Hastelloy C4

When it comes to a versatile and reliable alloy for harsh environments, Hastelloy C4 is the first choice. Developed by Haynes International in the mid-1960s, this nickel-chromium-molybdenum alloy offers several advantages over other high-performance alloys, making it the first choice for applications where corrosion resistance and temperature stability are critical.

Main Features and Applications

Hastelloy C4 or UNS N06455 is widely used in the chemical processing industry, oil and gas production, and other demanding industrial applications thanks to its resistance to a wide variety of corrosive environments including most types of acids, chlorine dioxide, and seawater excellent resistance. Some of the key properties that distinguish Hastelloy C4 from other high performance alloys are high strength, ductility, uniform corrosion resistance and excellent machinability. This makes it ideal for manufacturing components such as valve bodies, reaction vessels and heat exchangers.

Ingredients and Production Standards

Hastelloy C4 is an austenitic nickel-chromium-molybdenum alloy with a nominal chemical composition of 65% nickel, 17% chromium and 16% molybdenum. It also contains small amounts of iron, cobalt, tungsten and manganese. The alloy meets several production standards, including ASTM B574, ASTM B575, ASTM B619, and ASME SB-574, making it easier for manufacturers to produce and fabricate components to customer specifications.

Production standards also ensure consistency in the properties of the alloy, including its chemical composition, mechanical properties and dimensions. This ensures that parts made from Hastelloy C4 meet the highest standards of quality and performance.

Hastelloy C4 form

Hastelloy C4 is available in a variety of forms including plate, tube, round bar, wire, strip and foil. The availability of these sizes allows the manufacturer to use the alloy in different applications according to the specific needs of the customer. For example, plates are suitable for reactor vessels and heat exchangers, while round rods are suitable for shafts and fasteners.

Mechanical behavior

The mechanical properties of Hastelloy C4 are an important consideration when selecting an alloy for an application. The alloy has excellent strength and toughness, making it suitable for harsh environments where high stress and high temperatures are common. The alloy has an ultimate tensile strength of 100 ksi and a yield strength of 40 ksi. It also has good fatigue resistance, making it ideal for cyclic loading applications.

good processability

Hastelloy C4 has excellent machinability and is easy to form and weld. The alloy can be hot and cold worked, allowing manufacturers to create complex shapes and designs. It also has good ductility, which prevents it from cracking or breaking during the manufacturing process.

chemical properties

Hastelloy C4 has excellent resistance to corrosive agents such as hydrochloric, sulfuric and phosphoric acids. The alloy is also resistant to oxidizing and reducing environments, making it one of the strongest alloys available for use in harsh conditions. The alloy has good resistance to pitting, crevice corrosion and stress corrosion cracking. These properties make it the first choice for applications where corrosion resistance is critical.

in conclusion

Hastelloy C4 or UNS N06455 is a versatile and reliable alloy that can withstand harsh environments, making it the first choice for the chemical processing industry, oil and gas production, and other demanding industrial applications. The alloy’s unique properties, including its outstanding corrosion resistance, strength, ductility, manufacturability and mechanical properties, make it ideal for manufacturers seeking to produce high-quality components for critical applications. ANTON METAL is a leading manufacturer of Hastelloy C4 Plate, Tube, Rod, Wire, Strip and Foil to international production standards such as ASTM and ASME.