ASTM A943 TP304H, TP309H, TP309HCb, TP310H, TP310HCb Seamless Steel Tube Austenitic Stainless Steel Pipes For High Temperature Service
Material
ASTM A943 specifies the requirements for austenitic stainless steel pipes designed for high-temperature service. The grades covered under this specification include TP304H, TP309H, TP309HCb, TP310H, and TP310HCb. These materials are known for their excellent oxidation resistance and high-temperature strength.
Specification
The ASTM A943 standard outlines the manufacturing processes, mechanical properties, and chemical compositions required for these stainless steel pipes. The pipes are typically produced in a seamless form, which enhances their strength and durability.
Key Features
- High-Temperature Resistance: Suitable for applications involving elevated temperatures.
- Corrosion Resistance: Excellent resistance to oxidation and corrosion.
- Seamless Construction: Provides enhanced strength and reliability.
- Versatile Applications: Suitable for various industries, including petrochemical and power generation.
Chemical Composition
| Grade |
C (%) |
Mn (%) |
P (%) |
S (%) |
Si (%) |
Cr (%) |
Ni (%) |
Mo (%) |
Nb (%) |
| TP304H |
0.08 |
2.00 |
0.045 |
0.030 |
0.75 |
18.00 |
8.00 |
- |
- |
| TP309H |
0.20 |
2.00 |
0.045 |
0.030 |
0.75 |
22.00 |
12.00 |
- |
- |
| TP309HCb |
0.20 |
2.00 |
0.045 |
0.030 |
0.75 |
22.00 |
12.00 |
0.75 |
0.10 |
| TP310H |
0.25 |
2.00 |
0.045 |
0.030 |
0.75 |
25.00 |
20.00 |
- |
- |
| TP310HCb |
0.25 |
2.00 |
0.045 |
0.030 |
0.75 |
25.00 |
20.00 |
0.75 |
0.10 |
Mechanical Properties
| Grade |
Yield Strength (MPa) |
Tensile Strength (MPa) |
Elongation (%) |
Hardness (HB) |
| TP304H |
205 |
515 |
40 |
187 |
| TP309H |
205 |
515 |
40 |
187 |
| TP309HCb |
205 |
515 |
40 |
187 |
| TP310H |
205 |
515 |
40 |
187 |
| TP310HCb |
205 |
515 |
40 |
187 |
Steel Grade
The steel grades TP304H, TP309H, TP309HCb, TP310H, and TP310HCb are specifically designed for high-temperature applications, providing a balance of strength and corrosion resistance.
Application
These stainless steel pipes are widely used in:
- Petrochemical Industries: For piping systems that handle high-temperature fluids.
- Power Generation: In boilers and heat exchangers.
- Aerospace: For components that require high strength and oxidation resistance.
- Chemical Processing: In reactors and heat exchangers.
Possible Alternative Grades
While ASTM A943 grades are specifically designed for high-temperature applications, alternative grades that may be considered include:
- ASTM A312 TP316: Offers better corrosion resistance.
- ASTM A269 TP304L: Suitable for lower temperature applications with good corrosion resistance.
- ASTM A213 TP321: Provides excellent resistance to intergranular corrosion.
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
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.
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A: Yes, we could offer the sample for free charge but need pay the cost of freight.
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A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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