Application Segments

Oil & Gas/CPI

Melting Route


Product Description

Böhler A970 is a stainless austenitic CrNiMoCu steel with excellent resistance to pitting, crevice and stress corrosion cracking. It is also resistant to intergranular corrosion up to 400°C. Required surface finish pickled, scale-free heat treated or machined.
For components subjected to highly corrosive conditions, e.g. in seawater-cooled plants and in offshore applications. In areas of the chemical industry where, at higher pressures and temperatures, there is exposure to pure acids as well as acids containing chlorine ions (especially sulphuric acid), organic acids and acid mixtures. Due to the increased resistance to crevice corrosion, it can also be used wherever the formation of deposits is to be expected or where crevices cannot be prevented by constructive measures.

Property Features

Austenitic Cr-Ni-Mo-Cu-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

1.4529 X1NiCrMoCuN25-20-7 N08926

Chemical Composition

Chemical composition (average %)
max. 0.020 max. 0.5 max. 2.00 max. 0.03 max. 0.01 19.00 to 21.00 6.0 to 7.0 24.00 to 26.00 0.5 to 1.5 REM 0.15 to 0.25

Available product shapes

Information on Long Products ) Presented data refer exclusively to long products. Please observe the detailed explanations at the end of the data sheet (pdf).

  • Long Products
  • Plates


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