ASTM A333 Grade 1, 3, 4, 6, 7 Seamless Precision Steel Tube for Low-Temperature Service
Introduction
ASTM A333 is a specification that covers seamless and welded steel pipe for low-temperature service. The grades included in this specification are designed to provide excellent mechanical properties and impact toughness at low temperatures, making them suitable for various applications in the oil and gas industry, as well as in cryogenic services.
Material
The materials used in the production of ASTM A333 seamless precision steel tubes are carbon and alloy steels. These materials are selected for their ability to withstand low temperatures while maintaining structural integrity.
Specification
ASTM A333 is divided into several grades, each with specific requirements regarding chemical composition and mechanical properties. The grades covered under this specification include:
- Grade 1
- Grade 3
- Grade 4
- Grade 6
- Grade 7
Chemical Composition
The following table presents the chemical composition requirements for ASTM A333 Grades 1, 3, 4, 6, and 7:
| Grade | Carbon (C) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) |
| 1 | ≤ 0.18 | 0.30 - 0.90 | ≤ 0.025 | ≤ 0.025 | - | - | - |
| 3 | ≤ 0.18 | 0.30 - 0.90 | ≤ 0.025 | ≤ 0.025 | 0.40 - 0.70 | - | - |
| 4 | ≤ 0.20 | 0.30 - 0.90 | ≤ 0.025 | ≤ 0.025 | 0.40 - 0.70 | 0.40 - 0.60 | - |
| 6 | ≤ 0.20 | 0.30 - 0.90 | ≤ 0.025 | ≤ 0.025 | 0.40 - 0.70 | 0.40 - 0.60 | 0.15 - 0.25 |
| 7 | ≤ 0.20 | 0.30 - 0.90 | ≤ 0.025 | ≤ 0.025 | 0.40 - 0.70 | 0.40 - 0.60 | 0.15 - 0.25 |
Mechanical Properties
The mechanical properties of ASTM A333 seamless precision steel tubes are crucial for their performance in low-temperature environments. The following table summarizes the mechanical properties for each grade:
| Grade | Yield Strength (min) | Tensile Strength (min) | Elongation (min) | Impact Test (min) |
| 1 | 205 MPa (30 ksi) | 310 MPa (45 ksi) | 30% | - |
| 3 | 205 MPa (30 ksi) | 310 MPa (45 ksi) | 30% | - |
| 4 | 240 MPa (35 ksi) | 415 MPa (60 ksi) | 30% | - |
| 6 | 240 MPa (35 ksi) | 415 MPa (60 ksi) | 30% | 27 J (20 ft-lb) |
| 7 | 240 MPa (35 ksi) | 415 MPa (60 ksi) | 30% | 27 J (20 ft-lb) |
Application
ASTM A333 seamless precision steel tubes are widely used in various applications, particularly in industries that require materials capable of performing under low-temperature conditions. Some common applications include:
- Oil and Gas Pipelines: Transporting natural gas and oil at low temperatures.
- Cryogenic Equipment: Used in the storage and transportation of liquefied gases.
- Pressure Vessels: For low-temperature service in chemical processing.
- Heat Exchangers: In refrigeration and air conditioning systems.
Conclusion
ASTM A333 Grades 1, 3, 4, 6, and 7 seamless precision steel tubes are essential materials for low-temperature applications. Their specific chemical compositions and mechanical properties ensure reliability and safety in demanding environments, making them a preferred choice in various industrial sectors.
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trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
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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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ASTM A333 Grade 1 Seamless Precision Steel Tube For Low-Temperature Service Images
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