Hastelloy C276 Instrumentation ,Hastelloy C276 Instrumentation Manufacturer, Hastelloy C276 Instrumentation Supplier,Hastelloy C276 Instrumentation Exporter,Hastelloy C276 Precision Instrumentation ,Hastelloy C276 Small Diameter Instrumentation ,Hastelloy C276 Instrumentation Instrumentation
Hastelloy C276 is a highly corrosion-resistant nickel-molybdenum-chromium alloy specifically engineered for use in the most demanding chemical and environmental conditions. With excellent resistance to a wide range of aggressive media, including strong oxidizers, reducers, chlorides, and mixed acid environments, C276 is a trusted material in critical instrumentation systems where failure is not an option. Its alloy composition, which includes added tungsten, enhances its durability in both oxidizing and reducing service environments.
In industrial instrumentation, Hastelloy C276 is extensively used for tubing, fittings, valves, diaphragms, thermowells, and sensor housings. These components are integral to systems that monitor and control processes in industries such as chemical processing, oil and gas, pharmaceuticals, marine, and pulp & paper. Because of its superior corrosion resistance, C276 is ideal for transmitting or sensing fluids containing hydrochloric acid, sulfuric acid, chlorine gas, wet chlorine, acetic acid, and seawater — all of which can cause rapid degradation in common stainless steels.
Hastelloy C276 maintains its mechanical integrity in high-temperature and high-pressure applications, which is critical for instrumentation operating under extreme process conditions. It resists localized corrosion forms such as pitting and crevice corrosion, as well as stress corrosion cracking, which can be catastrophic in process control environments. These properties make it particularly suitable for long-term deployment in aggressive fluid handling systems and in remote or hard-to-access locations where maintenance must be minimized.
Fabrication of instrumentation components from C276 is straightforward using standard procedures. The alloy is readily weldable using appropriate filler materials (such as ERNiCrMo-4), without the need for post-weld heat treatment in many cases. It also retains excellent corrosion resistance in the heat-affected zones, a key requirement for welded tubing or instrument manifolds. C276 tubing and components are available in standard instrumentation sizes and are fully compatible with precision systems from manufacturers like Swagelok, Parker, and others.
Specification of Hastelloy C276 Instrumentation
| Property / Feature | Specification / Description |
|---|---|
| Material Designation | Hastelloy® C276 (UNS N10276) |
| Standards (Product Forms) | ASTM B622 (Seamless Pipe/Tube), B619 (Welded Pipe), B626 (Welded Tube), B564 (Forgings), B366 (Fittings) |
| Nominal Composition (wt.%) | Ni (balance), Mo 15–17%, Cr 14.5–16.5%, Fe 4–7%, W 3–4.5%, Co ≤2.5%, Mn ≤1%, C ≤0.01%, V ≤0.35% |
| Corrosion Resistance | Exceptional in oxidizing/reducing acids, chlorides, wet chlorine, hypochlorite, and seawater |
| Temperature Range | –196°C to ~1040°C (–320°F to ~1900°F); depends on pressure and media |
| Tensile Strength (min) | 690 MPa (100 ksi) |
| Yield Strength (0.2% offset) | 283 MPa (41 ksi) |
| Elongation (min) | 40% (typical) |
| Hardness (max) | 100 HRB (annealed condition) |
| Weldability | Excellent; ERNiCrMo-4 filler recommended, no PWHT usually required |
| Available Product Forms | Instrumentation tubing, compression fittings, valves, manifolds, thermowells, diaphragms |
| Instrument Tubing Sizes | OD: 1/8" to 1", Wall: 0.028" to 0.083" (also available in metric sizes) |
| Pressure Ratings | Comparable to stainless steel tubing (per ASME B31.3 / Swagelok guidelines) |
| Surface Finish Options | 20–32 Ra µin (standard), Electropolished, Bright Annealed, Pickled |
| Typical Applications | Pressure transmitters, chemical injection lines, analyzer sampling systems, corrosive fluid control |
| Certifications Available | ASTM / ASME material certs, EN 10204 3.1, NACE MR0175/ISO 15156, PED 2014/68/EU (upon request) |
With compliance to standards such as ASTM B622, B619, and ASME SB-626, Hastelloy C276 provides the performance, reliability, and traceability needed for high-specification instrumentation. Whether used in sample conditioning systems, chemical injection lines, or pressure monitoring devices, Hastelloy C276 enables safe and stable process control in some of the world’s harshest industrial environments.
Chemical Composition of Hastelloy C276 Instrumentation
| Element | Weight % (Typical) | Remarks |
|---|---|---|
| Nickel (Ni) | Balance (approx. 57–61%) | Base element, ensures overall corrosion resistance |
| Molybdenum (Mo) | 15.0 – 17.0% | Provides resistance to pitting and crevice corrosion |
| Chromium (Cr) | 14.5 – 16.5% | Enhances resistance to oxidizing agents |
| Iron (Fe) | 4.0 – 7.0% | Present as residual; contributes to alloy strength |
| Tungsten (W) | 3.0 – 4.5% | Improves resistance to localized corrosion |
| Cobalt (Co) | ≤ 2.5% | Considered an impurity, but tolerable at low levels |
| Manganese (Mn) | ≤ 1.0% | Deoxidizer; helps in forming processes |
| Vanadium (V) | ≤ 0.35% | Minor addition for strength/corrosion resistance |
| Silicon (Si) | ≤ 0.08% | Minimizes carbide formation; aids weldability |
| Carbon (C) | ≤ 0.010% | Low carbon improves weld resistance to sensitization |
| Phosphorus (P) | ≤ 0.04% | Kept low to prevent embrittlement |
| Sulfur (S) | ≤ 0.03% | Low sulfur improves ductility and corrosion resistance |
With a proven track record as a Hastelloy C276 Instrumentation exporter in over 30 countries, Sumer Metal Industries ensures global availability, third-party inspection support, and client-specific customization. Our wide export network combined with strict quality standards has made us a preferred choice for SS C276 tubing worldwide.
Specification of Hastelloy C276 Instrumentation
| Property / Feature | Specification / Description |
|---|---|
| Material Designation | Hastelloy® C276 (UNS N10276) |
| Standards (Product Forms) | ASTM B622 (Seamless Pipe/Tube), B619 (Welded Pipe), B626 (Welded Tube), B564 (Forgings), B366 (Fittings) |
| Nominal Composition (wt.%) | Ni (balance), Mo 15–17%, Cr 14.5–16.5%, Fe 4–7%, W 3–4.5%, Co ≤2.5%, Mn ≤1%, C ≤0.01%, V ≤0.35% |
| Corrosion Resistance | Exceptional in oxidizing/reducing acids, chlorides, wet chlorine, hypochlorite, and seawater |
| Temperature Range | –196°C to ~1040°C (–320°F to ~1900°F); depends on pressure and media |
| Tensile Strength (min) | 690 MPa (100 ksi) |
| Yield Strength (0.2% offset) | 283 MPa (41 ksi) |
| Elongation (min) | 40% (typical) |
| Hardness (max) | 100 HRB (annealed condition) |
| Weldability | Excellent; ERNiCrMo-4 filler recommended, no PWHT usually required |
| Available Product Forms | Instrumentation tubing, compression fittings, valves, manifolds, thermowells, diaphragms |
| Instrument Tubing Sizes | OD: 1/8" to 1", Wall: 0.028" to 0.083" (also available in metric sizes) |
| Pressure Ratings | Comparable to stainless steel tubing (per ASME B31.3 / Swagelok guidelines) |
| Surface Finish Options | 20–32 Ra µin (standard), Electropolished, Bright Annealed, Pickled |
| Typical Applications | Pressure transmitters, chemical injection lines, analyzer sampling systems, corrosive fluid control |
| Certifications Available | ASTM / ASME material certs, EN 10204 3.1, NACE MR0175/ISO 15156, PED 2014/68/EU (upon request) |
🏭 Industry & Application
- ✅ Hastelloy C276 Instrumentation for Medical Industry
- ✅ Hastelloy C276 Instrumentation for Chemical Processing
- ✅ Hastelloy C276 Instrumentation for Instrumentation Lines
- ✅ Hastelloy C276 Instrumentation for Gas & Liquid Flow
- ✅ Hastelloy C276 Instrumentation for Heat Exchangers
❓ Frequently Asked Questions (FAQs)
Q1: What is Hastelloy C276 and why is it used in instrumentation?
Hastelloy C276 (UNS N10276) is a nickel-molybdenum-chromium alloy known for its exceptional corrosion resistance in aggressive chemical environments. In instrumentation, it is used for tubing, valves, fittings, thermowells, and diaphragm seals exposed to corrosive fluids such as chlorides, acids, and mixed oxidizers/reducers.
Q2: What industries use Hastelloy C276 instrumentation?
C276 is widely used in: Chemical and petrochemical plants Offshore and marine systems Pharmaceutical processing Power generation (including flue gas desulfurization) Waste treatment and pollution control systems
Q3: What types of instrumentation components are made from C276?
Common components include: Instrumentation tubing (1/8" to 1" OD) Compression fittings (double ferrule types) Needle valves and ball valves Thermowells and sensor housings Manifolds and diaphragm seals
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