ASTM A333  
 

 

 
 

ASTM A333 Grade 6, Seamless Steel Pipe for Low-Temperature Service

 
 
ASTM A333 Standard covers seamless and welded steel pipe for low temperature service. The Grade 6 steel involved is similar to AISI 4032 low alloy steel. ASTM A333 Grade 6 pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.

Seamless and Welded Steel Pipe size for Low-Temperature Service:

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness:2.0mm – 14 mm
  • Length: max 16000mm
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
 
     
 

Chemical requirement Composition(%)

 Composition ASTM A333 Grade 6
Carbon, max 0.30
Manganese 0.29–1.06
Phosphorus, max 0.025
Sulfur, max 0.025
 
     
 

TENSILE REQUIREMENTS

 Data
ASTM A333 Grade 6
Tensile strength, min, psi (MPa)
60 000 (415)
Yield strength, min, psi (MPa)
35 000 (240)
 
     
 

Impact temperature

Minimum Impact Test Temperature -45 C(-50 F)

 
     
   
     
 

ASTM A333 Grade 3, Seamless Pipe for Low-Temperature Service

 
 
ASTM A333 Grade 3 is the part of standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. ASTM A333 Grade 3 alloy pipe shall be made by the seamless or welding process with the addition of no filler metal in the welding operation.

Seamless and Welded Steel Pipe size for Low-Temperature Service:

  • Outer Dimensions: 19.05mm – 114.3mm
  • Wall Thickness:2.0mm – 14 mm
  • Length: max 16000mm
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
 
     
 

ASTM A333 Grade 3 Chemical Compositions(%)

Grade Chemical Composition (%)
C(max) Si Mn P(max) S(max) Cr Ni Cu Mo V Al
Grade 3 0.19 0.18-0.37 0.31-0.64 0.025 0.025 3.18-3.82  / /  /  /
 
     
 

ASTM A333 Grade 3 Mechanical Properties

Grade Tensile Strength (MPa) Yield Point (MPa) Elongation (%)
Y X
ASTM A333 Grade 3 ≥450 ≥240 ≥30 ≥20
 
     
 

Strike Temperature Condition

Crade The lowest temperature for strike test
ASTM A333 Grade 3 -150 -100
 
     
     
     
     
     
 
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