Granted Patent
B2
US 9,551,051 · App. 13/940,831 · Granted Jan 24, 2017
Weldable oxidation resistant nickel-iron-chromium aluminum alloy
Inventors:
Dwaine L. Klarstrom (Kokomo, IN); Steven J. Matthews (Greentown, IN); Venkat R. Ishwar (Carmel, IN)
Assignee:
Haynes International, Inc.
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Abstract
A weldable, high temperature oxidation resistant alloy with low solidification crack sensitivity and good resistance to strain age cracking. The alloy contains by weight percent, 25% to 32% iron, 18% to 25% chromium, 3.0% to 4.5% aluminum, 0.2% to 0.6% titanium, 0.2% to 0.43% silicon, up to 0.5% manganese and the balance nickel plus impurities. The Al+Ti content should be between 3.4 and 4.2 and the Cr/Al ratio should be from about 4.5 to 8.
Claims (1)
1. A weldable, high temperature oxidation resistant alloy comprising in weight percent 27.5% iron, 20% chromium, 3.75% aluminum, 0.25% titanium, 0.05% carbon, 0.3% silicon, 0.25% manganese and the balance nickel plus impurities.
Assignments (3)
RELEASE OF SECURITY INTEREST
Recorded Nov 21, 2024
From: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: HAYNES INTERNATIONAL, INC.
Reel/Frame 069358/0006 →
SECURITY INTEREST
Recorded Oct 19, 2020
From: HAYNES INTERNATIONAL, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 054091/0935 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded May 31, 2016
From: KLARSTROM, DWAINE L.; MATTHEWS, STEVEN J.; ISHWAR, VENKAT R.
To: HAYNES INTERNATIONAL, INC.
Reel/Frame 038747/0452 →
Continuity (2)