ASTM A999 TP304H, TP309H, TP309HCb, TP310H, TP310HCb Stainless Steel Tube Alloy And Stainless Steel Pipe
General Requirements
ASTM A999 is a standard specification that covers the requirements for stainless steel tubes and pipes used in various applications. The grades TP304H, TP309H, TP309HCb, TP310H, and TP310HCb are specifically designed to meet high-temperature and high-stress environments, making them suitable for industries such as petrochemical, power generation, and heat exchangers.
Material and Specification
The materials specified under ASTM A999 are designed to provide excellent corrosion resistance and mechanical properties at elevated temperatures. Each grade has unique characteristics that make it suitable for specific applications.
Key Features
- High-Temperature Resistance: Designed to withstand elevated temperatures without losing mechanical integrity.
- Corrosion Resistance: Excellent resistance to oxidation and corrosion in various environments.
- Versatility: Suitable for a wide range of applications, including pressure vessels and heat exchangers.
Chemical Composition
| Grade | C (%) | Mn (%) | Si (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
| TP304H | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 18.00 | 8.00 | - |
| TP309H | 0.20 | 2.00 | 0.75 | 0.045 | 0.030 | 22.00 | 12.00 | - |
| TP309HCb | 0.20 | 2.00 | 0.75 | 0.045 | 0.030 | 22.00 | 12.00 | 1.00 |
| TP310H | 0.25 | 2.00 | 0.75 | 0.045 | 0.030 | 25.00 | 20.00 | - |
| TP310HCb | 0.25 | 2.00 | 0.75 | 0.045 | 0.030 | 25.00 | 20.00 | 1.00 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| TP304H | 205 | 515 | 40 | 183 |
| TP309H | 205 | 550 | 35 | 190 |
| TP309HCb | 205 | 550 | 30 | 190 |
| TP310H | 205 | 600 | 30 | 200 |
| TP310HCb | 205 | 600 | 25 | 200 |
Steel Grade
The steel grades TP304H, TP309H, TP309HCb, TP310H, and TP310HCb are classified under the austenitic stainless steel category. These grades are known for their high chromium and nickel content, which contribute to their excellent corrosion resistance and high-temperature strength.
Application
These stainless steel tubes and pipes are widely used in:
- Heat Exchangers: For transferring heat in various industrial processes.
- Boilers: In power generation and petrochemical industries.
- Pressure Vessels: For storing gases and liquids under pressure.
- Pipelines: For transporting fluids in harsh environments.
Possible Alternative Grades
While TP304H, TP309H, TP309HCb, TP310H, and TP310HCb are excellent choices for high-temperature applications, alternative grades may include:
- TP321: Offers better resistance to intergranular corrosion.
- TP347: Contains niobium for improved high-temperature stability.
- TP316: Provides enhanced corrosion resistance in marine environments.
These alternative grades may be selected based on specific application requirements and environmental conditions.
In conclusion, ASTM A999 TP304H, TP309H, TP309HCb, TP310H, and TP310HCb stainless steel tubes and pipes offer a robust solution for high-temperature and corrosive environments, making them essential materials in various industrial applications.
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.
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.
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