Back to results
US 2019/0169722 A1Published application
Martensitic steel having a z-phase, powder and component
AssigneeSiemens Aktiengesellschaft
InventorsTorsten Neddemeyer, Torsten-Ulf Kern, Axel Bublitz, Karsten Kolk
Life of this patent
Estimating the term…
Abstract
A steel having the following composition: carbon: 0.08%-0.12%, preferably 0.10%; silicon: 0.04%-0.08%; manganese: 0.08%-0.012%; chromium: 9%-II%; molybdenum: 0.4%-1.0%; tungsten: 1.6%-2.4%; cobalt: 2.5%-3.5%; nickel: 0.10%-0.24%; boron: 0.006%-0.01%; nitrogen: 0.002%-0.01%; titanium: 0.008%-0.03%; vanadium: 0.015%-0.029%; niobium: 0.03%-0.07%; optionally copper: 1.00%-2.5%; aluminum: 0.04%-0.10%; the remainder being iron, wherein said steel has improved properties, since no further Z-phase formation occurs.
Claims11
An alloy comprising at least (in % by weight):
- carbon (C):
- 0.08%-0.12%,
- silicon (Si):
- 0.04%-0.08%,
- manganese (Mn):
- 0.08%-0.12%,
- chromium (Cr):
- 9%-11%,
- molybdenum (Mo):
- 0.4%-1.0%,
- tungsten (W):
- 1.6%-2.4%,
- cobalt (Co):
- 2.5%-3.5%,
- nickel (Ni):
- 0.10%-0.25%,
- boron (B):
- 0.006%-0.01%,
- nitrogen (N):
- 0.002%-0.01%,
- titanium (Ti):
- 0.008%-0.03%,
- vanadium (V):
- 0.15%-0.25%,
- niobium (Nb):
- 0.03%-0.07%,
- optionally
- copper (Cu):
- 1.25%-2.25%,
- aluminum (Al):
- 0.04%-0.10%, and
- balance iron (Fe),
29 more elements
Dependencies are inferred from the claim text.