C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/121
C22C 38/44 (2006.01) C22C 38/08 (2006.01) C22C 38/16 (2006.01) C22C 38/58 (2006.01)
Patent
CA 1273511
ABSTRACT OF THE DISCLOSURE A high-purity reinforcing steel resistant to salt and capable of preventing deterioration of concrete substantially completely over a long period when the salt content of the concrete is not greater than 0.5 wt% in terms of Nacl amount in the sand of concrete. The reinforcing steel essentially consists of 0.001 to 1.0 wt% of C, less than 0.01 wt% of Si, 0.01 to 2.0 wt% of Mn, less than 0.015 wt% of P, less than 0.005 wt% of S, 0.01 to 0.5 wt% of Cu, 0.01 to 0.5 wt% of W, 0.001 to 0.10 wt% of Al and the balance Fe and incidental impurities. Disclosed also is another reinforcing steel capable of remarkably retarding deterioration of concrete even under such a severe corrosive condition that the salt content of the concrete exceeds 0.5 wt% in terms of Nacl amount in the sand of concrete. This reinforcing steel essentially consists of 0.001 to 1.0 wt% of C, not greater than 0.05 wt% of Si, 0.01 to 2.0 wt% of Mn, less than 0.015 wt% of P, less than 0.005 wt% of S, 1.0 to 5.5 wt% of Ni, 0.001 to 0.5 wt% of W, 0.001 to 0.1 wt% of Al and the balance Fe and incidental impurities.
496811
Sakakibara Yoshiaki
Shimada Haruo
Waseda Takashi
Gowling Lafleur Henderson Llp
Nippon Steel Corporation
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