253MA

┃Material

253MA, UNS S30815, W.Nr. 1.4835

Note that the designation “253MA®” is registered trademarks of theOutokumpu.

┃ Overview

253MA is a grade combining excellent service properties at high temperatures with ease of fabrication. It resists oxidation at temperatures up to 1150°C and can provide superior service to grade 310 in carbon, nitrogen and sulphur containing atmospheres. Compared to high nickel alloys and to grade 310, 253MA stainless steel contains fairly low nickel content, which gives it some advantage in reducing sulphide atmospheres. Also, the inclusion of high silicon, nitrogen and cerium contents gives the steel good oxide stability, elevated temperature strength and excellent resistance to sigma phase precipitation.The austenitic structure gives this grade excellent toughness, even down to cryogenic temperatures.

┃ Chemical Composition (%)

┃ Mechanical Property

┃ Application

Power Generation: Boiler tubes, superheaters, and reheaters

Furnace Components: Radiant tubes, muffles, and retorts

Chemical Processing: Reactors, kilns, and incinerators

Automotive and Industrial Applications: Exhaust system

Refractory Anchors: Secure refractory linings in high-temperature furnaces and kilns

┃Corrosion Resistance

253MA stainless steel offers excellent resistance to high temperature corrosion. Although, the material is not designed for aqueous corrosion resistance the high chromium and nitrogen contents give the grade a pitting resistance approximating that of 316. However, 253MA material have a high carbon content so is highly susceptible to sensitisation from welding or service exposure, this is likely to reduce aqueous corrosion resistance after high temperature service or fabrication, its not intended for applications exposed to wet corrosion.

┃Machining

Same as other austenitic stainless steels, the machining of 253MA material requires sharp tools, slow speeds and heavy feeds.

┃Welding

253MA stainless steel provides excellent weldability and supports all standard fusion methods. When matching filler metals is required, consider 22.12HT rods or electrodes. If lower creep strength can be tolerated, grade 309 fillers can be used.

┃ Product Forms

Ø Bar & Rod

Ø Plate & Sheet

Ø Coil & Strip

Ø Pipe & Tube

Ø Fitting: Flange, Tee, Elbow, Reducer etc.

Ø Forging: Ring, Shaft, Circle, Block etc.

┃ Note

Ronsco is a supplier with more than 27 years of experience in the stainless steel and nickel alloy field, we always adheres to the business phiosophy of "customer-centered", tries its best to meet the requirements of customers and pursues win-win cooperation with customers. Are you looking for metal products one-stop supplier! Contact Us Now! Email: service@ronsteel.com