1. Product Parameters (Table Format)
| Parameter | Specification | Standard |
|---|---|---|
| Chemical Composition | C: ≤0.15%, Cr: 2.00–2.50%, Mo: 0.45–0.65%, Mn: 0.40–0.70 | GB/T 5310-20171 |
| Mechanical Properties | Tensile Strength: ≥450 MPa, Yield Strength: ≥280 MPa, Elongation: ≥20% | ASTM A2101 |
| Heat Treatment | Normalized (900–930℃) + Tempered (680–730℃) | ASME SA-3351 |
| Size Range | OD: 10–530mm, WT: 2.0–70mm (Hot-Rolled/Cold-Drawn) | JIS G34621 |
2. Key Applications
Power Plants: Superheater/Reheater tubes for ultra-supercritical boilers (≤620℃, >25MPa)
Petrochemicals: High-pressure pipelines resistant to H₂S and oxidative acids (e.g., nitric acid)
Nuclear Systems: Heat exchanger tubes in reactor cooling systems
3. Advantages
High-Temperature Stability: Superior creep strength at 550–620℃ compared to 12Cr1MoVG
Corrosion Resistance: Chromium-molybdenum alloying enhances resistance to oxidation and acid corrosion
Mechanical Performance: Balanced toughness and cold formability for complex pipe fittings
