Alloys or metallic compositions – Ferrous – Nickel containing – but 10 percent or less
Patent
1985-12-02
1990-04-10
Vee, Deborah
Alloys or metallic compositions
Ferrous
Nickel containing, but 10 percent or less
420122, C22C 3844
Patent
active
049159011
ABSTRACT:
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 same 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.
Sakakibara Yoshiaki
Shimada Haruo
Waseda Takashi
Nippon Steel Corporation
Vee Deborah
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