Hastelloy C276 (UNS N10276) is a high-performance nickel-molybdenum-chromium alloy renowned for its exceptional corrosion resistance in the most demanding environments. Engineered to withstand aggressive chemical media, Hastelloy C276 plate maintains its structural integrity and mechanical strength even under extreme thermal stress.

Key Features and Performance

• Superior Corrosion Resistance: Specifically designed to resist pitting, stress-corrosion cracking, and oxidizing atmospheres up to 1900°F.

• High-Temperature Stability: Unlike standard alloys, C276 maintains excellent ductility and high yield strength at elevated temperatures.

• Versatile Weldability: The alloy can be easily joined using various welding techniques (GTAW, GMAW, and SMAW) without compromising its anti-corrosion properties.

• Specialized Manufacturing: Due to its unique metallurgical composition, C276 requires professional-grade equipment and advanced processing technology to ensure precision and quality.

Primary Industrial Applications

Thanks to its robust performance, Hastelloy C276 is a critical material in several high-stakes industries:

• Chemical Processing: Ideal for reactors, heat exchangers, and evaporators handling mixed acids.

• Petroleum & Gas: Used in sour gas environments and offshore drilling components.

• Marine Engineering: Exceptional resistance to seawater corrosion and brine solutions.

• Pollution Control: Essential for flue gas desulfurization (FGD) systems.

  
  

Hastelloy Alloy Comparison: C-276, C-22, B-3, and X

1. Chemical Composition (Nominal Weight %)

This table illustrates the unique metallurgical profiles of different Hastelloy grades, highlighting the balance of Nickel, Chromium, and Molybdenum.

2. Mechanical & Physical Properties (Typical Values)

3. Application & Corrosion Resistance Guide

Each grade is optimized for specific industrial challenges. Choosing the right one ensures longevity and safety.

• Hastelloy C-276: The "Workhorse." Best for mixed acid environments, flue gas desulfurization (FGD), and pulp/paper production.

• Hastelloy C-22: Superior resistance to oxidizing aqueous media and better thermal stability during welding than C-276.

• Hastelloy B-3: Specifically engineered for Hydrochloric Acid (HCl) at all concentrations and temperatures. It has improved thermal stability over B-2.

• Hastelloy X: Known for excellent oxidation resistance and strength at high temperatures (up to 1200°C). Ideal for gas turbines and furnace parts.

• Hastelloy C-2000: The most versatile alloy for mixed acid systems containing both oxidizing and reducing agents.