ASTM A312 TP304 TP309S TP310S TP316 Welded Steel Tube Welded Austenitic Stainless Steel Pipes for Fluid Engineering
Introduction
ASTM A312 is a standard specification for seamless and welded austenitic stainless steel pipes intended for high-temperature and general corrosive service. This article focuses on the specific grades TP304, TP309S, TP310S, and TP316, detailing their material properties, specifications, key features, chemical composition, mechanical properties, applications, and possible alternative grades.
Material and Specification
The ASTM A312 specification covers austenitic stainless steel pipes that are used in various fluid engineering applications. These pipes are characterized by their excellent corrosion resistance, high-temperature strength, and good mechanical properties.
Key Features
- Corrosion Resistance: Excellent resistance to a wide range of corrosive environments.
- High-Temperature Strength: Suitable for high-temperature applications.
- Weldability: Good weldability, allowing for easy fabrication.
- Versatility: Applicable in various industries, including chemical processing, oil and gas, and power generation.
Chemical Composition
| Grade | C (%) | Mn (%) | P (%) | S (%) | Si (%) | Cr (%) | Ni (%) | Mo (%) |
| TP304 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 18.00 | 8.00 | - |
| TP309S | 0.20 | 2.00 | 0.045 | 0.030 | 1.00 | 22.00 | 12.00 | - |
| TP310S | 0.25 | 2.00 | 0.045 | 0.030 | 1.00 | 25.00 | 20.00 | - |
| TP316 | 0.08 | 2.00 | 0.045 | 0.030 | 0.75 | 16.00 | 10.00 | 2.00 |
Mechanical Properties
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
| TP304 | 205 | 515-720 | 40 | 183 |
| TP309S | 205 | 515-720 | 40 | 183 |
| TP310S | 205 | 515-720 | 40 | 183 |
| TP316 | 205 | 515-720 | 40 | 183 |
Steel Grade
- TP304: General-purpose stainless steel with good corrosion resistance.
- TP309S: High-temperature resistant steel, suitable for applications in elevated temperatures.
- TP310S: Excellent high-temperature strength and oxidation resistance.
- TP316: Enhanced corrosion resistance, particularly against chlorides.
Application
These welded austenitic stainless steel pipes are widely used in:
- Chemical processing industries
- Oil and gas industries
- Power generation plants
- Food and beverage processing
- Pharmaceutical manufacturing
- Marine applications
Possible Alternative Grades
- TP321: Offers better resistance to high-temperature oxidation.
- TP347: Provides improved intergranular corrosion resistance.
- TP904L: Suitable for highly corrosive environments.
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.
