C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/18 (2006.01) C21D 6/00 (2006.01) C21D 8/10 (2006.01) C21D 9/08 (2006.01) C22C 38/40 (2006.01) C22C 38/58 (2006.01) F16L 9/02 (2006.01)
Patent
CA 2249964
A martensitic stainless steel pipe comprises, on the weight basis, C:0.005 to 0.2%, Si: 1% or below, Mn: 0.1 to 5%, Cr: 7 to 15%, and Ni: 0 to 8%, wherein a wall thickness t (mm) and contents of C and Cr satisfy the relationship represented by the following equation (1). t (mm) ~ exp{5.21 -18.1C (%) - 0.0407Cr (%)} ...... (1) The steel pipe can be made by employing water quenching as a quenching method.
Amaya Hisashi
Kondo Kunio
Ueda Masakatsu
Gowling Lafleur Henderson Llp
Sumitomo Metal Industries Ltd.
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