Application Segments

Oil & Gas/CPI

Melting Route


Product Description

BÖHLER A965SA is an austenitic stainless steel alloy with 6% molybdenum and nitrogen. It has very high resistance to crevice and surface corrosion and was specially developed for the requirements of the chemical industry, the pulp and paper industry and the oil/gas industry. Due to its PREN value of over 40, the material is particularly resistant to seawater and is therefore often used in offshore technology.
Furthermore, BÖHLER A965SA is resistant to intergranular corrosion up to 400°C. The required surface finish is pickled, scale-free heat treated or machined.
For applications in highly corrosive environments due to chemically aggressive media, e.g. for equipment and installations cooled with seawater and parts for offshore installations. In the chemical industry, where resistance to attack by pure acids as well as chloride ion-containing acids (especially sulphuric acid), organic acids and mixed acids in the higher pressure and temperature range is required. The increased resistance to crevice corrosion also allows the use where incrustations must be expected and / or where the formation of crevices cannot be avoided by constructive measures.

Property Features

Austenitic chromium-nickel-molybdenium stainless steel with excellent resistance to stress corrosion cracking, pitting and crevice corrosion. Resistant to intergranular corrosion in the temperature range up to 400°C (752°F). For optimum resistance, surfaces should be pickled, scalefree heat treated or machined.

Technical Specifications

Material Numbers

1.4547 S31254 F44 254SMO


10088-3 A182/A182M A276/A276M A479/A479M MDS R17

Chemical Composition

max. 0.020 max. 0.80 max. 1.00 max. 0.030 max. 0.010 19.5 to 20.5 6.0 to 6.5 17.5 to 18.5 0.50 to 1.00 0.18 to 0.25

Chemical composition (average %)

Available product shapes

  • Long Products
  • Plates
  • Semi-Finished Products / Billet



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