| 摘要 |
PURPOSE:To produce a Cr stainless steel having excellent intergranular corrosion resistance of a weld zone and high strength of a rim by incorporating specific ratios of C, N, Si, Mn, Cr, Ni, Al, and Cu into Fe, and maintaining a prescribed CE value. CONSTITUTION:The stainless steel which contains, by wt%, <=0.035% C, <=0.02% N, <=0.04% C+N, <=0.8% Si, <=3.0% Mn, 12.5-17% Cr, 0.5-2.85 Ni, <0.005 Al (lower limit is about 0.005%), <=2.5% Cu, satisfies CE=2Cr(%)+3Si(%)+5 Al(%)-80(C+N)(%)-6Ni(%)-4Mn(%)-5Cu(%)=5-18 and consists of the balance Fe and inevitable impurities is prepd. The inevitable impurities are required to be specified to about <=0.05% P and about <=0.01% S. The stainless steel for the bicycle rim with which the intergranular corrosion resistance for the weld zone is substantially assured and which excels strength and toughness as a rim is thus obtd.
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