38/-0.38 | ||||
| 101.6~190.5 | +0.38/-0.64 | ||||
| 190.5~228.6 | +0.38/-1.14 | ||||
Stainless steel tubes produced according to ASTM A213 standards are known for their high-temperature resistance and corrosion resistance. A213 stainless steel tubes are ideal for high-temperature and high-pressure environments such as boilers, heat exchangers, and superheaters.
- Boiler tubes: ASME SA213 TP304 tubing is used in boilers to transfer heat from the combustion chamber to water, which is then converted into steam.
- Superheater Tubes: Superheater tubes are used to further heat the steam produced by the boiler, increasing its temperature and energy content.
- Heat Exchanger Tubing: ASME SA213 TP316 tubing is used in various industrial applications to transfer heat from one fluid to another.
- Petrochemical industry: ASTM A213 stainless steel tubes are also used in the petrochemical industry for the production of chemicals and the refining of petroleum products.
The stainless steel pipes specified by ASTM A213 are made of high-quality raw materials, and the production process is strictly in accordance with international standards to ensure that the quality of the pipes reaches the highest level. During use, attention should be paid to the care and maintenance of ASME SA213 TP316 tubing to avoid scratches on the surface, so as to ensure the long-term service life and safety performance of A213 stainless steel tubes.
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