PROBLEM TO BE SOLVED: To provide a corrosion resistant steel for marine excellent in coating corrosion resistance and coated film adhesiveness.SOLUTION: There is provided a corrosion resistant steel material for marine containing, by mass%, C: 0.01 to 0.2%, Si: 0.10 to 0.30%, Mn: 0.5 to 1.2%, P: 0.005 to 0.020%, S: over 0% and 0.004% or less, Al: 0.02 to 0.08%, Cu: 0.15 to 0.5%, Ni: 0.15 to 0.5%, Cr: 0.05 to 0.3%, Ti: 0.005 to 0.02%, N: 0.0020 to 0.008% and Ca: 0.0010 to 0.01% and the balance iron with inevitable impurities and having a ratio of Ti/N of 1.0 to 3 and a ratio of Cu/(S×10) satisfying 5.5 to 45.SELECTED DRAWING: None
【課題】塗装耐食性および塗膜密着性に優れた船舶用耐食鋼材を提供する。【解決手段】質量%で、C:0.01〜0.2%、Si:0.10〜0.30%、Mn:0.5〜1.2%、P:0.005〜0.020%、S:0%超0.004%以下、Al:0.02〜0.08%、Cu:0.15〜0.5%、Ni:0.15〜0.5%、Cr:0.05〜0.3%、Ti:0.005〜0.02%、N:0.0020〜0.008%、およびCa:0.0010〜0.01%を含有し、残部が鉄および不可避的不純物からなり、Ti/Nの比が1.0〜3であると共に、Cu/(S×10)の比が5.5〜45を満足する船舶用耐食鋼材である。【選択図】なし
CORROSION RESISTANT STEEL FOR MARINE AND MARINE
船舶用耐食鋼材および船舶
2017-06-01
Patent
Electronic Resource
Japanese
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