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.

  • UNS Number: S30815
  • Werkstoff Number: 1.4835
  • ASTM: A182, A240, A276, A312, A479

Product availability

Pipe (Seamless)
Round Bar
Welding Wire

Chemical analysis



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

About 253 MA®

Despite its lean nickel content, 253 MA® alloy 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.

253 MA® is the registered trademark of Outokumpu Stainless.

Contact us for more information on 253 MA® alloy!

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

Mechanical & Physical Properties

Mechanical & Physical Properties21⁰C93⁰C204⁰C316⁰C427⁰C538⁰C593⁰C649⁰C704⁰C760⁰C816⁰C871⁰C927⁰C982⁰C1038⁰C1093⁰C
Minimum Creep 0.0001% per hr (Ksi)------

Mechanical Properties for 253 MA®

Mechanical Properties50⁰C100⁰C200⁰C300⁰C400⁰C500⁰C600⁰C700⁰C800⁰C850⁰C900⁰C
Ultimate Tensile Strength/ MPa663.3621.9577.8568.1549.5522475.7386.1388.9254.4171
0.2% Yield Strength / MPa304.8271222202200.6173.1166.9158.6148.2100.780
Reduction of area / %5148464646444344---
Elongation / %6865656460626358768892
Proud members of the British Valve & Actuator AssociationProud members of the British Valve & Actuator Association