1. Aerospace series. Steel 31Ni10. 1 230 MPa ≤ Rm ≤ 1 420 MPa. Bars. De ≤ 40 mm. (21st October 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗