C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/22 (2006.01) C21D 1/28 (2006.01) C21D 6/02 (2006.01) C22C 38/00 (2006.01) C22C 38/18 (2006.01) C22C 38/26 (2006.01) C22C 38/32 (2006.01) C21D 6/00 (2006.01) C21D 8/02 (2006.01)
Patent
CA 2316771
A heat-resistant steel contains 0.1-3 mass% of Cr and satisfies the following equation:0.1 <= Nb + Mo + V and MX-type complex precipitates formed inside microcrystalline grains contain 30 mass% or more of Mo and 7 massy or more of Nb. Also provided is a process for producing the alloy steel product involving casting, forging, hot rolling, normalizing, optionally direct quenching, cooling at a predetermined cooling rate, and tempering.
Gowling Lafleur Henderson Llp
Sumitomo Metal Industries Ltd.
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