A333 Gr.6 is a specification for low-temperature carbon steel seamless pipes used in various applications, including industrial and commercial applications, as well as in the oil and gas industry. The "A" in A333 stands for the American Society for Testing and Materials (ASTM), while the "333" represents the grade of steel used in the specification.
The Gr.6 in A333 Gr.6 represents the grade of steel used in the specification. This particular grade of steel has a low carbon content, making it ideal for use in low-temperature environments. It also contains small amounts of other elements, such as manganese and silicon, to improve its strength and toughness.
The seamless steel pipe produced according to A333 Gr.6 specification is made by piercing a solid billet of steel to create a hollow tube. The seamless construction provides higher strength and durability compared to welded pipes. These seamless pipes are used in a variety of applications, including oil and gas transmission, chemical processing, and power generation. A333 Gr.6 seamless steel pipes are also used in low-temperature service applications, such as cryogenic and refrigeration services.
Referenced Documents
ASTM A333 Grade 6 Chemical Compositions(%)
| Compositions | Data |
| Carbon(max.) | 0.30 |
| Manganese | 0.29-1.06 |
| Phosphorus(max.) | 0.025 |
| Sulfur(max.) | 0.025 |
| Silicon | … |
| Nickel | … |
| Chromium | … |
| Other Elements | … |
Mechanical properties for ASTM A333 Grade 6 Alloy Steel
| Properties | Data |
| Tensile strength, min, (MPa) | 415 Mpa |
| Yield strength, min, (MPa) | 240 Mpa |
| Elongation, min, (%), L/T | 30/16.5 |
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