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US 2012/0070329 A1Published application
Ferritic martensitic iron based alloy, a component and a process
OwnerTorsten-Ulf Kern, Karsten Kolk +1inventors
InventorsTorsten-Ulf Kern, Karsten Kolk, Thorsten Rudolf
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Abstract
A novel ferritic martensitic alloy is provided. The ferritic martensitic alloy enables the use temperature to be increased from 500° C. to 550° C., where the strength is maintained or is even maximized and the toughness, especially for low temperatures, is maintained compared to the known iron-based alloys. Tunsten is preferably not used.
Claims21
1-33. (canceled)
An iron-based alloy, comprising (in % by weight):
- carbon 0.13-0.22;
- chromium 9.0-9.8;
- molybdenum 1.0-2.0;
- nickel 0.3-0.8;
- vanadium 0.25-0.35;
- aluminum 0.005-0.01;
- niobium 0.04-0.06;
- boron 20 ppm-70 ppm;
- nitrogen 150 ppm-500 ppm;
- cobalt 0-1.5;
- manganese 0-0.15;
- silicon 0-0.1;
- phosphorus 0-0.005;
- sulfur 0-0.003;
- arsenic 0-0.015;
- tin 0-0.015;
- antimony 0-0.015;
- copper 0-0.1;
- and
- remainder iron.
17 more elements
Dependencies are inferred from the claim text.