Hastelloy C276 Flanges
Hastelloy C2000 Flanges (UNS N06200, WNR 2.4675) Manufacturer & Supplier
Hastelloy C2000 Flanges are high-performance nickel-chromium-molybdenum flanges designed for superior resistance to a broad range of corrosive environments. As one of the most versatile Hastelloy alloys, C2000 offers excellent resistance to both reducing and oxidizing chemicals, making it ideal for demanding industries such as chemical processing, pharmaceuticals, seawater systems, pollution control, and petrochemicals.
These flanges combine the corrosion-resistant qualities of traditional Hastelloy alloys with enhanced resistance to oxidizing media due to the presence of copper. They deliver exceptional durability, high mechanical strength, and reliable performance even at elevated temperatures.
Key Features
Outstanding resistance to both reducing and oxidizing chemicals
Superior resistance to pitting, crevice corrosion & stress corrosion cracking
Excellent performance in sulfuric acid, hydrochloric acid & chlorine environments
High tensile strength and durability at high temperatures
Excellent weldability and fabricability
Suitable for aggressive chemical processing & high-pressure applications
Long service life with minimal maintenance requirements
Specifications
| Specification | Details |
|---|---|
| Grade | Hastelloy C2000 |
| UNS | N06200 |
| Werkstoff Nr. | 2.4675 |
| Standards | ASTM B564, ASME SB564 |
| Flange Types | Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, Orifice, Long Weld Neck |
| Size Range | ½” to 48” |
| Class / Pressure Rating | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Face Type | RF, RTJ, FF |
| Manufacturing Process | Forged / Plate / Cast |
Equivalent Grades
| Grade | UNS | Werkstoff Nr. |
|---|---|---|
| Hastelloy C2000 | N06200 | 2.4675 |
Available Sizes
Flange Size: ½” to 48”
Pressure Class: 150# to 2500#
Custom sizes available on request
Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 15.5 – 17.5 |
| Chromium (Cr) | 22 – 24 |
| Copper (Cu) | 1.3 – 1.9 |
| Iron (Fe) | 3 max |
| Cobalt (Co) | 2.5 max |
| Manganese (Mn) | 0.5 max |
| Silicon (Si) | 0.08 max |
| Carbon (C) | 0.01 max |
| Sulfur (S) | 0.03 max |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 760 MPa (min) |
| Yield Strength (0.2% offset) | 380 MPa (min) |
| Elongation | 40% (min) |
| Hardness | 95 HRB max |
Physical Properties
| Property | Value |
|---|---|
| Density | 8.69 g/cm³ |
| Melting Range | 1350 – 1380°C |
| Electrical Resistivity | 1.20 μΩ·m |
| Thermal Conductivity | 8.9 W/m·K |
| Specific Heat | 427 J/kg·K |
Types of Hastelloy C2000 Flanges
Weld Neck Flanges
Blind Flanges
Slip-On Flanges
Threaded Flanges
Socket Weld Flanges
Long Weld Neck Flanges
Lap Joint Flanges
Orifice Flanges
Spectacle Blind Flanges
Reducing Flanges
Corrosion Resistance
Hastelloy C2000 offers exceptional corrosion resistance, especially due to its unique copper addition which enhances resistance to oxidizing media. Key benefits include:
Outstanding performance in sulfuric acid, HCl, HF, and acetic acid
Excellent resistance to pitting & crevice corrosion
Very high resistance to stress corrosion cracking
Performs strongly in chlorine-containing environments
Suitable for highly aggressive chemical processing
Heat Resistance
Stable mechanical strength in temperatures up to 600°C
Excellent oxidation resistance
Suitable for high-temperature chemical processing
Retains toughness even after prolonged thermal exposure
Heat Treatment
Solution Annealing: 1120°C – 1175°C
Water quenching or rapid cooling
Heat treatment improves corrosion resistance and mechanical strength
Welding
Hastelloy C2000 can be welded using:
GTAW (TIG Welding)
GMAW (MIG Welding)
SMAW
Key guidelines:
Use matching filler metal
Clean weld area to avoid contamination
Low heat input recommended
Produces high-quality weld joints without cracking
Fabrication
Good formability due to excellent ductility
Suitable for machining, forging, rolling & forming
Must use carbide tools for machining
Requires proper annealing after heavy fabrication
Applications
Chemical Processing Plants
Petrochemical & Refining Industry
Pharmaceuticals & Biotechnology
Flue Gas Desulfurization Systems
Pollution Control Equipment
Marine & Offshore Applications
Heat Exchangers & Pressure Vessels
Pulp & Paper Industry
Acid Production Plants