Section 1: Product Overview
Hastelloy flanges are nickel-molybdenum-chromium alloy flanges with exceptional resistance to a wide range of corrosive chemicals and environments. Our Hastelloy flanges meet ASTM B564, ASTM B366, and ASME B16.5 standards, making them the premier choice for chemical processing, pollution control, and pharmaceutical applications.
As a leading Hastelloy flange manufacturer, we provide Hastelloy C276, C22, B2, and X grades in various flange types.
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
- ASTM B564/B366 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 |
| Hastelloy C22 | N06022 | Best mixed acid resistance | Mixed acid environments |
| Hastelloy B2 | N10665 | Reducing acid resistance | Sulfuric, phosphoric acid |
Section 4: Chemical Composition (All Grades)
| Element | C276 | C22 | B2 |
|---|
| Ni (Nickel) | Bal | Bal | ≥65 |
| Mo (Molybdenum) | 15.0-17.0 | 12.5-14.5 | 26.0-30.0 |
| Cr (Chromium) | 14.5-16.5 | 20.0-22.5 | ≤1.0 |
| Fe (Iron) | 4.0-7.0 | 2.0-6.0 | ≤2.0 |
| W (Tungsten) | 3.0-4.5 | 2.5-3.5 | – |
| Co (Cobalt) | ≤2.5 | ≤2.5 | ≤1.0 |
| C (Carbon) | ≤0.01 | ≤0.01 | ≤0.02 |
Section 5: Mechanical Properties (All Grades)
| Property | C276 | C22 | B2 |
|---|
| Tensile Strength | ≥690 MPa | ≥690 MPa | ≥760 MPa |
| Yield Strength | ≥275 MPa | ≥310 MPa | ≥350 MPa |
| Elongation | ≥40% | ≥40% | ≥40% |
| Hardness | 100 HRB max | 100 HRB max | 100 HRB max |
Section 6: Flange Types & Specifications
Available Flange Types
| Type | Description | Pressure Class |
|---|
| Weld Neck (WN) | Long radius neck, butt weld | ASME CL150-2500 |
| Slip-On (SO) | Slip over pipe | ASME CL150-1500 |
| Blind (BL) | Blank flange, no bore | ASME CL150-2500 |
| Threaded (TH) | Threads, no welding | ASME CL150-1500 |
Size Range
| Parameter | Range |
|---|
| Diameter | 1/2″ (DN15) – 24″ (DN600) |
| Pressure | ASME Class 150, 300, 600, 900, 1500, 2500 |
Section 7: Applications by Grade
| Grade | Recommended Applications |
|---|
| C276 | Chemical processing, pharmaceutical, pollution control, waste treatment |
| C22 | Mixed acid environments, chlorination systems, pesticide production |
| B2 | Reducing acids – sulfuric, phosphoric, hydrochloric |
Section 8: Why Choose Us
- ISO 9001:2015 certified manufacturer
- Mill test certificates provided
- Competitive pricing direct from factory
- Quick lead times – typically 2-3 weeks
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