Specification for 2.5% nickel-chromium-molybdenum (high carbon) steel billets, bars, forgings and parts (1230-1420 MPa: limiting ruling section 150 mm)
This standard specifies characteristics of a nickel-chromium-molybdenum steel supplied in the following forms, and as parts, for general aerospace use:
forging stock, designation S99A;
forgings: softened, designation S99C;
forgings: hardened and tempered, designation S99F;
black bars for machining: softened, designation S99B;
black bars for machining: hardened and tempered, designation S99E;
bright bars for machining: softened, designation S99D;
bright bars for machining: hardened and tempered, designation S99G.
| SDO | BSI: British Standards Institution |
| Document Number | 5S 99 |
| Publication Date | April 30, 2015 |
| Language | en - English |
| Page Count | |
| Revision Level | 1 |
| Supercedes | |
| Committee | ACE/61/-/15 |
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