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253 MA®

An austenitic Chromium-Nickel-Silicon grade, 253 MA® offers outstanding strength and unrivalled heat resistance.

253 MA® was developed over 30 years ago when the need for a heat resistant stainless steel with high strength and good oxidation resistance was required in the industry.

Inventory

Product FormSize Range FromSize Range To
253 MA® Pipe0.5 in4 in GET A QUOTE
253 MA® Round bar12.7 mm101.6 mm GET A QUOTE
253 MA® Sheet & plate1.6 mm50.8 mm GET A QUOTE
253 MA® Welding wire1.6 mm3.175 mm GET A QUOTE

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Chemical Analysis

%CrNiSiCMnPSNCeFe
Min20101.400.05---0.140.03Balance
Max221220.100.800.040.030.200.08-

Applications

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Perfect for applications in the Thermal Processing industry

253 MA® can be used in a variety of applications, here are just a few examples:

  • Pyrolysis Vessels
  • Boiler Nozzles
  • Corrugated Boxes
  • Cyclones
  • Bar Baskets
  • Radiant Tubes
  • Combustion chambers

About 253 MA®

253 MA® alloy, despite its lean Nickel content offers an outstanding combination of creep strength and high resistance to oxidation, sulphidation and erosion/abrasion at extremely high temperatures. This makes the alloy more economical than most heat resistant alloys.

The high heat resistant properties of 253 MA® are obtained by the tight control of micro alloy additions. Whilst the benefit of creep rupture strength is down to the combination of Nitrogen, Carbon and Cerium, its superior oxidation resistance is a result of the combination of Cerium and Silicon.

 

Contact us for more information on 253 MA® alloy!

 

Properties

Density:
8 g/cm³
Melting Range:
1371-1432 ⁰C
Poisson's Ratio:
0.31

Specifications

UNS Number:
S30815
W.Nr.Number:
1.4835
Standards:
ASTM A182, A240, A276, A312, A479
Download the 253 MA® Data Sheet Download

FAQs & Resources

Due to having twice the creep strength of alloy 309/309S and alloy 310S, 253 MA® is preferred in many Circulating Fluidized Bed (CFB) power boilers for cyclones operating above 871°c.

253 MA® is preferred. Nitrogen, carbon and to some extent, rare earth and alkali metal oxides, combine to provide creep rupture strength superior to other heat resistant stainless steels which enhances the alloys performance when thermal shock is a concern.

Yes, alloys used to fabricate impellers for fan applications operating at elevated temperatures are selected for their oxidation resistance at elevated temperatures, high temperature strength, thermal fatigue resistance and high temperature creep properties.

253 MA® obtains its heat resistant properties by advanced control of micro alloying additions. The use of rare earth metals in combination with silicon gives superior oxidation resistance up to 1094°C.

Request a Quote

Fill in our online form to get a fast quote. Got a technical question? Contact us on techsales@neonickel.com or for more general enquiries please email us at enquiries@neonickel.com