What is the difference between alloy 20 and alloy c-276?
Alloy C276
Alloy C276 is a low-carbon alloy containing nickel, chromium and molybdenum that provides excellent resistance to corrosion, pitting and cracking, even in harsh conditions. It also has excellent resistance to sulfuric acid, hydrochloric acid and phosphoric acid. The chromium content helps resist oxidants such as copper chloride and ferric chloride, while the tungsten content contributes to overall resistance.
Therefore, C276 is particularly suitable for the harsh environments of the petrochemical, energy production and pharmaceutical industries, where it is used in environments containing chloride ions, chlorine dioxide, organic acids and seawater.
Processing performance
Alloy C276 is a versatile metal suitable for a variety of CNC and manual machining methods. The alloy has excellent resistance to carbide precipitation during welding and maintains corrosion resistance in the heat-affected zone of the welded joint.
Application areas
Common applications for C276 include flue gas desulfurization units, fans, ducts, valves, chimney liners and casings. The alloy is used in reaction chambers, heat exchangers, valves, pipes and pumps in food processing, pharmaceutical and chemical processing.
supply
We stock Alloy C276 rods in diameters from 19.05mm to 152.4mm and other sizes outside this range can be obtained quickly.
Alloy 20
Alloy 20 is an austenitic nickel alloy designed to provide high levels of resistance to sulfuric and nitric acids, making it ideal for power generation, pharmaceutical and food processing applications. It has good resistance to corrosion, stress cracking caused by chlorine, and abrasion and impact damage. Alloy 20 has a maximum operating temperature of 986°F/530°C.
Alloy 20 has similar properties to grade 316 stainless steel. It is sometimes used as an alternative to stainless steel in chloride-rich environments - because Alloy 20 has better resistance to chloride-induced corrosion cracking than 316.
Processing performance
Alloy 20 is easier and less expensive to manufacture than Alloy C276. Processing speeds and feed rates are comparable, but the niobium content in Alloy 20 improves the alloy's weldability compared to Alloy C276.
Application areas
Alloy 20 is used in the manufacture of production equipment for pharmaceuticals, food, explosives, chemical processing and petroleum refining. Due to its excellent heat resistance, it is particularly useful in heat exchangers, process piping, mixing tanks and metal cleaning.
