Nickel-base alloy
AssigneeMetallgesellschaft Aktiengesellschaft
InventorsGerhard Kruske, Otto Knotek, Erich Lugscheider
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Abstract
A nickel-base alloy which is resistant to corrosion, abrasion, erosion, cavitation and temperature cycles and possesses a high high-temperature strength, consisting essentially of the following composition in percent by weight: Carbon: 0.5 to 5 Tungsten: 2 to 15 Chromium: 25 to 55 Boron: 0.5 to 3.5 Phosphorus: 0.5 to 4.5 Silicon: 1 to 5 Iron: 1 to 5 Nickel: balance and meets the following boundary conditions: (a) percent by weight C=percent by weight C.sub.1 =percent by weight C.sub.2 +0.2; (b) percent by weight W=36.times.percent by weight C.sub.1 ; and (c) percent by weight Cr.gtoreq.17+9.times.percent by weight C.sub.2 -4.times.percent by weight C.
Claims4
A nickel-base alloy which is resistant to corrosion, abrasion, erosion, cavitation and temperature cycles and possesses a high high-temperature strength, consisting essentially of the following composition in percent by weight:
- Carbon:
- 0.5 to 5
- Tungsten:
- 2 to 15
- Chromium:
- 25 to 55
- Boron:
- 0.5 to 3.5
- Phosphorus:
- 0.5 to 4.5
- Silicon:
- 1 to 5
- Iron:
- 1 to 5
- Nickel:
- balance
- and meets the following boundary conditions:
- (a) percent by weight C=percent by weight C.sub.1 =percent by weight C.sub.2 +0.2;
- (b) percent by weight W=36.times.percent by weight C.sub.1 ;
- (c) percent by weight Cr.gtoreq.17+9.times.percent by weight C.sub.2 -4.times.percent by weight C.
Dependencies are inferred from the claim text.