ASTM A333 Seamless Carbon Steel Pipe Heat Treatment For Low Temperature Service
ASTM A333 (ASME S/A-333) Pipe grades permit low temperature service. This specification covers nominal (average) walled pipe almost exclusively in seamless. A333 pipe is furnished to nine different grades designated by numbers 1, 3, 4, 6, 7, 8, 9, 10, & 11. Discussed herein are Grades 1 and 6.
1. Referenced Documents
ASTM A 370 Test Methods and Definitions for Mechanical testing of Steel Products
ASTM A999/A 999M Specification for General requirements for Alloy and Stainless Steel Pipe
ASTM A 671 Specification for General requirements for Alloy and Stainless Steel Pipe
ASTM E 23 Test Methods for Notched bar Impact testing of Metallic Materials
2. Available Size Range
| OD | Thickness |
| mm | inch | mm | SCH |
| 88.9~1422 | 3''~ 56'' | 2.11~140 | ≥SCH10 |
| *If the steel grades and size you are looking for are not listed above, please contact us for further information. |
3. Standards:
ASTM A333: Standard Specification for Seamless and Welded Steel Pipe for Low-Temperature Service
4. Application:
Oil, Gas and water delivery;
Refinery, Boiler and Mechanical equipment manufacture;
structure construction; drilling, ship building and etc.
5. Ordering Information
Quantity (feet, centimeters, or number of lengths),
Name of material (seamless pipe),
Grade (Gr.1, Gr.3, Gr.4, Gr.6, Gr.7, Gr.8, Gr.9, and Gr.10),
Size (NPS or outside diameter and schedule number of average wall thickness),
Lengths (specific or random),
End finish
Optional requirements
Test report required
6. Chemical Requirements
| Chemical Requirements |
| Element | Composition, % |
| Grade 1 | Grade 3 | Grade 4 | Grade 6 | Grade 7 | Grade 8 | Grade 9 | Grade 10 |
| Carbon (C) max | 0.3 | 0.19 | 0.12 | 0.3 | 0.19 | 0.13 | 0.2 | 0.2 |
| Manganese (Mn) | 0.40-1.06 | 0.31-0.64 | 0.50-1.05 | 0.29-1.06 | 0.90 max | 0.90 max | 0.40-1.06 | 1.15-1.50 |
| Phosphorus (P) max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.035 |
| Sulfur (S) max | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.025 | 0.015 |
| Silicon (Si) | … | 0.18-0.37 | 0.08-0.37 | 0.10 min | 0.13-0.32 | 0.13-0.32 | … | 0.10-0.35 |
| Nickel (Ni) | … | 0.47-0.98 | 0.47-0.98 | … | 2.03-2.57 | 8.40-9.60 | 1.60-2.24 | 0.25 max |
| Chromium (Cr) | … | 0.44-1.01 | 0.44-1.01 | … | … | … | … | 0.15 max |
| Copper (Cu) | … | 0.40-0.75 | 0.40-0.75 | … | … | … | 0.75-1.25 | 0.15 max |
| Aluminum (Al) | … | 0.04-0.30 | 0.04-0.30 | … | … | … | … | 0.06 max |
| Vanadium (V) max | … | … | … | … | … | … | … | 0.12 |
| Columbium (Cb)max | … | … | … | … | … | … | … | 0.05 |
| Molybdenum (Mo) max | … | … | … | … | … | … | … | 0.05 |
| Cobalt (Co) | … | … | … | … | … | … | … | … |
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. When Grade 6 is ordered under this specification, supplying an alloy grade that specifically requires the addition of any element other than those listed for the ordered grade is not permitted. However, the addition of elements required for the deoxidation of the steel is permitted.
7. Manufacturing Process
Raw Material Inspection → Cold Centering → Heating → Piercing & Rolling → SIzing → Heat Treatment → Testing → Finishing → NDE → Visual & Dimension Inspection → Marking → Storing & Shipping
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ASTM A333 Seamless Carbon Steel Pipe Heat Treatment For Low Temperature Service Images
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