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ASTM A333 steel pipe
ASTM A333 alloy steel pipe
ASTM A333 steel pipes
ASTM A333 pipe
ASTM A333 steel pipe
ASTM A333 alloy steel pipe
ASTM A333 steel pipes
ASTM A333 pipe

ASTM A333 STEEL PIPE

ASTM A333 is the standard specification for seamless and welded carbon and alloy steel pipe for low temperature service or other applications requiring notch toughness. There are several grades of ferritic steel covered by this standard: Grade, Grade 3, Grade 4, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10 and Grade 11.
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Product Introduction

ASTM A333 standard covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures. 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. Tensile tests, impact tests, hydrostatic tests, and nondestructive electric tests shall be made in accordance to specified requirements. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.

ASTM A333 steel pipe production includes a series of visual surface imperfections to guarantee that they have been properly manufactured. ASTM A333 steel  pipe shall be subject to rejection if surface imperfections acceptable are not scattered, but appear over a large area in excess of what is considered a workmanlike finish. The finished pipe shall be reasonably straight.

Technical data

 

1. ASTM A333 Chemical Composition Requirements

 

Chemical Composition of ASTM A333
Element Grade 1, % Grade 3, % Grade 4, % Grade 6, % Grade 7, % Grade 8, % Grade 9, % Grade 10, % Grade 11, %
C 0.30 0.19 0.12 0.30 0.19 0.13 0.20 0.20 0.10
Mn 0.40–1.06 0.31–0.64 0.50–1.05 0.29–1.06 0.90 0.90 0.40–1.06 1.15–1.50 0.60
P 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.035 0.025
S 0.025 0.025 0.025 0.025 0.025 0.025 0.025 0.015 0.025
Si ... 0.18–0.37 0.08–0.37 0.10 min 0.13–0.32 0.13–0.32 ... 0.10–0.35 0.35
Ni ... 3.18–3.82 0.47–0.98 0.40 2.03–2.57 8.40–9.60 1.60–2.24 0.25 35.0–37.0
Cr ... ... 0.44–1.01 0.30 ... ... ... 0.15 0.50
Cu ... ... 0.40–0.75 0.40 ... ... 0.75–1.25 0.15 ...
Al ... ... 0.04–0.30 ... ... ... ... 0.06 ...
V ... ... ... 0.08 ... ... ... 0.12 ...
Cb ... ... ... 0.02 ... ... ... 0.05 ...
Mo ... ... ... 0.12 ... ... ... 0.05 0.50
Co ... ... ... ... ... ... ... ... 0.50
*For Grade 1 and 6, each reduction of 0.01% C below 0.30%, an increase of 0.05 % Mn above 1.06 % would be permitted to a max. of 1.35%.
*For Grade 6, the limit for columbium may be increased up to 0.05 % on heat analysis and 0.06 % on product analysis.
*Generally, the carbon equivalent C.E = [C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15] shall not exceed 0.43% by heat analysis.

 

2. ASTM A333 Mechanical Properties

 

ASTM A333 Tensile Strength, min. Yield Strength, min. Elongation %, min.
Grade psi MPa psi MPa Longitudinal Transverse
Grade 1 55 000 380 30 000 205 35 25
Grade 3 65 000 450 35 000 240 30 20
Grade 4 60 000 415 35 000 240 30 16.5
Grade 6 60 000 415 35 000 240 30 16.5
Grade 7 65 000 450 35 000 240 30 22
Grade 8 100 000 690 75 000 515 22 ...
Grade 9 63 000 435 46 000 315 28 ...
Grade 10 80 000 550 65 000 450 22 ...
Grade 11 65 000 450 35 000 240 18 ...
*The elongation values are furnished on the basis of standard round  2 inch or 50 mm(or 4D) specimens.
*Elongation of Grade 11 is for all walls and small sizes tested in full section.

 

3.  Charpy V-notch Impact Tests

 

Impact Requirements for Grades 1, 3, 4, 6, 7, 9, 10, and 11
Size of Specimen *A *B
mm ft·lbf J ft·lbf J
10 by 10 13 18 10 14
10 by 7.5 10 14 8 11
10 by 6.67 9 12 7 9
10 by 5 7 9 5 7
10 by 3.33 5 7 3 4
10 by 2.5 4 5 3 4
*A denotes minimum average notched bar impact value of each set of three specimens.
*B denotes minimum notched bar impact value of one specimen only of a set.

 

 

Minimum Impact Test Temperature of ASTM A333
Grade °F °C
1 -50 -45
3 -150 -100
4 -150 -100
6 -50 -45
7 -100 -75
8 -320 -195
9 -100 -75
10 -75 -60
11 -320 -195

* Impact tests specified for temperatures lower than 70 °F [20 °C] should be made with precautions.

4.  Tensile Requirements

The material shall conform to the requirements as proscribed:

    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 25 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  

5.  Impact Requirements

For Grades 1, 3 and 6, the notched-bar impact properties of each set of three impact specimens, including specimens for the welded joint in welded pipe with wall thicknesses of 0.120 in. [3 mm] and larger, shall not be less than the values prescribed:

Size of Specimen, min Minimum Average Notched Bar Impact Value of Each Set of Three Specimens Minimum Notched Bar Impact Value of One Specimen Only of a Set   Impact Temperature
  ft-lbf J ft-lbf J   Grade Min Impact
Test Temp
10 by 10 13 18 10 14     F C
10 by 7.5 10 14 8 11   1 -50 -45
10 by 6.67 9 12 7 9   3 -150 -100
10 by 5 7 9 5 7   6 -50 -45
10 by 3.33 5 7 3 4        
10 by 2.5 4 5 3 4        

6.  Mechanical Testing

Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot. For small lots, at least one pipe shall be tested. For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to constitute 5% of the lot, but in no case less than 2 pipe. Hydrostatic Test Impact Test One notched bar impact test, consisting of breaking three specimens shall be made from each heat represented in a heat-treatment load on specimens taken from the finished pipe.









 
Standard

ASTM A606 Type 4 Equivalent steel standards:

GNEE steel supplies ASTM A333 and equivalent low temperature welded steel pipe and seamless steel pipes in good quality, if you are interested in buying fine fluid pipe from reliable steel mills, please send an email now!
 











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