C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
C22C 38/04 (2006.01) C21D 8/08 (2006.01) C21D 9/52 (2006.01) E04C 5/01 (2006.01) C21D 9/64 (2006.01)
Patent
CA 2184015
A high strength steel strand for PC of a wire material having a pearlite structure and containing 0.80 to 1.30 % of C, 0.60 to 2.50 % of Si and 0.30 to 1.50 % of Mn, remainder being Fe and unavoidable impurities, wherein a cementite portion of the wire material comprises a mixed structure of fibrous cementite and granular cementite, the volumetric proportion of the granular cementite to the total cementite is 10 to 40 %, the particle diameter of the granular cementite is 40 to 300.ANG., and the strand has a tensile strength of 235 kgf/mm2 or higher and an elongation of 3.5 % or greater.
Ibaraki Nobuhiko
Kaiso Masato
Kodama Masaru
Suwa Toshiki
Yamada Masao
Marks & Clerk
Shinko Kosen Kogyo Kabushiki Kaisha
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