Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

ASTM A 333 GR.6 steel pipe


ASTM A333 Gr 6

Seamless and Welded Steel Pipe for Low-Temperature Service
 

GRADE

Grade 1, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11

 
ASTM A333 A333 GR6 steel pipe for low pressure vessel pipe heat exchanger pipeline
low temperature Apply to-45 °C ~ 195 °C level-low temperature and

Chemical Requirements

  Composition, %  
Element Grade 1 Grade 3 Grade 6
Carbon, max 0.30 0.19 0.30
Manganese 0.40 - 1.06 0.31 - 0.64 0.29 - 1.06
Phosphorous, max 0.025 0.025 0.025
Sulfur, max 0.025 0.025 0.025
Silicon 0.18 -0.37 0.10 min
Nickel 3.18 - 3.82  

ASTM A333 GR.6 steel pipe

ASTM A333 GR.6 PIPE

For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.

When Grade 6 is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade is not permitted. However, the addition of elements required for the deoxidation of the steel is permitted.

 
    Grade 1 Grade 3 Grade 6
    psi MPa psi MPa psi MPa
Tensile Strength, min 55,000 380 65,000 450 60,000 415
Yield Strength, min 30,000 205 35,000 240 35,000 240
    Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse
Elongation in 2 in. or 50 mm, (or 4D), min, %:      

Basic minimum elongation for walls 5/16 in. [8 mm]
and over in thickness, strip tests, and for all

small sizes tested in full section

35 35 30 20 30 16.5
When the standard round 2-in. or 50-mm gage length
or proportionally smaller size test specimen with the
gage length equal to 4D (4 times the diameter) is used
28 20 22 14 22 12

For strip tests, a deduction for each 1/32in. [0.8 mm]

decrease in wall thickness below 5/16 in. [8 mm] from

the basic minimum elongation of the following percentage

1.75 1.25 1.50 1.00 1.50 1.00
               
  Elongation in 2 in. or 50 mm, min, %:

 

Wall Thickness Grade 1 Grade 3 Grade 6
in. mm Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse
5/16 (0.312) 8 35 25 30 20 30 16
9/32 (.281) 7.2 33 24 28 19 28 15
1/4 (.250) 6.4 32 23 27 18 27 15
7/32 (.219) 5.6 30   26   26  
3/16 (.188) 4.8 28   24   24  
5/32 (.156) 4 26   22   22  
1/8 (.125) 3.2 25   21   21  
3/32 (.094) 2.4 23   20   20  
1/16 (.063) 1.6 21   18   18

 

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