Hastelloy C276 High Temp Rods Chloride Sulfuric Acid Resistant Alloy
Hastelloy C276 High-Temp Rods | Chloride & Sulfuric Acid Resistant Alloy
Hastelloy C276 bar, a nickel-molybdenum-chromium alloy, excels in extreme environments, outperforming conventional alloys like Inconel® or Monel®. Engineered for severe chemical, petrochemical, and marine applications, Hastelloy C276 bars deliver unmatched resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in chloride-rich or acidic conditions—critical for Southeast Asia’s humid, coastal climates. Unlike generic stainless steels or lower-grade nickel alloys, C276 bars maintain structural integrity in oxidizing and reducing media, even at elevated temperatures (up to 1040°C). This makes them ideal for heat exchangers, reactors, and offshore drilling components. With superior weldability and minimal post-weld treatment, Hastelloy C276 bars reduce downtime and lifecycle costs, aligning with the cost-efficiency priorities of South Asian and ASEAN industries. Trusted by global suppliers (referencing Haynes International® and Corrosion Materials® standards), C276 bars ensure reliability in sulfuric, hydrochloric, and phosphoric acid environments, cementing their role as the go-to solution for high-risk, mission-critical projects. For ISO-certified Hastelloy C276 bar stock with fast lead times across India, Thailand, and Indonesia, prioritize vendors offering mill-test reports and tailored machining services.
Chemical Composition, Applicable Standards & Physical Parameters For Hastelloy C276 Rod
| Category | Details |
|---|---|
| Chemical Composition | |
| Nickel (Ni) | Balance |
| Chromium (Cr) | 14.5–16.5% |
| Molybdenum (Mo) | 15.0–17.0% |
| Iron (Fe) | 4.0–7.0% |
| Tungsten (W) | 3.0–4.5% |
| Cobalt (Co) | ≤2.5% |
| Carbon (C) | ≤0.01% |
| Manganese (Mn) | ≤1.0% |
| Silicon (Si) | ≤0.08% |
| Sulfur (S) | ≤0.03% |
| Phosphorus (P) | ≤0.04% |
| Vanadium (V) | ≤0.35% |
| Applicable Standards | |
| ASTM | B574 (Bar & Wire), B575 (Plate/Sheet/Strip), B619/B626 (Welded Pipe) |
| ASME | SB-574, SB-575 |
| EN | 2.4819 |
| Physical Parameters | |
| Density | 8.89 g/cm³ |
| Melting Range | 1325–1370°C |
| Elastic Modulus | 205–208 GPa |
| Thermal Expansion (20–100°C) | 11.7 × 10⁻⁶/°C |
| Thermal Conductivity (100°C) | 10.2 W/m·K |
| Electrical Resistivity | ~1.3 μΩ·m |
| Magnetic Permeability | Weakly magnetic (varies with processing) |
Mechanical Properties of Hastelloy C276 rod
| Property | Typical Value | Conditions/Notes |
|---|---|---|
| Tensile Strength (Rm) | 690–760 MPa | Room temperature (annealed condition); may vary with cold working or heat treatment. |
| Yield Strength (Rp0.2) | 283–350 MPa | Room temperature; lower values (~205 MPa) may apply to specific processing states. |
| Elongation (A5%) | 40–60% | Room temperature; higher elongation in annealed condition. |
| Hardness | 80–100 HRB | Rockwell B scale; hardness increases with cold working. |
| Elastic Modulus | 205–208 GPa | Linear elasticity range at room temperature. |
| Shear Modulus | 79 GPa | Typical value for solid solution-treated material. |
| Impact Toughness | ≥100 J (Charpy V-notch) | Room temperature; tested per ASTM A370. |
| High-Temperature Strength | 200–300 MPa (Yield, 600°C) | Retains strength at elevated temperatures; dependent on exposure time. |
| Creep Strength | 80 MPa (1000 hours at 600°C) | Stress rupture tested per ASTM E139. |
| Fatigue Strength | ~300 MPa (10⁷ cycles, R = -1) | Rotating beam fatigue tested at room temperature. |
Application Fields For Hastelloy C276 Rods
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Chemical Processing Equipment
(Reactors, heat exchangers, valves, piping systems in aggressive acid/chloride environments) -
Flue Gas Desulfurization (FGD) Systems
(Scrubbers, ductwork, and components in power plants/industrial boilers exposed to sulfuric acid) -
Oil & Gas Industry
(Downhole tubing, offshore platforms, separators for sour gas/high-sulfur crude applications) -
Pharmaceutical & Fine Chemical Manufacturing
(Reactors, distillation columns handling concentrated acids, alkalis, or solvents) -
Nuclear Industry
(Nuclear fuel reprocessing equipment, radioactive waste containment systems) -
Marine Engineering
(Seawater desalination plants, marine pump shafts, and chloride-resistant components) -
Pollution Control & Waste Treatment
(Scrubbers, incinerators, and wastewater treatment systems for corrosive emissions) -
High-Temperature Industrial Furnaces
(Burner nozzles, radiant tubes, and heat treatment fixtures up to 1093°C)
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Q&A for Hastelloy C276 Rod
Q1: What are the key chemical components of Hastelloy C276 rods?
A: Hastelloy C276 rods primarily consist of Ni (balance), Cr (14.5–16.5%), Mo (15–17%), Fe (4–7%), and W (3–4.5%), with minimal impurities like C (≤0.01%) and Si (≤0.08%)
Q2: What is the typical tensile strength of Hastelloy C276 rods?
A: The tensile strength ranges from 690–760 MPa (room temperature, annealed condition), with yield strength 283–350 MPa, ensuring high mechanical stress resistance
Q3: Which industries commonly use Hastelloy C276 rods?
A: Key applications include chemical processing, flue gas desulfurization (FGD), oil & gas, nuclear engineering, and marine systems due to corrosion resistance in acidic/chloride environments
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