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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
2. Mechanical Properties
Designed for extreme thermal stress, these tubes deliver superior mechanical performance in high-heat environments:
Property
Value
Advantage in Applications
Tensile Strength
≥515 MPa
Resists rupture under pressure
Yield Strength
≥205 MPa
Maintains integrity under load
Elongation (in 50mm)
≥30%
Accommodates thermal expansion
Maximum Operating Temp
650°C (1202°F)
Ideal for high-temperature heat exchangers
3. Equivalent Materials & Standards
For global project compatibility, ASTM A213 T9 aligns with these international equivalents:
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.
8. About Yuhong Holding Group Co., Ltd
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.
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
