Hastelloy C276 Plates UNS N10276 Precision Rolled Sheets for Acid and Chloride Service

Overview

Hastelloy C276 Plates are nickel‑molybdenum‑chromium superalloy sheets engineered for the harshest corrosive and high‑temperature environments. Featuring exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in oxidizing and reducing media, these plates maintain mechanical integrity from cryogenic temperatures up to 650 °C. Precision hot‑rolled and cold‑worked to tight tolerances, Hastelloy C276 Plates deliver superior creep‑rupture strength, excellent weldability, and formability. They conform to stringent standards (ASTM B575/ASME SB575, UNS N10276, NACE MR‑01‑75, DIN 2.4819), making them ideal for chemical processing, pollution control, oil & gas, marine, and nuclear applications across South Asia, Southeast Asia, the Middle East, Europe, and the Americas.

Hastelloy C276 Plates Description

Hastelloy C276 Plates are premium nickel‑based alloy sheets combining high levels of molybdenum and chromium with balanced tungsten and iron to resist both oxidizing and reducing corrosion media. With molybdenum (15–17 wt %) and chromium (14.5–16.5 wt %) for pitting and crevice‑corrosion protection, and tungsten (3–4.5 wt %) for enhanced chloride‑stress‑corrosion resistance, these plates excel in acid‑chloride environments. Low carbon content (< 0.01 wt %) minimizes carbide precipitation during welding, ensuring ductility and toughness in critical assemblies. Precision hot‑rolling followed by annealing and optional cold‑working yields sheets with uniform microstructure, tight thickness tolerances, and smooth surface finishes. Designed for service temperatures from −269 °C to 650 °C, Hastelloy C276 Plates deliver unmatched performance in heat exchangers, reactor panels, exhaust scrubbers, and wastewater treatment equipment.

Chemical Composition

Mechanical Properties

Physical Parameters & Execution Standards

Applications

• Chemical Processing: Reactor panels, piping linings, acid condensers

• Pollution Control: Flue‑gas desulfurization, scrubber components

• Oil & Gas: Offshore piping, topside equipment

• Marine & Seawater: Heat exchangers, pump housings

• Waste Treatment: Acid waste tanks, evaporator plates

• Pulp & Paper: Bleaching digesters, chlorine oxide cells

• Nuclear Fuel Reprocessing: Separation vessels, piping

FAQs

Q1: What makes Hastelloy C276 Plates ideal for mixed‑acid environments?
The combination of high molybdenum and chromium resists pitting and crevice corrosion, while tungsten enhances stress‑corrosion cracking resistance in chlorinated acids. Low carbon content prevents intergranular attack after welding.

Q2: Up to what temperature can Hastelloy C276 Plates be used?
They perform continuously in temperatures from −269 °C up to 650 °C, with intermittent exposure up to 816 °C. Elevated‑temperature strength is maintained via solid‑solution strengthening.

Q3: How should Hastelloy C276 Plates be fabricated and joined?
Standard TIG, MIG, and plasma arc welding with matching electrodes yield crack‑free joints. Plates can be hot‑formed above 950 °C and cold‑worked to final gauges, followed by solution annealing to restore ductility.