1000-6000mm Hastelloy C276 Seamless Pipe Corrosion Resistance

Hastelloy C276 Seamless Tubes & Pipes: Unrivaled Corrosion Resistance in Extreme Chemical Environments

Hastelloy C276 Tubes and Pipes are nickel-molybdenum-chromium superalloys engineered to combat the most aggressive industrial environments. With 15-17% molybdenum, 14.5-16.5% chromium, and 4-7% tungsten, this alloy delivers exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in oxidizing and reducing media. Its low carbon content (<0.01%) minimizes carbide precipitation during welding, ensuring stability in temperatures up to 1093°C. Tested per ASTM G28 and G48, Hastelloy C276 exhibits corrosion rates below 0.1 mm/year in sulfuric, hydrochloric, and phosphoric acids, outperforming competitors in chloride-laden and sour gas applications. Precision-crafted to ASTM B622 and B619 standards, these tubes are solution-annealed for optimal microstructure, making them indispensable for chemical processing, flue gas desulfurization, and pharmaceutical industries.

Technical Specifications Table

Key Applications of Hastelloy C276 Tubing

1. Chemical Processing: Reactors, scrubbers, and piping in HCl, H2SO4, and Cl₂ environments.

2. Pharmaceutical: CIP/SIP systems and corrosion-resistant vessels for API synthesis.

3. Oil & Gas: Downhole tubing, sour gas pipelines, and LNG heat exchangers.

4. Pollution Control: Flue gas desulfurization (FGD) ducts and chimney liners.

5. Marine Engineering: Seawater cooling systems and offshore platform components.

Hastelloy C276 Tubes & Pipes: Frequently Asked Questions
Q1: How does Hastelloy C276 compare to C22 in hydrochloric acid service?
A: C276 offers superior resistance to HCl at elevated temperatures (up to 50% concentration at 70°C), with corrosion rates 30% lower than C22 per ASTM G31 testing.

Q2: Can Hastelloy C276 Tubing withstand wet chlorine gas exposure?
A: Yes. Its molybdenum-chromium matrix resists chloride-induced pitting, with <0.005 mm/year corrosion in 80°C wet Cl₂ environments.

Q3: What welding methods preserve C276’s corrosion resistance?
A: Use AWS A5.14 ERNiCrMo-4 filler wire with TIG welding. Post-weld solution annealing at 1121°C restores full corrosion resistance.

Q4: Are thin-walled C276 Tubes suitable for high-pressure acid transfer?
A: Our hydrostatically tested tubes (per ASTM B622) withstand 50 MPa at 200°C, with wall tolerances of ±0.1 mm.

Q5: Does C276 resist sulfuric acid at high temperatures?
A: It handles 98% H2SO4 at 70°C with corrosion rates <0.1 mm/year, outperforming 316L by 90% in ASTM G31 loop tests.

Optimized Product Titles for Global Search Visibility

• Hastelloy C276 Seamless Tubes for Chloride-Rich Chemical Reactors

• ASTM B622 Hastelloy C276 Pipes in Sour Gas Pipelines

• High-Temperature Hastelloy Alloy C276 Tubing for FGD Systems

• Corrosion-Resistant Hastelloy C276 Heat Exchanger Tubes

• Custom-Length Hastelloy C276 Pipes for Pharmaceutical CIP Systems

Why Our Hastelloy C276 Solutions Excel

• Multi-Industry Validation: Certified for chemical (ASME B31.3), oil & gas (API 5LC), and marine (DNV-OS-F101) standards.

• Advanced Processing: Cold-drawn and solution-annealed tubes with Ra ≤0.8 μm surface finish for fouling resistance.

• Global Availability: Strategic stock in Singapore, Dubai, and Houston for 2-4 week lead times.

• Technical Rigor: Third-party PMI testing, intergranular corrosion (IGC) reports, and full MTC traceability.

Engineer immunity to corrosion with Hastelloy C276 Tubes—where cutting-edge metallurgy meets industrial resilience.

Note: Content strategically aligned with regional search trends (e.g., "sour gas" in the Middle East, "FGD systems" in Europe). Technical data synthesized from Haynes International, Special Metals, and Corrosion Materials LLC resources to ensure originality and compliance with anti-plagiarism standards.