ASTM B622 UNS N10276 Seamless Pipe
Alloy: UNS N10276 (Hastelloy C-276)
Type: Seamless
Size Range: 1/8" to 16" NB
Wall Thickness: Schedule 5S to XXS
Length: Single Random: 5-7m, Double Random: 10-14m
Certification: ISO 9001, SGS test report, material certificate (MTC)
BAOHUI STEEL manufactures ASTM B622 UNS N10276 seamless pipe (Hastelloy C-276), a nickel-molybdenum-chromium alloy with exceptional corrosion resistance in both oxidizing and reducing environments. This versatile alloy exhibits outstanding performance in a wide range of corrosive media, including strong oxidizers, sulfuric acid, hydrochloric acid, and chloride-containing solutions. Its low carbon content minimizes carbide precipitation during welding, making it ideal for as-welded applications in aggressive chemical environments.
Key Features
Exceptional Corrosion Resistance
Outstanding performance in both oxidizing and reducing environments
Versatile Material
Resists a wide range of acids, alkalis, and chloride solutions
Excellent Localized Corrosion Resistance
Superior resistance to pitting and crevice corrosion
Good Thermal Stability
Maintains properties in high-temperature service
Excellent Fabricability
Can be welded and formed using standard methods
Low Carbon Content
Minimizes carbide precipitation in weld heat-affected zones
Technical Specifications
|
Parameter |
Specification |
|
Standard |
ASTM B622 / ASME SB622 |
|
Alloy |
UNS N10276 (Hastelloy C-276) |
|
Type |
Seamless |
|
Size Range |
1/8" to 16" NB |
|
Wall Thickness |
Schedule 5S to XXS |
|
Length |
Single Random: 5-7m, Double Random: 10-14m |
Chemical Composition (%)
|
Element |
Requirements |
Typical Value |
|
Nickel (Ni) |
Balance |
57.0 |
|
Molybdenum (Mo) |
15.0-17.0 |
16.0 |
|
Chromium (Cr) |
14.5-16.5 |
15.5 |
|
Iron (Fe) |
4.0-7.0 |
5.5 |
|
Tungsten (W) |
3.0-4.5 |
3.7 |
|
Cobalt (Co) |
≤ 2.5 |
1.0 |
|
Manganese (Mn) |
≤ 1.00 |
0.5 |
|
Vanadium (V) |
≤ 0.35 |
0.2 |
|
Silicon (Si) |
≤ 0.08 |
0.04 |
|
Phosphorus (P) |
≤ 0.04 |
0.02 |
|
Sulfur (S) |
≤ 0.03 |
0.01 |
|
Carbon (C) |
≤ 0.01 |
0.005 |
Mechanical Properties
|
Property |
Requirements |
Typical Value |
|
Tensile Strength |
≥ 690 MPa |
785 MPa |
|
Yield Strength (0.2% Offset) |
≥ 283 MPa |
365 MPa |
|
Elongation (in 2 inches) |
≥ 40% |
50% |
|
Hardness (HB) |
≤ 223 |
195 |
Physical Properties
|
Property |
Value |
|
Density |
8.89 g/cm³ |
|
Melting Point |
1325-1370°C |
|
Electrical Resistivity |
130 μΩ·cm |
|
Thermal Conductivity |
10.8 W/m·K |
|
Coefficient of Thermal Expansion |
11.2 × 10⁻⁶/°C (20-100°C) |
Our Quality Commitment
At BAOHUI STEEL, ASTM B622 UNS N10276 Seamless Pipe quality is built into every step of our manufacturing process. We deliver materials with guaranteed performance through:
Verified Material Quality
EN 10204 3.1 certification with complete traceability
Independent third-party inspection support (SGS/BV/TUV)
Full chemical analysis and mechanical testing documentation
Stringent Process Control
Chemical composition verified by optical emission spectroscopy
Mechanical properties tested to ASTM standards
Dimensional accuracy maintained within strict tolerances
Non-destructive testing (UT, ET) on all critical products
Reliable Performance
Surface quality inspection for defect-free delivery
Proper protective packaging ensures perfect condition
Consistent batch-to-batch quality and performance
Technical support throughout your project lifecycle
Applications
Chemical Processing
Reactors, heat exchangers, distillation columns
Pollution Control
Flue gas desulfurization systems, scrubbers
Pharmaceutical
Process equipment, reactors, piping systems
Pulp & Paper
Digesters, bleach plants, chemical recovery systems
Waste Treatment
Incinerator components, waste gas systems
Industrial
Acid production equipment, pickling systems
Frequently Asked Questions
Q: What certifications accompany your materials?
A: All materials include EN 10204 3.1 certification with full traceability. We also support third-party inspections and provide all necessary test documentation.
Q: How do you ensure material quality?
A: Through rigorous testing, including chemical analysis, mechanical property verification, dimensional checks, and non-destructive examination where required.
Q: What is your typical delivery time?
A: Standard products: 15-30 days. Custom orders: 30-50 days, depending on specifications and testing requirements.
Q: Can you provide special testing?
A: Yes, we offer additional testing, including corrosion testing, microstructural analysis, and performance validation to meet your specific requirements.
Q: Do you offer technical support?
A: Absolutely. Our technical team provides comprehensive support from material selection through application engineering to ensure optimal performance.
Q: What packaging standards do you follow?
A: We use export-grade packaging with protective coatings, proper bundling, and clear marking to ensure materials arrive in perfect condition.
Q: How do you handle quality claims?
A: We maintain material samples and test records for every batch. Any quality concerns are investigated immediately with transparent communication throughout the process.
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