1. Product Parameters
| Parameter | Specification |
|---|---|
| Standard | ASTM A335/A335M (ASME SA335 equivalent) |
| Carbon (C) | 0.05–0.15% |
| Chromium (Cr) | 1.00–1.50% |
| Molybdenum (Mo) | 0.44–0.62% |
| Tensile Strength | ≥415 MPa (min) |
| Yield Strength | ≥205 MPa (min) |
| Elongation | ≥30% |
| Hardness (HRB) | ≤92 |
| Max Operating Temp | 600°C (long-term) |
2. Material Advantages
High-Temperature Strength: Retains structural integrity at 600°C due to Cr-Mo synergy, with creep resistance 20% higher than carbon steels
Corrosion Resistance: Chromium oxide layer protects against H₂S and CO₂ corrosion, reducing maintenance costs in oil refineries
Weldability: Compatible with SMAW/GTAW using E8018-B2 filler metals, minimizing cracking risks
3. Market Prospects
Energy Sector: Expected 6% CAGR in power plants (2025–2030) for superheater tubes in ultra-supercritical boilers
Petrochemical Expansion: Demand driven by hydrocracker upgrades, with T11 replacing A106B in 40% of new projects
Nuclear Applications: Emerging use in secondary coolant pipes (PWRs) due to neutron absorption resistance
4. Key Applications
Power Plants: Steam headers and reheaters in coal-fired/waste-to-energy plants.
Oil Refineries: FCC regenerator liners and pyrolysis furnace tubes
Chemical Processing: Sulfuric acid plant heat exchangers
