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ASTM A333 Gr. 1 Gr.3 Gr.4 Gr.6 Gr.7 alloy steel pipe for low temperture service
Item: ASTM A333 Alloy Steel Pipe
ASTM A333 alloy steel pipes are applicated for low temperature service.
Specification:
Grade | C ≤ | Mn | P ≤ | S ≤ | Si | Ni | Cr | Cu | Al | Other Elements |
A333 Gr.1 | 0.30 | 0.40-1.06 | 0.025 | 0.025 | -- | -- | -- | -- | -- | -- |
A333 Gr.3 | 0.19 | 0.31-0.64 | 0.025 | 0.025 | 0.18-0.37 | 3.18-3.82 | -- | -- | -- | -- |
A333 Gr.4 | 0.12 | 0.50-1.05 | 0.025 | 0.025 | 0.18-0.37 | 0.47-0.98 | 0.44-1.01 | 0.40-0.75 | 0.04-0.30 | -- |
A333 Gr.6 | 0.30 | 0.29-1.06 | 0.025 | 0.025 | ≥0.10 | -- | -- | -- | -- | -- |
A333 Gr.7 | 0.19 | ≤0.90 | 0.025 | 0.025 | 0.13-0.32 | 2.03-2.57 | -- | -- | -- | -- |
Mechanical properties for ASTM A333 Gr. 1 Gr.3 Gr.4 Gr.6 Gr.7 Alloy Steel
Steel Grade | Tensile strength, min, (MPa) | Yield strength, min, (MPa) | Elongation, min, (%), L/T |
A333 Gr.1 | 380 Mpa | 205 Mpa | 35/25 |
A333 Gr.3 | 450 Mpa | 240 Mpa | 30/20 |
A333 Gr.4 | 415 Mpa | 240 Mpa | 30/16.5 |
A333 Gr.6 | 415 Mpa | 240 Mpa | 30/16.5 |
A333 Gr.7 | 450 Mpa | 240 Mpa | 30/22 |
Impact Temperature
Steel Grade | Minimum Impact Test Temperature | |
°F | °C | |
A333 Gr.1 | -50 | -45 |
A333 Gr.3 | -150 | -100 |
A333 Gr.4 | -150 | -100 |
A333 Gr.6 | -50 | -45 |
A333 Gr.7 | -100 | -75 |

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