BRITISH STANDARD SPECIFICATION FOR AIRCRAFT MATERIAL 5/2 PER CENT NICKEL-CHROMIUM-MOLYBDENUM STEEL (HIGH CARBON)
1. Inspection and testing procedure.
2. Process of manufacture.
3. Chemical composition.
4. Surface dressing.
5. Condition.
6. Final heat treatment.
7. Mechanical properties.
BS 2S 98:1964 history
2014BS 3S 98:2014 Specification for 2.5% nickel-chromium-molybdenum (high carbon) steel billets, bars, forging and parts (1 160 - 1 310 MPa: limiting ruling section 155 mm)
1964BS 2S 98:1964 Specification for aircraft material - 21/2 per cent nickel-chromium-molybdenum steel (high carbon) (75/85 tonf/sq in: limited ruling section 6 in)