Alloy C276 Machine Screws

Product Details

Alloy C276 Machine Screws: International Standards, Equivalent Grades and Applications

Alloy C276 machine screws are crucial components in various industries due to their exceptional corrosion resistance, high strength, and versatility.

Alloy C276 Machine Screws: Specifications and Key Features
Alloy C276, also known as Hastelloy C276, is a nickel-molybdenum-chromium alloy renowned for its outstanding resistance to a wide range of corrosive environments. This alloy exhibits superb resistance to pitting, crevice corrosion and stress corrosion cracking in chloride-containing environments, making it ideal for applications in chemical processing, pollution control, pulp and paper production, and more.
Alloy C276 machine screws are manufactured to meet various specifications, including ASTM B574 for bars, rods, and forgings, ASTM B574 for wire, DIN 2.4819, and UNS N10276.
International Standards for Alloy C276 Machine Screws
Alloy C276 machine screws adhere to several international standards to ensure quality, compatibility, and reliability in different applications. Some of the prominent standards include:
ASTM B574/B574M: This standard specifies the requirements for nickel-molybdenum-chromium-iron alloys (UNS N10276, N06022, N06035, N06455, N06058, and N06059) in the form of rod, bar, wire, or forging.
ASTM F468/F468M: ASTM F468/F468M covers the chemical, mechanical, and dimensional requirements for various types of bolts, screws, studs, nuts, and other externally threaded fasteners made from corrosion-resistant nickel-based alloys.
ASME B18.3: ASME B18.3 provides specifications for socket cap, shoulder, set screws, and other threaded fasteners, ensuring dimensional consistency and mechanical properties.
ISO 4014/ISO 4017: These ISO standards specify the dimensions, tolerances, and mechanical properties of hexagon head bolts and screws made of corrosion-resistant alloys, including Alloy C276.

Equivalent Grades of Alloy C276
In addition to its primary designation (UNS N10276), Alloy C276 has equivalent grades in different international standards, ensuring global compatibility and interchangeability. Some of the equivalent grades include:
W.Nr. 2.4819: This Werkstoff Number (W.Nr.) corresponds to Alloy C276 according to the German DIN standard.
EN 2.4819: EN 2.4819 is the European standard equivalent to Alloy C276.
JIS NW 0276: JIS NW 0276 is the Japanese Industrial Standard designation for Alloy C276.
BS NA 49: BS NA 49 is the British Standard equivalent grade for Alloy C276.

Applications of Alloy C276 Machine Screws
Alloy C276 machine screws find extensive applications in industries where corrosion resistance, high strength, and reliability are paramount. Some common applications include:
Chemical Processing: Alloy C276 machine screws are used in reactors, heat exchangers, and pipelines in chemical plants handling corrosive acids, chlorides, and other aggressive chemicals.
Oil and Gas: In oil refineries and offshore platforms, these screws are utilized in valves, pumps, and fittings exposed to corrosive environments containing sulfur compounds and saline solutions.
Pulp and Paper: Alloy C276 machine screws resist corrosion in pulp digesters, bleaching equipment, and paper mill machinery where exposure to chlorine, caustic solutions, and pulp liquors is prevalent.
Pollution Control: In pollution control systems such as scrubbers and stack liners, these screws withstand the corrosive effects of acidic gases, chlorides, and high temperatures.

In conclusion, Alloy C276 machine screws offer exceptional corrosion resistance, mechanical strength, and reliability in demanding industrial environments. Adhering to international standards and available in equivalent grades, these screws cater to a wide range of applications across various sectors, ensuring efficient and durable fastening solutions.