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US 8,007,715 B2Granted
Welding additive material
AssigneeALSTOM Technology Ltd
InventorsMohamed Nazmy, Paul Claus Gerdes, Andreas Kuenzler
Life of this patent
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Abstract
A steel has the following chemical composition (amounts in % by weight): 0.05-0.14 C, 8-13 Cr, 1-2.6 Ni, 0.5-1.9 Mo, 0.5-1.5 Mn, 0.15-0.5 Si, 0.2-0.4 V, 0-0.04 B, 2.1-4.0 Re, 0-0.07 Ta, 0-60 ppm Pd, remainder Fe and unavoidable impurities. The steel can be used effectively as a welding additive material and has outstanding properties at very high temperatures, in particular a good creep rupture strength/resistance and a good oxidation resistance.
Claims17
A steel consisting of a chemical composition in percent by weight:
- 0.05-0.14 C,
- 8-13 Cr,
- 1-2.6 Ni,
- 0.5-1.9 Mo,
- 0.5-1.5 Mn,
- 0.15-0.5 Si,
- 0.2-0.4 V,
- 0-0.04 B,
- 2.1-4.0 Re,
- 0-0.07 Ta,
- 0-max. 60 ppm Pd,
- remainder Fe and unavoidable impurities.
9 more elements
Dependencies are inferred from the claim text.