Hastelloy C276 / 2.4819 Alloy Nickel Alloy Round Bar Diameter 30mm 40mm 50mm 60mm 80mm 100mm
Quick Informations
| Grade | Hastelloy C276 / 2.4819 | Shape | Round Bar |
| Diameter | 6.0 - 350mm | Type | Hot rolled , forged |
| Length | Custom Cutting any length as request | Certificate | EN 10204-3.1 |
More Specification Informations
| Products Name | Hastelloy C276 Round Bar / Rod |
| Diameter | 6.0 - 350mm |
| Length | custom cutting any length as request |
| Surface | Black , bright |
| Brand | DELTA |
| Service | cutting, Polishing |
| MOQ | 2 Kgs |
| Other Type | round bar, strip,coil,pipe.sheet, plate,wire.etc |
| Packing | waterproof paper and wooden pallets, wooden box |
| Loading Port | Shanghai Port |
| Price term | EXW,FOB,CIF,CFR |
| Deliver time | within 12 days |
Hastelloy C276 / 2.4819 Alloy Nickel Alloy Round Bar Diameter 30mm 40mm 50mm 60mm 80mm 100mm
Hastelloy C276 (UNS N10276, W. No. 2.4819) is a premium nickel-molybdenum-chromium alloy renowned for its exceptional corrosion resistance in aggressive environments, making its round bar form a critical component in industries requiring durability and reliability. Below is a comprehensive overview of its key parameters, standards, properties, applications, and equivalent grades, with a focus on the commonly used diameters (30mm, 40mm, 50mm, 60mm, 80mm, 100mm).
1. Chemical Composition (Key Parameters)
The superior performance of Hastelloy C276 stems from its precisely balanced chemical composition, which enhances corrosion resistance and mechanical strength. The typical composition (per ASTM B574 standard) is as follows:
| Element | Content Range (%) | Function |
| Nickel (Ni) | ≥ 57 | Base metal; provides structural stability and resistance to chloride stress corrosion cracking |
| Molybdenum (Mo) | 15.0 - 17.0 | Enhances resistance to pitting, crevice corrosion, and reducing acids (e.g., sulfuric acid) |
| Chromium (Cr) | 14.5 - 16.5 | Improves oxidation resistance and resistance to oxidizing acids (e.g., nitric acid) |
| Iron (Fe) | 4.0 - 7.0 | Optimizes mechanical properties and processability (e.g., hot working) |
| Tungsten (W) | 3.0 - 4.5 | Boosts pitting corrosion resistance, especially in chloride-rich environments |
| Cobalt (Co) | ≤ 2.5 | Controls alloy stability and minimizes intermetallic phase formation |
| Carbon (C) | ≤ 0.01 | Reduces carbide precipitation, preventing intergranular corrosion |
| Silicon (Si) | ≤ 0.08 | Limits oxide formation and improves casting quality |
| Manganese (Mn) | ≤ 1.0 | Aids in deoxidation during manufacturing without compromising corrosion resistance |
2. Manufacturing & Material Standards
Hastelloy C276 round bars (30mm-100mm diameter) are produced and inspected in compliance with international standards to ensure consistency and quality. The most widely adopted standards include:
| Standard Code | Issuing Body | Scope of Application |
| ASTM B574 | ASTM International | Specification for nickel-chromium-molybdenum-columbium alloys (including C276) round bars, rods, and wire |
| ASME SB574 | ASME International | Boiler and pressure vessel code-compliant version of ASTM B574 (for high-pressure applications) |
| DIN EN 10095 | DIN (Germany) | European standard for nickel and nickel alloys; covers 2.4819 round bars |
| JIS H4552 | JIS (Japan) | Japanese industrial standard for nickel alloy bars, including C276 equivalents |
| GB/T 2054 | GB (China) | National standard for nickel and nickel alloy bars; applicable to C276 round bars in domestic projects |
Note: For the 30mm-100mm diameter range, bars are typically supplied in hot-rolled or cold-finished conditions. Hot-rolled bars (for larger diameters like 80mm-100mm) offer better ductility, while cold-finished bars (for 30mm-60mm) provide tighter dimensional tolerance (e.g., h9/h10) and smoother surface finish (Ra ≤ 1.6μm).
3. Mechanical & Corrosion Properties
3.1 Mechanical Properties (At Room Temperature, Annealed Condition)
The mechanical performance of Hastelloy C276 round bars (30mm-100mm) meets the requirements of ASTM B574, ensuring suitability for load-bearing and structural applications:
| Property | Minimum Requirement | Test Method |
| Tensile Strength (σb) | 795 MPa | ASTM E8/E8M |
| Yield Strength (σ0.2) | 379 MPa | ASTM E8/E8M |
| Elongation (δ) | 40% | ASTM E8/E8M |
| Hardness (HB) | ≤ 210 | ASTM E10 |
Key Advantage: The alloy retains excellent mechanical properties even after long-term exposure to high temperatures (up to 1093°C/2000°F), with tensile strength remaining above 400 MPa at 650°C.
3.2 Corrosion Resistance (Core Advantage)
Hastelloy C276 is widely recognized as one of the most corrosion-resistant nickel alloys, particularly in harsh environments:
- Chloride Environments: Resists pitting, crevice corrosion, and stress corrosion cracking (SCC) in seawater, brines, and chloride-based solvents—critical for marine and offshore applications.
- Acid Resistance: Performs well in both oxidizing acids (e.g., 50% nitric acid at 60°C) and reducing acids (e.g., 98% sulfuric acid at 100°C); also tolerates mixed acids (e.g., sulfuric + nitric acid).
- Oxidation & Sulfidation: Withstands continuous exposure to air at 1093°C (short-term) and 871°C (long-term) without significant scaling; resistant to sulfur-containing gases (e.g., H₂S) in petrochemical processes.
- Low-Temperature Stability: No embrittlement at cryogenic temperatures (down to -269°C), making it suitable for LNG (liquefied natural gas) equipment.
4. Applications of 30mm-100mm Round Bars
The 30mm-100mm diameter range of Hastelloy C276 round bars is versatile, catering to medium-to-large structural and component needs across industries. Typical applications include:
- Petrochemical & Refining: Manifolds, valve stems, pump shafts, and reactor internals (resists sour gas, crude oil, and acidic catalysts).
- Chemical Processing: Heat exchanger tubesheets, agitator shafts, and storage tank nozzles (handles aggressive chemicals like acetic acid, phosphoric acid, and chlorine).
- Marine & Offshore: Propeller shafts, seawater cooling system components, and subsea pipeline connectors (withstands seawater corrosion and biofouling).
- Power Generation: Boiler tubes, turbine blades, and flue gas desulfurization (FGD) systems (resists high-temperature oxidation and sulfur dioxide).
- Aerospace & Defense: Engine components and rocket fuel lines (tolerates extreme temperatures and corrosive propellants).
- Pharmaceutical & Food Processing: Equipment shafts and mixing blades (complies with hygiene standards and resists cleaning agents like nitric acid).
5. Equivalent Grades
Hastelloy C276 is marketed under different designations globally, but these grades share identical chemical composition and performance. The key equivalents are:
| Nomenclature System | Grade Designation | Country/Region |
| UNS (Unified Numbering System) | N10276 | USA/Global |
| Werkstoff Number | 2.4819 | Germany/Europe |
| DIN | NiMo16Cr15W | Germany |
| EN | NiCr21Mo14W | Europe |
| JIS | NW276 | Japan |
| GB (Chinese National Standard) | NS3304 | China |
| BS (British Standard) | NA15 | UK |
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Hastelloy C276 / 2.4819 Alloy Nickel Alloy Round Bar Diameter 30mm 40mm 50mm 60mm 80mm 100mm Images
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