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Mar 25, 2024
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What is ASTM A333 standard
ASTMA333, seamless steel pipe for cryogenic piping, suitable for -45℃～-195℃ grade cryogenic pressure vessel piping as well as seamless steel pipe for cryogenic heat exchanger piping.
The main grades are: ASTM A333-Grade1, Grade3, Grade4, Grade6, Grade7, Grade8, Grade9, Grade10, Grade11.
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
