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Alloy steel pipe & tube

The benefits of alloy steel pipe include its tensile strength, yield strength, fatigue resistance, toughness, and wear resistance.

ASTM A333 Low Temperature Pipe

ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service. This specification covers nominal (average) walled pipe almost exclusively in seamless.

Several grades of ferritic steel are included. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse effect on low-temperature impact properties.

Main ASTM A333 alloy pipes/tubes

ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service.

ASTM A335 P11 alloy pipe
ASTM A333 Gr.1 pipe
ASTM A333 Grade 1 alloy pipe shall be made by the seamless or welding process...
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.
A333 Gr.6 seamless pipe
ASTM A333 Grade 6 covers seamless and welded steel pipe for low temperature service.
ASTM A333 Grade 10 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.
ASTM A333 Gr.10 pipe
ASTM A333 Grade 10 covers seamless and welded steel pipe for low temperature service.
ASTM A213 T91 Seamless alloy pipes
ASTM A333 Grade 3 Pipe
ASMT A333 Grade 3 seamless and welded pipes shall be treated to control their microstructure.
ASTM A333 Grade 9 Seamless Pipe
ASTM A333 Grade 9
ASMT A333 Grade 9 seamless and welded pipes shall be treated to control their microstructure.
ASTM A213 T91 Seamless alloy pipes
ASTM A333 Grade 7 Pipe
ASMT A333 Grade 7 seamless and welded pipes shall be treated to control their microstructure.

A333 pipe is furnished to nine different grades designated by numbers 1, 3, 4, 6, 7, 8, 9, 10, & 11. Discussed herein are Grades 1 and 6.

Sunny Steel Supply supplies a full range of ASTM A333 (ASME S/A 333)

Grades: ASTM A333 Grade 1 and Grade 6

Sizes

Strike temperature condition:
Crade The lowest temperature for strike test
ASTM A333 Grade 1 -50 -45
ASTM A333 Grade 6 -50 -45
 Mechanical requiremnts of ASTM A333 alloy pipe
Grade Tensile Strength (MPa) Yield Point (MPa) Elongation (%)
Y X
Grade 1 ≥380 ≥205 ≥35 ≥25
Grade 6 ≥415 ≥240 ≥30 ≥16.5
 Chemical Composition (%) of ASTM A333 steel pipe
Grade Chemical Composition (%)
C Si Mn P S
Grade 1 ≤0.30 0.40-1.06 ≤0.025 ≤0.025
Grade 6 ≤0.30 ≥0.10 0.29-1.06 ≤0.025 ≤0.025
Heat Treatment:

Grades 1 and 6 shall be heat treated to control their microstructure.
ASTM A333 Grade 6 and ASME SA 333 Grade 6 are heat treated to achieve normalized condition @ 920 degrees Celsius with controlled microstructure.

Specific Impact requirements

The raw material used for low temperature service pipe is ALUMINIUM killed with high proportion of manganese (more than 1%) combined with low proportions of carbon (less than 0.23%).For low temperature pipe to be certified as LTCS additional impact test should be conducted at low temperatures, as per mandatory requirements in section 8 of ASTM A 333.



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