Seamless Tube Library: ASTM A333-1.6 Chemical Composition and Mechanical Properties
Hit：112026-06-02 09:51:01
Seamless Tube Library: ASTM A333-1.6 Chemical Composition and Mechanical Properties
A333-1.6 is the Gr.6 grade in ASTM A333 standard, and its chemical composition and mechanical properties meet the following standard requirements:
Chemical composition requirements (mass fraction percentage)
Element content requirements
C (carbon) ≤ 0.30%
Mn (manganese) 0.29-1.06%
P (phosphorus) ≤ 0.025%
S (sulfur) ≤ 0.025%
Si (silicon) ≥ 0.10%
A333Gr. 6 belongs to nickel free aluminum deoxidized fine grain low-temperature toughness steel, and its composition design focuses on ensuring low-temperature toughness.
Mechanical performance requirements
table
Performance index standard requirements
Tensile strength ≥ 415MPa
Yield strength ≥ 240MPa
Elongation rate ≥ 30%
Minimum average gap impact value ≥ 18J
Minimum impact test temperature -45 ℃
This performance standard is specifically designed for low-temperature operation scenarios and can withstand impact loads at temperatures of -45 ℃ or even lower, ensuring the safe operation of pipelines.
A333-1.6 seamless steel pipe is mainly used in low-temperature engineering fields such as low-temperature pressure vessels, low-temperature heat exchanger pipelines, and LNG transportation.
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