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17Cr - 0.52Mo (0.95 - 1.20C) (SAE 51440C), Consumable Electrode Vacuum Melted
BackThis specification covers a premium aircraft-quality corrosion-resistant steel in the form of bars, wire,
forgings, and forging stock.
| Property | Min Value | Max Value |
| N/mmsq 0.2% Yield Strength | 0 | 0 |
| N/mmsq Ultimate Tensile Strength | 0 | 0 |
| % Elongation | 0 | 0 |
| % Reduction of Area | 0 | 0 |
| Hardness Rockwell B (HRB) | 0 | 255 |
| Hardness Rockwell C (HRC) | 0 | 0 |
| Hardness Brinell (BHN) | 0 | 0 |
| Hardness Vickers (HV) | 0 | 0 |
| % Carbon (C) | 0.95 | 1.20 |
| % Chromium (Cr) | 16.00 | 18.00 |
| % Manganese (Mn) | 0 | 1.00 |
| % Molybdenum (Mo) | 0.40 | 0.65 |
| % Nickel (Ni) | 0 | 0.75 |
| % Phosphorus (P) | 0 | 0.020 |
| % Sulphur (S) | 0 | 0.010 |
| % Silicon (Si) | 0 | 1.00 |
| % Iron (Fe) | 76.87 | 82.65 |
| % Copper | 0 | 0.50 |
| % Magnesium | 0 | 0 |
| % Zinc | 0 | 0 |
| % Titanium | 0 | 0 |
| % Aluminium | 0 | 0 |
| % Cobalt (Co) | 0 | 0 |
| % Zirconium (Zr) | 0 | 0 |
| % Boron (B) | 0 | 0 |
| % Lead (Pb) | 0 | 0 |
| % Bismuth (Bi) | 0 | 0 |
| % Selenium (Se) | 0 | 0 |