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Hastelloy C 276 Sheet & Plate

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Hastelloy C-276 Sheet & Plate (UNS N10276)

Hastelloy C-276 is a versatile nickel-molybdenum-chromium alloy renowned for its exceptional resistance to corrosion in severe environments. Available in sheet and plate forms, it is a preferred material for industries dealing with aggressive chemicals, high temperatures, and harsh operating conditions.

 

Key Features of Hastelloy C-276 Sheet & Plate

  1. Corrosion Resistance: Hastelloy C-276 exhibits excellent resistance to a wide range of corrosive media, including strong oxidizers, reducing agents, and localized corrosion like pitting and stress corrosion cracking.
  2. High-Temperature Stability: It performs reliably at elevated temperatures, maintaining its strength and resistance to oxidation and scaling.
  3. Fabrication Versatility: The material is easy to weld and fabricate, allowing for customized designs in industrial applications.
  4. Resistance to Chemicals: With exceptional resistance to strong acids such as sulfuric, hydrochloric, and phosphoric acids, it is ideal for chemical processing.

 

Technical Specifications:

  • UNS Number: N10276
  • W.Nr: 2.4819

Available Thickness

3/16″1/4″3/8″1/2″5/8″3/4″
4.8mm6.3mm9.5mm12.7mm15.9mm19mm
1″1 1/4″1 1/2″1 3/4″2″2 1/2″
25.4mm31.8mm38.1mm44.5mm50.8mm63.5mm
hastelloy-c-276-sheet-plate

Application

  • Automotive
  • Chemical and Pharmaceutical
  • Fertilizer
  • Food Processing and Handling
  • Manufacturing
  • Mining
  • Oil & Gas
  • Phosphate Mining

Standard

  • ASTM A240 / A240M
  • ASTM A276 / A276M
  • ASTM A312 / A312M
  • ISO 15510
  • EN 10088-2
  • IN 10204
  • HE G4304
  • HE G4305
  • ASME SA240 / SA240M

Worldwide Equivalent Grades of Hastelloy C - 276

Country/RegionStandardEquivalent Grade
United StatesUNSN10276
United StatesASTMB575, B619, B622, B626
GermanyDIN2.4819
InternationalISO2.4819
JapanJISN10276
FranceAFNORNC 276
United KingdomBSNA 13
RussiaGOST20KhN60MBT
United StatesASMESB-575, SB-619, SB-622, SB-626
South AfricaSABS2.4819

Hastelloy C276 Corrosion Resistance

  • Oxidizing Environments: Hastelloy C-276 offers excellent resistance to oxidizing environments, including nitric acid and other oxidizing acids. Its high chromium content contributes to this resistance by forming a protective oxide layer.
  • Reducing Environments: It also performs exceptionally well in reducing acids such as hydrochloric acid and sulfuric acid, thanks to its high molybdenum content, which enhances its resistance to pitting and crevice corrosion.
  • Chloride Environments: Hastelloy C-276 is highly resistant to chloride-induced corrosion, including stress corrosion cracking and pitting. This makes it suitable for use in seawater, brine solutions, and other chloride-containing environments.
  • Sulfuric Acid: The alloy is particularly resistant to sulfuric acid, even at elevated temperatures and concentrations. This is due to its ability to withstand both oxidation and reduction processes in sulfuric acid solutions.
  • Acetic Acid: Hastelloy C-276 performs well in acetic acid, including in environments where acetic acid is combined with oxidizing agents.

Hastelloy C276 Chemical Composition

ElementComposition (%)
Nickel (Ni)57.0 – 63.0
Chromium (Cr)14.5 – 16.5
Molybdenum (Mo)15.0 – 17.0
Iron (Fe)≤ 6.0
Tungsten (W)≤ 4.0
Cobalt (Co)≤ 2.5
Manganese (Mn)≤ 1.0
Silicon (Si)≤ 0.08
Carbon (C)≤ 0.01
Phosphorus (P)≤ 0.04
Sulfur (S)≤ 0.03

Hastelloy C276 Physical Properties

PropertyValue
Density~8.89 g/cm³
Melting Point1370 – 1425°C
Thermal Conductivity~10.4 W/m·K
Electrical Resistivity~1.40 µΩ·cm

Hastelloy C276 Mehcanical Properties

PropertyValue
Yield Strength (0.2% Offset)~ 276 MPa (40 ksi)
Tensile Strength~ 690 MPa (100 ksi)
Elongation (in 50 mm)~ 50%
Hardness (Rockwell B)~ 90 HRB

Fabrication Data

  • Welding: Hastelloy C-276 can be welded using various techniques, including TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding. It is important to use filler materials compatible with the alloy to maintain corrosion resistance.
  • Machining: It is relatively challenging to machine due to its hardness and tendency to work harden. Using carbide tools and slow cutting speeds can improve machinability.
  • Heat Treatment: Generally, Hastelloy C-276 does not require heat treatment for hardness or strength. However, it can be solution annealed at approximately 1150°C (2100°F) to improve corrosion resistance.
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