Metal Tubular Products ASME S/A-333 (ASTM A333) Low temperature service is permitted by pipe grades. This specification mostly applies to seamless nominal (average) walled pipe. There are different ferritic steel grades mentioned. Because thicker walls have a negative impact on low-temperature impact qualities, some product sizes might not be offered under this specification. The nine various classes of A333 pipe are identified by the numerals 1, 3, 4, 6, 7, 8, 9, 10, and 11. Grades 1 and 6 are covered in this article.
The Seamless and Welded Steel Pipe for Low-Temperature Service and Other Applications with Required Notch Toughness in NPS 1/8 to NPS 48 (DN 6 to DN 1200) Standard Specification is ASTM A333.
Available for Immediate Supply: ASME SA333 Grade 6 CS Seamless Pipes, ASTM A333 Low Temperature Tubes Up to 24" Buy Exports are our area of expertise. High Quality ASTM A333 Grade 6, Low Temperature Tubes With Mill Certification! Nominal (average) wall seamless and welded carbon and alloy steel pipe designed for usage at low temperatures is covered by ASTM A333. There are different ferritic steel grades mentioned. Because thicker walls have a negative impact on low-temperature impact qualities, some product sizes might not be offered under this specification.
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Chemical Composition of A333 Grade 6 Carbon Steel Seamless Tubes Pipes
| Element | Grade 1 | Grade 3 | Grade 6 |
| Carbon, max | 0.30 | 0.19 | 0.30 |
| Manganese | 0.40 – 1.06 | 0.31 – 0.64 | 0.29 – 1.06 |
| Phosphorous, max | 0.025 | 0.025 | 0.025 |
| Sulfur, max | 0.025 | 0.025 | 0.025 |
| Silicon | null | 0.18 -0.37 | 0.10 min |
| Nickel | null | 3.18 – 3.82 | null |
Mechanical Properties of A333 Grade 6 Carbon Steel Seamless Tubes Pipes
| 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 | – |
Advantages of A333 Grade 6 Carbon Steel Seamless Tubes Pipes
- Good general corrosion resistance and high strength
- Good sulfide stress corrosion resistance
- Resistance to chloride pitting and crevice corrosion
- Higher resistance to chloride stress corrosion cracking
- Easy to weld and conform
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