| Customization: | Available |
|---|---|
| Application: | Cast Iron, Chemical Processing, Construction, Oil and Gas, Water Supply, Building Material |
| Pipe Diameter: | 1/8"-5" |
|
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| Category | Details |
|---|---|
| Standard | ASTM A333 - Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service. |
| Material Type | Seamless Carbon Steel |
| Grades | Grade 6 (Carbon Steel) - Other grades (e.g., 3, 4, 7, 8, 9, 10, 11) are alloy steels. |
| Chemical Composition | Grade 6: - Carbon (C): ≤0.30% - Manganese (Mn): 0.29-1.06% - Phosphorus (P): ≤0.025% - Sulfur (S): ≤0.025% - Silicon (Si): ≥0.10% |
| Mechanical Properties | - Tensile Strength: ≥415 MPa (60,200 psi) - Yield Strength: ≥240 MPa (35,000 psi) - Elongation (%): ≥30% (50 mm gauge length) |
| Impact Testing | Charpy V-Notch Test required at -45°F (-43°C) for Grade 6 to ensure low-temperature toughness. |
| Manufacturing Process | - Welded via ERW or SAW. - Heat treatment (normalizing or stress-relieving) may be applied post-welding. |
| Testing Requirements | - Hydrostatic Test: Mandatory. - Non-Destructive Testing (NDT): Radiography or ultrasonic testing. - Flattening Test for welded seams. |
| Temperature Range | Designed for low-temperature service (down to -45°F/-43°C for Grade 6). |
| Key Applications | - Cryogenic fluid transport (LNG, liquid nitrogen) - Refrigeration systems - Cold storage plants - Petrochemical low-temperature pipelines. |
Advantages |
- Excellent low-temperature toughness. - Compliance with stringent impact testing. - Suitable for harsh sub-zero environments. |
Low-Temperature Service:
Designed for cryogenic applications, operating in temperatures as low as -45°C (-50°F) to +345°C (650°F).
Grades include Gr.1, Gr.3, Gr.6, Gr.8, Gr.9, Gr.11, optimized for specific temperature ranges.
Material Composition:
Gr.6 (C-Mn-Si Steel): Low carbon content (≤0.30%), enhanced with manganese and silicon for improved toughness.
Gr.9 (3.5% Nickel Steel): Nickel alloyed for superior low-temperature ductility.
Mechanical Properties:
Tensile Strength: 380-550 MPa (Gr.6) | 485-655 MPa (Gr.9).
Yield Strength: ≥205 MPa (Gr.6) | ≥275 MPa (Gr.9).
Impact Test: Charpy V-notch tested at -45°C to ensure fracture resistance.
Manufacturing & Testing:
Heat Treatment: Normalized or normalized + tempered for stress relief.
Non-Destructive Testing (NDT): 100% ultrasonic testing (UT) or eddy current inspection.
Hydrostatic Testing: Optional per customer requirements.
Applications:
Cryogenic fluid transport (LNG, liquid nitrogen/oxygen).
Refrigeration systems, petrochemical plants, and offshore platforms.
Power generation equipment exposed to sub-zero environments.
Sizes: 1/8" to 24" NPS (Nominal Pipe Size).
Wall Thickness: Schedule 10 to XXS (per ASME B36.10).
Ends: Plain, beveled, threaded, or grooved (as requested).
Mill Test Certificate (MTC) compliant with EN 10204 3.1/3.2.
Traceability via heat number and material batch records.
Precision cutting, coating (anti-corrosion), and custom length customization.
Technical support for material selection and welding procedures.
|
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 |
|
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 |
... |
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