ASTM A213 TP304 stainless steel boiler tubes
ASTM A213 TP304 stainless steel boiler tubes
ASTM A213 TP304 is the standard specification for seamless stainless steel tubing used in boilers, superheaters, and heat exchangers. Key features include its chromium and nickel content, which provides excellent corrosion and oxidation resistance, and its seamless construction, which provides uniform strength. Suitable for high-temperature applications, these tubings are easy to fabricate and must meet various testing requirements to ensure reliable operation under pressure.
What are the specifications of SA 213 TP 304?
SA 213 TP 304 contains 18% chromium, carbon, manganese, phosphorus, sulfur, silicon, and nickel. Additionally, trace amounts of molybdenum, nitrogen, niobium, and titanium are added. SA 213 TP 304 has a lower density than standard 304.
ASTM A213 TP304 Seamless Tube Specifications
| Standard | ASTM A213 |
|---|---|
| Grade | TP304 |
| Tube Type | Seamless Tube |
| Finishes | Annealing Pickling Bright Annealing |
| Outside Diameter | 1/8″ – 5″ |
| Thickness | 0.015″ – 0.500″ |
| Length | Fixed And Random Length |
| Application | Boiler, Heat Exchanger, Super Heater |
A213 304 Chemical Composition
| Grade | C | Si | Mn | Cr | Ni | Mo | S | P |
|---|---|---|---|---|---|---|---|---|
| TP304 | 0,08 | 1,0 | 2 | 18 – 20 | 8 – 11 | – | 0,03 | 0,045 |
A213 304 Mechanical Properties
| Grade | Tensile Strength(Mpa) | Yield Point(Mpa) | Elongation(%) | Hardness(HRB) | Solution Temperature |
|---|---|---|---|---|---|
| TP304 | 515 | 205 | 35 | 90 | 1040 |
ASTM A213 Permissible Variations In Outside Diameter, Wall Thickness And Length
| OD, mm | W.T. mm | L, mm | |
|---|---|---|---|
| ≤25.4 | ±0.10 | +20%, 0%, OD>50, T>5.6 AVG wall +/-10% |
OD<50.8,+3mm, OD>=50.8, +5mm |
| 25.4~38.1 | ±0.15 | ||
| 38.1~50.8 | ±0.2 | ||
| 50.8~63.5 | ±0.25 | ||
| 63.5~76.2 | ±0.3 | ||
| 76.2~101.6 | ±0.38 | ||
ASTM A213 TP304 Seamless Tube Manufacturing
Manufacturing Capacity
6 cold rolling mills
10 cold drawing mills
annealing furnaces
pipe cutting machines
straightening machines
pickling tanks
Testing Devices
PMI tester
Universal test machine
Eddy current test machine
Hydrostatic test machine
Ultrasonic test machine
Corrosion testing device
Rockwell hardness
304 Boiler Tube Applications
Boilers, superheaters, heat exchangers, and general high-temperature and high-pressure applications.
Technical Requirements
Testing: Steel tubes undergo various tests, including hydrostatic testing, nondestructive testing, and tensile testing, to ensure they meet specification requirements.
Finishing: Unless bright annealed, steel tubes must be pickled to a scale-free state.
Dimensions and Tolerances: This standard covers a wide range of sizes and thicknesses and specifies minimum wall thickness, outside diameter, and length.
Ordering: Purchasers must specify their requirements, such as quantity, grade, condition (hot-finished or cold-finished), and size.
Gnee Steel specializes in the production of a wide range of stainless steel products. Gnee Steel's product packaging includes: Steel Strapping: Pipes with an outer diameter of 3 inches or less are typically strapped together with polypropylene film to prevent rust during ocean shipping, and then secured with steel strapping. Wooden Cases/Crates: Pipes are typically packaged in wooden cases or crates to protect the pipes during transportation, especially those that are longer or have larger diameters. Seaworthy Export Packaging: Suppliers typically use standard seaworthy export packaging methods, which may include a variety of materials and techniques to protect the pipes during transportation. Tarpaulin Packaging: This prevents rain, seawater, and other external factors from penetrating the export crates during transportation. Gnee Steel specializes in the production and sale of alloy materials. Gnee Steel's products are widely used in the aerospace, chemical, power, automotive, and nuclear energy sectors, and we can provide customized alloy material solutions based on customer needs. For alloy material pricing or customized alloy material solutions, please contact us for a quote: ru@gneesteelgroup.com
