 |
Standard: ASTM A333/ASME SA333 Steel grade: Gr. 1, Gr. 3, Gr. 4, Gr. 6, Gr. 7, Gr. 8, Gr. 9, Gr. 10, Gr. 11 Size: 1” ~ 24” Application: For use at low temperatures. |
Chemical composition %:
|
Chemical composition % |
|||||||||
|
Grade |
1 |
3 |
4 |
6 |
7 |
8 |
9 |
10 |
11 |
|
C, max |
0.3 |
0.19 |
0.12 |
0.3 |
0.19 |
0.13 |
0.2 |
0.2 |
0.1 |
|
Mn |
0.40-1.06 |
0.31-0.64 |
0.5-1.05 |
0.29-1.06 |
0.9,max |
0.9,max |
0.4-1.06 |
1.15-1.5 |
0.6,max |
|
P, max |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.035 |
0.025 |
|
S ,max |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
0.025 |
|
Si |
... |
0.18-0.37 |
0.08-0.37 |
0.1,min |
0.13-0.32 |
0.13-0.32 |
... |
0.1-0.35 |
0.35,max |
|
Ni |
... |
3.18-3.82 |
0.47-0.98 |
... |
2.03-2.57 |
8.4-9.6 |
1.6-2.24 |
0.25,max |
35-37 |
|
Cr |
... |
... |
0.44-1.01 |
... |
... |
... |
... |
0.15,max |
0.5,max |
|
Cu |
... |
... |
0.4-0.75 |
... |
... |
... |
0.75-1.25 |
0.15,max |
... |
|
Al |
... |
... |
0.04-0.3 |
... |
... |
... |
... |
0.06,max |
... |
|
V, max |
... |
... |
... |
... |
... |
... |
... |
0.12 |
... |
|
Nb, max |
... |
... |
... |
... |
... |
... |
... |
0.05 |
... |
|
Mo, max |
... |
... |
... |
... |
... |
... |
... |
0.05 |
0.5,max |
|
Co |
... |
... |
... |
... |
... |
... |
... |
... |
0.5,max |
|
Mn |
0.40-1.06 |
0.31-0.64 |
0.5-1.05 |
0.29-1.06 |
0.9,max |
0.9,max |
0.4-1.06 |
1.15-1.5 |
0.6,max |
Mechanical properties:
|
Mechanical properties |
|||||||||
|
GRADE |
1 |
3 |
4 |
6 |
7 |
8 |
9 |
10 |
11 |
|
Tensile strength, min, Mpa |
380 |
450 |
415 |
415 |
450 |
690 |
435 |
550 |
450 |
|
Yield strength, min, Mpa |
205 |
240 |
240 |
240 |
240 |
515 |
315 |
450 |
240 |
|
Elongation, min, (s≥8mm) |
35% |
30% |
30% |
30% |
30% |
22% |
28% |
22% |
18% |
|
Elongation, min, (Standard circle) |
28% |
22% |
22% |
22% |
22% |
16% |
... |
16% |
... |
|
Elongation(s<8mm) Percentage reduction from basic each
reduction of 8mm of wall thickness |
1.75 |
1.5 |
1.5 |
1.5 |
1.5 |
1.25 |
1.5 |
1.25 |
|
Impact properties:
|
Impact properties |
size |
Minimum average gap of each the
three specimens (J) |
Minimum gap of each one specimens
(J) |
|
|
10×10 |
18 |
14 |
||
|
10×7.5 |
14 |
11 |
||
|
10×6.67 |
12 |
9 |
||
|
10×5 |
9 |
7 |
||
|
10×3.33 |
7 |
4 |
||
|
10×2.5 |
5 |
4 |