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ASTM A249 is a specification that covers nominal-wall-thickness welded tubes made of austenitic stainless steel for use in boilers, superheaters, heat exchangers, and condensers. It specifically focuses on straight seam welded pipes used in high-temperature applications.
The ASTM A249 stainless steel tube is made from austenitic stainless steel grades such as TP304, TP304L, TP316, and TP316L. These grades provide excellent corrosion resistance, high strength, and good mechanical properties at elevated temperatures. The tubes are produced with a nominal wall thickness ranging from 0.020 inches (0.51 mm) to 0.220 inches (5.59 mm), and outer diameters ranging from 0.5 inches (12.7 mm) to 5 inches (127 mm).
| Grade | C(max) | Mn(max) | P(max) | S(max) | Si(max) | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|---|
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 18-20 | 8-11 | - | - |
| TP304L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 18-20 | 8-12 | - | - |
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 1.00 | 16-18 | 11-14 | 2-3 | 0.10 |
| TP316L | 0.035 | 2.00 | 0.045 | 0.030 | 1.00 | 16-18 | 10-14 | 2-3 | 0.10 |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| TP304 | >515 | >205 | >35 |
| TP304L | >485 | >170 | >35 |
| TP316 | >515 | >205 | >35 |
| TP316L | >485 | >170 | >35 |
The steel grades used in ASTM A249 are TP304, TP304L, TP316, and TP316L. These grades are widely recognized and extensively used in various industries for their exceptional properties and performance.
ASTM A249 stainless steel tubes are primarily used in boiler systems, heat exchangers, and condensers. They are suitable for applications involving high temperatures and corrosive environments. These tubes are commonly employed in industries such as chemical, petrochemical, power generation, and food processing.
While the ASTM A249 specification focuses on TP304, TP304L, TP316, and TP316L grades, there are alternative grades that can be considered for specific applications. Some potential alternatives include:
When considering alternative grades, it is important to evaluate their specific properties and compatibility with the intended application before making a selection.
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
