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Hastelloy C22, B2, and B3 Pipes and Tubes are high-performance nickel-based alloys engineered for maximum resistance to corrosion, oxidation, and chemical attack. These pipes are widely used in chemical processing, pharmaceutical, power generation, and marine industries, where extreme durability and chemical resistance are essential.
Hastelloy C22 is known for its outstanding resistance to oxidizing and reducing agents, including ferric and cupric chlorides, acetic and formic acids, and seawater. This makes it an ideal choice for chemical reactors, scrubbers, heat exchangers, and piping systems handling highly corrosive fluids.
Hastelloy C276 pipes and tubes are high-performance nickel-molybdenum-chromium alloys engineered for the most aggressive industrial environments. Known for their exceptional corrosion resistance and mechanical strength, they are widely used in chemical processing, marine, pollution control, and pharmaceutical industries. These pipes and tubes are ideal for transporting highly corrosive fluids and ensuring long-term reliability in critical applications.
Hastelloy C276 contains approximately 57% nickel, 16% molybdenum, 15% chromium, along with small amounts of iron, cobalt, and tungsten. This composition provides excellent resistance to both oxidizing and reducing environments. The addition of molybdenum and chromium enhances resistance to pitting, crevice corrosion, and stress corrosion cracking, making it superior to standard stainless steels and many nickel alloys.
Hastelloy B2 is formulated to resist hydrochloric acid in all concentrations and temperatures. It also provides excellent protection against hydrogen chloride, sulfuric acid, and phosphoric acid, making it suitable for pickling systems, chemical reactors, and vacuum processing equipment.
Hastelloy B3 improves upon B2 by offering enhanced thermal stability and better resistance to pitting, stress corrosion cracking, and thermal cycling. It is preferred in applications involving strong reducing agents and harsh chemical environments that demand both durability and long-term reliability.
C276 pipes and tubes exhibit high mechanical strength, with tensile strength ranging from 690–760 MPa and yield strength around 310–380 MPa. Elongation typically ranges from 30–40%, offering excellent ductility. These mechanical properties allow the pipes and tubes to withstand high-pressure conditions, thermal stress, and mechanical loads without compromising structural integrity.
Hastelloy C276 provides exceptional resistance to a wide range of corrosive environments, including strong acids, chlorides, and oxidizing chemicals. It resists pitting, crevice corrosion, and stress corrosion cracking even in highly aggressive media. This makes it suitable for applications in chemical plants, desalination units, and marine environments where other materials would quickly deteriorate.
Specification Table
| Specification | Details |
|---|---|
| Grade | Hastelloy C276 |
| UNS Number | N10276 |
| Standard | ASTM B622 / B619 / ASME SB622 / SB619 |
| Size Range | 1/8” NB to 12” NB (Seamless), 1/8” NB to 48” NB (Welded) |
| Type | Seamless, Welded, ERW, Fabricated |
| Form | Round, Square, Rectangular, Hydraulic, etc. |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End, Threaded |
| Surface Finish | Bright, Polish, Pickled, Annealed |
| Manufacturing Process | Cold Drawn / Hot Finished |
| Density | 8.89 g/cm³ |
| Melting Point | 1325 – 1370 °C |
| Tensile Strength | 785 MPa (Min) |
| Yield Strength (0.2% Offset) | 355 MPa (Min) |
| Elongation | 40% (Min) |
| Corrosion Resistance | Excellent resistance to strong oxidizers, reducing agents, and chloride environments |
| Applications | Chemical Processing, Pollution Control, Marine, Flue Gas Scrubbers, Pulp & Paper, Petrochemical Industries |
Chemical Composition (Typical ranges for SSS32760)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 57 min |
| Chromium (Cr) | 15.5 – 17.5 |
| Molybdenum (Mo) | 15 – 17 |
| Iron (Fe) | 4 max |
| Cobalt (Co) | 3 max |
| Manganese (Mn) | 1 max |
| Silicon (Si) | 0.08 max |
| Carbon (C) | 0.01 – 0.02 |
| Tungsten (W) | 3 – 4.5 |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.03 max |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 485 – 690 |
| Yield Strength (MPa) | 170 – 310 |
| Elongation (%) | 40 – 50 |
| Hardness (HRB) | 95 – 100 |
| Density (g/cm³) | 8.9 |
| Melting Point (°C) | 1390 – 1440 |
| Modulus of Elasticity (GPa) | 207 |
Equivalent Grades
| Standard/Organization | Equivalent Grade |
|---|---|
| UNS | N10276 |
| EN / DIN | 2.4819 |
| JIS | CN7M |
| ASTM | B622, B619, B673 |
| ASME | SB622, SB619, SB673 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Nominal Pipe Size (NPS) | Outer Diameter (mm) | Wall Thickness (mm) | Weight per Meter (kg/m) |
|---|---|---|---|
| 1/2" | 21.3 | 2.77 | 1.68 |
| 3/4" | 26.7 | 2.87 | 2.26 |
| 1" | 33.4 | 3.38 | 3.08 |
| 1 1/2" | 48.3 | 3.68 | 4.92 |
| 2" | 60.3 | 3.91 | 6.44 |
| 3" | 88.9 | 4.55 | 10.68 |
| 4" | 114.3 | 4.85 | 15.69 |
| 6" | 168.3 | 6.35 | 28.36 |
| 8" | 219.1 | 7.11 | 43.58 |
| 10" | 273.0 | 7.62 | 62.04 |
| 12" | 323.9 | 9.53 | 87.44 |
Types Of Hastelloy C276 Pipe Tubes and Tubes
SS S32760 Seamless Pipe
SS S32760 Welded Pipe
SS S32760 ERW Pipe
SS S32760S EFW Pipe
Low Temperature Carbon Steel A333S Seamless Tube
S32760H Super Duplex Steel Welded Tube
S32760 Super Duplex Steel Capillary Tube
S32760H Super Duplex Steel Heat Exchanger Tubes
Frequently Asked Questions (FAQ)
Q1: What is Hastelloy C276 Pipe Tube?
A1: Hastelloy C276 Pipe Tube is a high-performance nickel-molybdenum-chromium alloy tube known for its excellent corrosion resistance in oxidizing and reducing environments, including acids and chlorides.
Q2: What are the standard specifications for Hastelloy C276 Pipe Tube?
A2: Common standards include ASTM B622, ASME SB622, ASTM B619, and ASTM B673. It is available in both seamless and welded forms.
Q3: What industries use Hastelloy C276 Pipe Tube?
A3: It is widely used in chemical processing, marine applications, pollution control equipment, pulp and paper industry, and seawater systems due to its excellent corrosion resistance.
Pipes & Tubes Supplier
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