ASTM A333 - Seamless and Welded Steel Pipe for Low Temperature Service
Chemical Compositions, max ,%
Grade |
C |
Mn |
P |
S |
Si |
Ni |
Cr |
Cu |
Al |
V |
Nb |
Mo |
Co |
1 (Note) |
0.30 |
0.40-1.06 |
0.025 |
0.025 |
… |
… |
… |
… |
… |
… |
… |
… |
… |
3 |
0.19 |
0.31-0.64 |
0.025 |
0.025 |
0.18-0.37 |
3.18-3.82 |
… |
… |
… |
… |
… |
… |
… |
4 |
0.12 |
0.50-1.05 |
0.025 |
0.025 |
0.08-0.37 |
0.47-0.98 |
0.44-1.01 |
0.40-0.75 |
0.04-0.30 |
… |
… |
… |
… |
6 (Note) |
0.30 |
0.29-1.06 |
0.025 |
0.025 |
≥0.10 |
… |
… |
… |
… |
… |
… |
… |
… |
7 |
0.19 |
0.90 |
0.025 |
0.025 |
0.13-0.32 |
2.03-2.57 |
… |
… |
… |
… |
… |
… |
… |
8 |
0.13 |
0.90 |
0.025 |
0.025 |
0.13-0.32 |
8.40-9.60 |
… |
… |
… |
… |
… |
… |
… |
9 |
0.20 |
0.40-1.06 |
0.025 |
0.025 |
… |
1.60-2.24 |
… |
0.75-1.25 |
… |
… |
… |
… |
… |
10 |
0.20 |
1.15-1.50 |
0.025 |
0.025 |
0.10-0.35 |
0.25 |
0.15 |
0.15 |
0.06 |
0.12 |
0.05 |
0.05 |
… |
11 |
0.10 |
0.60 |
0.025 |
0.025 |
0.35 |
35.0-37.0 |
0.50 |
… |
… |
… |
… |
0.05 |
0.05 |
Note: 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.
Tensile Requirements
Grade |
Tensile strength, min, psi [MPa] |
Yield strength, min, psi [MPa] |
Elongation in 2 in. [50 mm], min, %: |
Longitudinal |
Transverse |
1 |
55 000 [380] |
30 000 [205] |
35 |
25 |
3 |
65 000 [450] |
35 000 [240] |
30 |
20 |
4 |
60 000 [415] |
35 000 [240] |
30 |
16.5 |
6 |
60 000 [415] |
35 000 [240] |
30 |
16.5 |
7 |
65 000 [450] |
35 000 [240] |
30 |
22 |
8 |
100 0000 [690] |
75 000 [515] |
22 |
… |
9 |
63 000 [435] |
46 000 [315] |
28 |
… |
10 |
80 000 [550] |
65 000 [450] |
22 |
… |
11 |
65 000 [450] |
35 000 [240] |
18 (Note) |
… |
Note: Elongation of Grade 11 is for all walls and small sizes tested in full section.
Impact Requirements
Minimum Impact Test Temperature
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 |
Impact Requirements for Grades 1, 3, 4, 6, 7, 9, and 10
Size of Specimen, mm |
Minimum Average Notched Bar Impact Value of Each Set of Three Specimens |
Minimum Notched Bar Impact Value of One Specimen Only of a Set |
ft·lbf |
J |
ft·lbf |
J |
10 × 10 |
13 |
18 |
10 |
14 |
10 × 7.5 |
10 |
14 |
8 |
11 |
10 × 6.6 |
7 |
12 |
7 |
9 |
10 × 5 |
7 |
9 |
5 |
7 |
10 ×3.33 |
5 |
7 |
3 |
4 |
10 × 2.5 |
4 |
5 |
3 |
4 |
|