420 303 302 Cold Drawn Stainless Steel Round Bar 6mm 5mm 4mm 8mm 9mm 253MA 254SMO

253 MA is an austenitic, chromium-nickel stainless steel alloyed with nitrogen and reactive elements and suitable for a wide range of high-temperature applications, such as recuperators in steel mills and PCI lances for blast furnaces.
The grade provides excellent performance for example, in environments with isothermal and cyclic oxidation, carburizing atmospheres and different combustion and flue gases as well as in salt and metal melts. 253 MA can be used at temperatures up to 1150°C (2100°F), depending on the service parameters and application.Very good resistance to cyclic oxidation combined with high mechanical strength 253 MA has very high resistance to oxidation, especially under cyclic conditions, due to the addition of reactive elements, such as cerium (Ce). The high mechanical strength of 253 MA allows for thinner tube wall constructions compared with using materials of the ASTM 310 type. Despite the material's high strength, ductility is not reduced, and good formability is maintained.