36NiCrMo16
1.6773Ultra-high-strength nickel-chromium-molybdenum QT steel. 4% Ni gives exceptional deep hardenability — air-hardening up to 90mm, through-hardening up to 300mm. UTS 1100-1300 MPa QT with good toughness. White-spot sensitive — dehydrogenation after forging mandatory. French designation 35NCD16. Used for landing gear, aerospace structural parts, heavy-duty shafts, racing components, and mining/construction equipment.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | 36NiCrMo16 / 1.6773 | 1.6773 | 100% |
| 🇫🇷 | AFNOR | France | 35NCD16 | — | 100% |
Sources: EN 10083-3, AIR 9160/C
Chemical composition comparison (wt%)
Side-by-side: 36NiCrMo16 (EN 10083-3) vs 36NiCrMo16 / 1.6773 (EN) (EN 10083-3)
| Element | 36NiCrMo16 (EN 10083-3) | 36NiCrMo16 / 1.6773 (EN) | Overlap |
|---|---|---|---|
| C | — | 0.32–0.39% | — |
| Si | — | 0–0.4% | — |
Mechanical properties
Compatibility verdict
36NiCrMo16 and 36NiCrMo16 / 1.6773: 100% composition match
Related materials
42CrMo4
1.7225High-strength quenched and tempered chromium-molybdenum steel. Widely used for shafts, gears, crankshafts, connecting rods, and high-strength bolts. Excellent hardenability and good fatigue resistance.
34CrNiMo6
1.6582High-strength quenched and tempered Cr-Ni-Mo steel. Excellent hardenability and toughness, suitable for large cross-sections. Used for heavy-duty shafts, gears, turbine parts, and aerospace components.
16MnCr5
1.7131Low-carbon case-hardening steel with manganese and chromium. Excellent for carburizing to produce a hard, wear-resistant surface with a tough core. Standard choice for gears, camshafts, piston pins, and transmission components.
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