Section 1: Product Overview
Hastelloy seamless pipe and tube are nickel-molybdenum-chromium alloys with exceptional resistance to a wide range of corrosive chemicals and environments. Our Hastelloy seamless tubing meets ASTM B622, ASTM B619, and ASME SB-622 standards, making it the premier choice for chemical processing, pollution control, waste treatment, and pharmaceutical applications.
As a leading Hastelloy pipe manufacturer, we provide Hastelloy C276, C22, B2, B3, and X grades in seamless pipe and tube form.
Section 2: Key Features
- Excellent resistance to mixed acids and chlorides
- Superior pitting and crevice corrosion resistance
- Outstanding stress corrosion cracking resistance
- Resistant to reducing and oxidizing environments
- Excellent formability and weldability
- ASTM B622/B619 certified manufacturing process
- Complete material test reports (MTR) provided
Section 3: Available Grades Overview
| Grade | UNS No. | Key Feature | Main Applications |
|---|---|---|---|
| Hastelloy C276 | N10276 | Universal acid resistance | Chemical processing, pollution control |
| Hastelloy C22 | N06022 | Best mixed acid resistance | Mixed acid environments, chlorination |
| Hastelloy B2 | N10665 | Reducing acid resistance | Sulfuric, phosphoric acid |
| Hastelloy B3 | N10675 | Improved formability B2 | Same as B2, better加工 |
| Hastelloy X | N06002 | High temperature | Aerospace, gas turbines |
Section 4: Chemical Composition (All Grades)
| Element | C276 | C22 | B2 | B3 | X |
|---|---|---|---|---|---|
| Ni (Nickel) | Bal | Bal | ≥65 | ≥65 | Bal |
| Mo (Molybdenum) | 15.0-17.0 | 12.5-14.5 | 26.0-30.0 | 26.0-30.0 | 8.0-10.0 |
| Cr (Chromium) | 14.5-16.5 | 20.0-22.5 | ≤1.0 | ≤1.0 | 20.0-23.0 |
| Fe (Iron) | 4.0-7.0 | 2.0-6.0 | ≤2.0 | ≤1.0 | 17.0-20.0 |
| W (Tungsten) | 3.0-4.5 | 2.5-3.5 | – | – | 0.5-2.5 |
| Co (Cobalt) | ≤2.5 | ≤2.5 | ≤1.0 | ≤1.0 | ≤2.5 |
| V (Vanadium) | ≤0.35 | ≤0.35 | – | – | – |
| C (Carbon) | ≤0.01 | ≤0.01 | ≤0.02 | ≤0.01 | ≤0.05 |
| Si (Silicon) | ≤0.08 | ≤0.08 | ≤0.10 | ≤0.10 | ≤0.50 |
| Mn (Manganese) | ≤1.0 | ≤0.50 | ≤1.0 | ≤3.0 | ≤0.50 |
Section 5: Mechanical Properties (All Grades – Annealed)
| Property | C276 | C22 | B2 | B3 | X |
|---|---|---|---|---|---|
| Tensile Strength | ≥690 MPa | ≥690 MPa | ≥760 MPa | ≥735 MPa | ≥660 MPa |
| Yield Strength | ≥275 MPa | ≥310 MPa | ≥350 MPa | ≥325 MPa | ≥265 MPa |
| Elongation | ≥40% | ≥40% | ≥40% | ≥40% | ≥30% |
| Hardness | ≤100 HRB | ≤100 HRB | ≤100 HRB | ≤100 HRB | ≤100 HRB |
| Density | 8.89 g/cm³ | 8.62 g/cm³ | 9.22 g/cm³ | 9.22 g/cm³ | 8.22 g/cm³ |
Section 6: Specifications & Dimensions
Applicable Standards
| Standard | Description |
|---|---|
| ASTM B622 | Seamless Pipe |
| ASTM B619 | Welded Pipe |
| ASME SB-622 | ASME Standard |
| AMS 5390 | C276 Sheet/Plate |
| AMS 5391 | C276 Bar |
| AMS 5392 | C276 Seamless Tube |
Size Range
| Parameter | Range |
|---|---|
| Outside Diameter | 1/4″ (6.35mm) – 12″ (323.9mm) |
| Wall Thickness | 0.035″ (0.89mm) – 0.500″ (12.7mm) |
| Schedules Available | 5s, 10s, 40s, 80s, 160, XXH |
| Length | Random / Fixed 6m, 12m, or as required |
Section 7: Applications by Grade
| Grade | Recommended Applications |
|---|---|
| C276 | Chemical processing, pharmaceutical, pollution control, waste treatment, sulfuric acid, hydrochloric acid |
| C22 | Mixed acid environments, chlorination systems, pesticide production, organic acid processing |
| B2 | Reducing acids – sulfuric, phosphoric, hydrochloric at all concentrations |
| B3 | All B2 applications where improved formability is needed |
| X | Aerospace engines, gas turbines, jet engines, furnace components |
Section 8: Corrosion Resistance Comparison
| Grade | HCl | H2SO4 | H3PO4 | Mixed Acids | Oxidation |
|---|---|---|---|---|---|
| C276 | Excellent | Excellent | Excellent | Good | Good |
| C22 | Excellent | Excellent | Excellent | Excellent | |
| B2 | Excellent | Excellent | Excellent | Poor | |
| B3 | Excellent | Excellent | Excellent | Poor | |
| X | Good | Good | Good | Good | Excellent |
Section 9: Why Choose Us
- ISO 9001:2015 certified manufacturer
- Mill test certificates provided with every order
- Competitive pricing direct from factory
- Quick lead times – typically 2-4 weeks
- Global shipping – worldwide logistics support
- Technical support – free material selection guidance
Section 10: FAQ
Q: What is the difference between Hastelloy C276 and C22? A: C22 offers better overall corrosion resistance in mixed acid environments and is more versatile. C276 is excellent for specific acid applications.
Q: Which Hastelloy is best for hydrochloric acid? A: Both C276 and C22 are excellent for hydrochloric acid at all concentrations.
Q: Is Hastelloy B2 suitable for sulfuric acid? A: Yes, Hastelloy B2 is specifically designed for reducing acids like sulfuric and phosphoric.
Q: What is Hastelloy X used for? A: Hastelloy X is primarily used in aerospace and gas turbine applications due to its high-temperature strength.
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