ThePipingMart Blog Products Hastelloy C276 Round Bars – Composition, Properties and Uses

Hastelloy C276 Round Bars – Composition, Properties and Uses

Hastelloy C276 Bars - Composition Properties And Uses

Hastelloy C276 is a popular nickel-based alloy with excellent corrosion resistance properties. It’s widely used in several industries, such as oil and gas, chemical processing, and marine engineering. Among the many forms in which Hastelloy C276 is available, Hastelloy C276 bars are widely used due to their favourable mechanical properties. This blog post will explore the composition, physical and mechanical properties, heat treatment, corrosion resistance, and uses of Alloy C276 Bar.


Hastelloy C276 Bars Composition

The composition of Hastelloy C276 Round bars varies depending on the process used to manufacture them. Generally, Hastelloy C276 bars consist of 14.5-16.5% chromium, 15-17% molybdenum, 4-7% tungsten, 0.04-0.5% carbon, and 5-7% iron. Hastelloy C276 bars are also alloyed with small quantities of nickel, manganese, silicon, sulfur, copper, and phosphorus. The specific composition of Hastelloy C276 bars can be adjusted to achieve different corrosion resistance properties and mechanical strength.

Grade C Mn Si S Co Ni Cr Fe Mo P
Hastelly C276 0.010 max 1.00 max 0.08 max 0.03 max 2.50 max 50.99 min* 14.50 – 16.50 15.00 – 17.00 0.04 max 4.00 – 7.00

Hastelloy C276 Bars Physical Properties

Alloy C276 Bar have excellent physical properties that suit harsh environments. They have a density of 8.89 g/cm³ and a melting point of 1370-1400°C. The thermal conductivity of Alloy C276 Round bars is about 10.1 W/m·K, and their electrical conductivity is about 27.6%IACS. Hastelloy C276 bars also have a low coefficient of thermal expansion, making them resistant to thermal shock.

Grade Density (g/cm3) Melting Point °C Co-eff of Thermal Expansion (μm/m/°C) Thermal Conductivity (W/m.K) Specific Heat ( J/Kg.K)
Hastelloy C-276 8.89 1371 24-93°C 7.2 0-100°C
11.2 727

Hastelloy C276 Bars Mechanical Properties

Alloy C276 Round Bar have excellent mechanical properties, which make them resistant to stress and corrosion cracking. They have a tensile strength of 105 ksi and a yield strength of 45 ksi. The bars have a Rockwell hardness rating of 92, making them highly durable. Hastelloy c276 square bar have excellent elasticity, making them suitable for high-temperature environments.

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Hastelloy C276 8.89 g/cm3 1370 °C (2500 °F) Psi – 1,15,000 , MPa – 790 Psi – 52,000 , MPa – 355 40 %

Hastelloy C276 Bars Equivalent

Hastelloy C276 2.4819 N10276 NW 0276 NiMo16Cr15W ЭП760 ХН65МВУ

Hastelloy C276 Bars Heat Treatment

Hastelloy c276 hex bar can be heat treated to enhance their mechanical properties. The heat treatment involves annealing the bars at 1090°C for 15 minutes. This process increases the tensile strength and corrosion resistance properties of the bars. The bars are then rapidly cooled in water to prevent grain growth and maintain their mechanical properties.

Hastelloy C276 Bars Corrosion Resistance

One of the critical features of ASTM B574 UNS N10276 bar is their excellent corrosion resistance properties. The bars are highly resistant to stress corrosion, cracking, and pitting. Hastelloy C276 bars can withstand harsh chemicals such as sulfuric acid, hydrochloric acid, and chlorine gas. They also exhibit excellent resistance to seawater and other salty environments, making them suitable for marine engineering applications.

Hastelloy C276 Bars Uses

Hastelloy c276 flat bar have a wide range of uses in various industries. They are used in chemical processing, which involves handling corrosive chemicals at high temperatures and pressures. They are also used in the oil and gas industry for valves, pumps, and heat exchangers. Hastelloy C276 bars are used in marine engineering for applications such as propeller shafts and seawater piping systems. Other uses of Hastelloy C276 bars include pollution control equipment, pharmaceutical manufacturing, and food processing.



In conclusion, UNS N10276 Hastelloy C276 Hex Bar are widely used in several industries due to their excellent corrosion resistance, mechanical properties, and heat resistance. Their physical and mechanical properties, including their composition, make them resistant to stress and corrosion cracking, enabling them to withstand harsh environments. The bars undergo heat treatment to enhance their mechanical properties, making them highly durable. Due to their excellent corrosion resistance properties and durability, Hastelloy C276 bars have various uses in various industries.

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