ASME B16.5 B564 UNS N02200 Flange
ASME B16.5 B564 UNS N02200 Flange refers to a high-purity nickel alloy flange manufactured in compliance with ASME B16.5 standards for dimensions and pressure ratings, using UNS N02200 (Nickel 200) material as specified in ASTM B564.
High Quality ASME B16.5 B564 UNS N02200 Flange
- Pressure Ratings Class 150/300/600/900/1500/2500
- Size Range NPS ½” to 24″ (ASME B16.5 standard)
- Face types FF, RF, RTJ
ASME B16.5 B564 UNS N02200 Flange
The ASME B16.5 standard covers various flange designs, including:
- Weld Neck Flange: Preferred for high-pressure systems, connected via welding.
- Slip-On Flange: Easy installation, suitable for low-pressure applications.
- Blind Flange: Used to seal pipe ends.
- Threaded Flange: Connected via threads, eliminating the need for welding.
- Lap Joint Flange: Paired with stub ends for easy disassembly.
Material Properties (ASTM B564 UNS N02200)
Material characteristics:
- Composition: 99.6% pure nickel (Ni), with extremely low carbon content (≤0.15%)
Corrosion resistance:
- Resistant to reducing media (e.g., hydrochloric acid, sulfuric acid, hydrofluoric acid)
- Resistant to high-temperature caustics (e.g., NaOH, KOH)
- Not suitable for strongly oxidizing environments (e.g., nitric acid, high-concentration chlorates)
Mechanical properties:
- Tensile strength ≥380 MPa, yield strength ≥103 MPa
- Maximum service temperature: approximately 316°C (600°F) in oxidizing environments; higher temperatures require inert/reducing environments
Suitable Media Examples
- Caustic solutions (≤50% NaOH concentration, ≤200°C)
- Molten salts (e.g., chlorides, fluorides)
- Organic acids (e.g., acetic acid, fatty acids)
Common Issues and Precautions
- Corrosion failure: Avoid use in oxygen-containing or oxidizing acids (e.g., nitric acid)
- Thermal expansion: Nickel’s low thermal expansion coefficient (13.3 μm/m·°C) requires consideration of piping thermal stress
- Cost-effectiveness: Nickel alloys are expensive; recommended only for essential high-corrosion applications
Typical Applications
- Chemical/petrochemical: Reactors, heat exchangers, pipelines for corrosive fluids
- Pharmaceutical/food: High-purity process systems (nickel’s cleanliness meets FDA requirements)
- Marine engineering: Corrosion-resistant pumps and valves for seawater
- Nuclear industry: Nuclear fuel processing equipment (requires special certification)
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More Information about ASME B16.5 B564 UNS N02200 Flange
Alternate Names for UNS N02200
| Standard/Region | Designation | Notes |
| UNS (USA) | N02200 | Universal numbering system. |
| EN (Europe) | Ni 99.6 (EN 2.4060) | ≥99.6% Ni purity. |
| JIS (Japan) | NW 2200 | Equivalent Japanese standard. |
| GB (China) | NS1402 | Chinese pure nickel designation. |
| Common Name | Nickel 200 | Widely used industry term. |
Pressure–Temperature Ratings for B564 UNS N02200
Comparison with Alternative Materials
| Material | Advantages | Limitations |
| N02200 (Nickel 200) | • High purity • Excellent resistance to reducing media (HCl, H₂SO₄, NaOH) • Good machinability | • Poor resistance to oxidizing acids (HNO₃) • High material cost |
| 316 Stainless Steel | • Cost-effective • Good resistance to oxidizing environments • Widely available | • Susceptible to chloride stress corrosion cracking • Limited to moderate temperatures |
| Hastelloy C276 | • Superior resistance to both oxidizing and reducing mixed acids • Excellent for harsh chemical environments | • Very expensive • Difficult to machine and weld • Requires specialized fabrication |
FAQ
- The primary advantage is exceptional corrosion resistance in reducing environments (e.g., hydrochloric acid, sulfuric acid, and caustic solutions), along with high purity (≥99.6% Ni) for sensitive applications like pharmaceuticals and food processing.
Avoid in:
- Strongly oxidizing conditions (e.g., nitric acid, chlorates)
- Applications where cost is critical (stainless steel may suffice)
- Temperatures above 316°C (600°F) in oxidizing atmospheres
Yes, when:
- Properly selected per ASME B16.5 pressure class (e.g., Class 300, 600)
- Paired with compatible gaskets (PTFE for RF faces, soft iron for RTJ)
- Operating within temperature-rated limits
✔ Standard markings (ASME B16.5, ASTM B564, N02200)
✔ Material Test Reports (MTRs) with chemical analysis
✔ Heat treatment certification (if applicable)
More Resources:
For dimension tables, supplier quotes, or corrosion test data, please provide:
- Media composition (Cl⁻ concentration, pH, temperature).
- Pressure rating and connected piping material (e.g., duplex steel pipe A790 S32750).
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