Seamless steel pipe library: What material does ASTM A333Gr6 correspond to in China
Hit：262026-07-21 16:09:44
Seamless steel pipe library: What material does ASTM A333Gr6 correspond to in China
A333Gr6 belongs to carbon steel or low-alloy steel materials, and follows the ASTM A333/ASME SA333 standard. It is the corresponding American standard grade of 16MnDG in the domestic GB/T18984 standard. This material is produced through a normalizing heat treatment process to ensure good impact toughness and structural stability under low temperature conditions. A333Gr6 is a Grade 6 low-temperature seamless steel pipe in the American ASTM A333 standard, suitable for low temperature environments of -45 ℃, corresponding to the domestic grade 16MnDG.
Key performance parameters
Chemical composition: carbon content ≤ 0.30%, manganese content 0.29% -1.06%, silicon ≥ 0.10%, phosphorus and sulfur content ≤ 0.025%.
Mechanical properties: Tensile strength ≥ 415MPa, yield strength ≥ 240MPa, elongation ≥ 30%.
Low temperature impact: The minimum impact test temperature is -45 ℃, and the average impact energy is ≥ 18 joules, meeting the requirements for use in extremely cold environments.
This material is widely used in the fields of petrochemicals, natural gas processing, and cryogenic equipment manufacturing. It is commonly used to manufacture reactors, heat exchangers, separators, and low-temperature pressure vessel pipelines in an environment of -45 ℃. It is also a key pipe material selection in the LNG industry chain and polar oil and gas field development.
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