Alloy В91 (1913)
Designation
Description
Alloy В91 used: for the production of sheets, extruded sections and forgings; parts aircraft, including seaplanes and wig; building structures.
Note
Corrosion resistant weldable heat-treatable alloy with high strength welded joints (σto20° > 450 MPa, σ0,220° > 350 MPa, σV. SV = 0.9 σin).
Standards
Chemical composition
Al is the base.
According to OST 1 90048-90 the total mass fraction of other impurities is ≤ 0.10%. In the alloy, chromium can be replaced with zirconium in an amount of 0.10-0.20%.
According to OST 1 90048-90 the total mass fraction of other impurities is ≤ 0.10%. In the alloy, chromium can be replaced with zirconium in an amount of 0.10-0.20%.