ASTM A213 Seamless Steel Boiler Tube For Heat-Exchanger
Material Overview
The ASTM A213 specification covers seamless ferritic and austenitic steel boiler tubes for high-pressure, high-temperature services. These tubes are extensively used in heat-exchangers and condensers in various industries such as power generation, petrochemical, and refineries. This article provides an in-depth look into the key features, chemical composition, mechanical properties, steel grades, applications, and possible alternative grades for ASTM A213 seamless steel boiler tubes.
Key Features
The ASTM A213 seamless steel boiler tubes offer several key features that make them suitable for heat-exchanger applications:
-
Seamless Construction: These tubes are manufactured from solid billets using a seamless process, ensuring high structural integrity and enhanced resistance to corrosion and stress.
-
High Temperature Resistance: The tubes exhibit exceptional resistance to high temperatures and can withstand extreme operating conditions found in boilers and heat-exchangers.
-
Excellent Corrosion Resistance: The use of ferritic and austenitic stainless steels in the tube production ensures excellent resistance to corrosion caused by high-temperature steam and corrosive gases.
-
Superior Mechanical Properties: The tubes boast exceptional mechanical properties, including high tensile strength, yield strength, and hardness, enabling them to withstand high-pressure environments.
Chemical Composition
The chemical composition of ASTM A213 seamless steel boiler tubes may vary depending on the specific steel grade. However, the typical composition is as follows:
Ferritic Steels
| Element | Minimum (%) | Maximum (%) |
| Carbon (C) | 0.050 | - |
| Manganese (Mn) | - | 1.00 |
| Phosphorus (P) | - | 0.040 |
| Sulfur (S) | - | 0.030 |
| Silicon (Si) | - | 1.00 |
| Chromium (Cr) | 11.5 | 13.5 |
Austenitic Steels
| Element | Minimum (%) | Maximum (%) |
| Carbon (C) | 0.08 | - |
| Manganese (Mn) | - | 2.00 |
| Phosphorus (P) | - | 0.045 |
| Sulfur (S) | - | 0.030 |
| Silicon (Si) | - | 1.00 |
| Nickel (Ni) | 18.0 | 20.0 |
| Chromium (Cr) | 8.00 | 12.0 |
Mechanical Properties
The mechanical properties of ASTM A213 seamless steel boiler tubes are determined through various tests, such as tensile strength, yield strength, and hardness. The minimum mechanical properties for different steel grades are as follows:
Ferritic Steels
| Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
| Grade T11 | 415 | 220 | 30 | ≤ 85 |
| Grade T22 | 415 | 205 | 30 | ≤ 85 |
Austenitic Steels
| Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
| Grade TP304 | 515 | 205 | 35 | ≤ 90 |
| Grade TP316 | 515 | 205 | 35 | ≤ 90 |
Steel Grade and Application
ASTM A213 seamless steel boiler tubes are available in various steel grades, each with its own applications:
-
Grade T11: This steel grade is suitable for applications involving high temperatures and pressures, commonly used in power generating plants.
-
Grade T22: Commonly used in power plants, Grade T22 exhibits excellent resistance to high-temperature environments and provides superior mechanical properties.
-
Grade TP304: This austenitic steel grade finds its usage in heat-exchangers and condensers in chemical and food processing industries due to its excellent corrosion resistance.
-
Grade TP316: Known for its enhanced corrosion resistance and high-temperature stability, Grade TP316 is used in industries such as pharmaceuticals, petrochemicals, and refineries.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
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.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
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.
Contact Now
