ASTM A213 T9 tubes are crafted from a chromium-molybdenum (Cr-Mo) alloy steel, engineered for exceptional heat resistance and structural stability in high-temperature heat exchange systems. Their chemical composition adheres strictly to ASTM standards:
Element | Content Range | Function |
Carbon (C) | 0.15-0.25% | Enhances high-temperature strength |
Chromium (Cr) | 8.00-10.00% | Improves oxidation and corrosion resistance |
Molybdenum (Mo) | 0.90-1.10% | Boosts creep resistance at elevated temps |
Manganese (Mn) | ≤0.60% | Aids in grain refinement |
Silicon (Si) | ≤0.50% | Enhances oxidation resistance |
Phosphorus (P) | ≤0.025% | Minimized to prevent brittleness |
Sulfur (S) | ≤0.025% | Controlled to reduce corrosion risk |
Designed for extreme thermal stress, these tubes deliver superior mechanical performance in high-heat environments:
For global project compatibility, ASTM A213 T9 aligns with these international equivalents:
Our ASTM A213 T9 tubes undergo precision manufacturing to ensure reliability:
- Seamless Production: Hot-rolled from alloy billets, ensuring uniform wall thickness and no weak seams.
- Solution Annealing: Heat-treated at 900-980°C to optimize grain structure and enhance creep resistance.
- Cold Finishing: Optional cold drawing for tight dimensional tolerances (±0.3% on diameter).
- Quality Validation: 100% ultrasonic testing, eddy current inspection, and hydrostatic pressure testing (at 30% above design pressure).
Perfect for high-temperature heat exchange systems in:
- Petrochemical Industry: Refinery heat exchangers, reformers, and hydrocrackers.
- Power Generation: Boiler superheaters, reheaters, and turbine cooling systems.
- Chemical Processing: High-temperature reactors and process heat exchangers.
- Extreme Temp Resistance: Maintains strength at up to 650°C, outperforming standard carbon steel tubes.
- Creep Resistance: Cr-Mo alloy minimizes deformation under long-term high-temperature stress.
- Corrosion Resistance: Chromium content resists oxidation and chemical attack in harsh environments.
- Seamless Reliability: Eliminates leak risks, critical for high-pressure heat exchange applications.
Q1: Can these tubes be customized for specific lengths or wall thicknesses?
A: Yes, we offer diameters from 12mm to 168mm, wall thicknesses from 1.5mm to 12mm, and cut-to-length options (1-12m) with precision end finishes.
Q2: What certifications are provided with each order?
A: All tubes include ASTM A213 certification, mill test reports (MTR), and optional ASME BPVC Section I/II stamps for pressure vessel applications.
Q3: How do these compare to carbon steel tubes in high-heat applications?
A: ASTM A213 T9 offers 30% higher creep resistance and 50% better oxidation resistance than carbon steel, extending service life in temperatures above 450°C.
With 20 years of export expertise to 80+ countries, Yuhong is ranked among China’s top 5 finned tube exporters. Beyond finned tubes, we specialize in high-performance boiler tubes, heat exchanger tubes, and custom alloy solutions. Our 55 production lines, 110+ skilled workers, and 20,000㎡ facility—equipped with advanced heat treatment and testing equipment—ensure compliance with global standards (ASTM, ASME, DIN).
We deliver on-time, with 24/7 technical support and tailored solutions.
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