ASTM A333 is the Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service.
ASTM A333 Grade 6 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
ASTM A333 Grade 10 covers seamless and welded steel pipe for low temperature service. The Grade 10 alloy steel involved is similar to AISI 4032 low alloy steel.
ASTM A333 Grade 7 Standard covers seamless and welded steel pipe for low temperature service.
ASTM A333 Grade 4 is the part of standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures.
Strike temperature condition：
|Crade||The lowest temperature for strike test|
|ASTM A333 Grade 1||-50||-45|
|ASTM A333 Grade 3||-150||-100|
|ASTM A333 Grade 4||-150||-100|
|ASTM A333 Grade 6||-50||-45|
|ASTM A333 Grade 7||-100||-75|
|ASTM A333 Grade 8||-320||-195|
|ASTM A333 Grade 9||-100||-75|
|ASTM A333 Grade 10||-75||-60|
Mechanical requiremnts of ASTM A333 alloy pipe
|Standard||Grade||Tensile Strength (MPa）||Yield Point (MPa)||Elongation (%)|
|ASTM A333||Grade 1||≥380||≥205||≥35||≥25|
Chemical Composition (%) of ASTM A333 steel pipe
|Standard||Grade||Chemical Composition (%)|
|ASTM A333||Grade 1||≤0.30||0.40-1.06||≤0.025||≤0.025|
ASTM A333 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation. All seamless and welded pipes shall be treated to control their microstructure.
Note 1: The dimensionless designator NPS (nominal pipe size) has been substituted in this standard for such traditional terms as “nominal diameter”, “size”, and “nominal size”.
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