Low temperature Tube / Pipe
| Product | Low Temperature Pipe |
| Application | In Refineries, Power Plants, Boilers, Heat Exchangers, Condensers etc. |
| Pipe Standard | ASTM A333/ASME SA333 |
| Size | OD: 73-630mm |
| WT: 6-35mm | |
| Length: Single Random, Double Random, Cut Length |
1. 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 |
*For Grade 1 and 6, each reduction of 0.01% C below 0.30%, an increase of 0.05 % Mn above 1.06 % would be permitted to a max. of 1.35%.
*For Grade 6, the limit for columbium may be increased up to 0.05 % on heat analysis and 0.06 % on product analysis.
*Generally, the carbon equivalent C.E = [C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15] shall not exceed 0.43% by heat analysis.
2. ASTM A333 Mechanical Properties
| 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 | ... |
*The elongation values are furnished on the basis of standard round 2 inch or 50 mm(or 4D) specimens.
*Elongation of Grade 11 is for all walls and small sizes tested in full section.
