专利名称：SPRING STEEL AND SPRING
发明人：TERAMOTO, SHINYA,KUBOTA, MANABU 申请号：EP12824592
申请日：20120815
公开号：EP2746420A4
公开日：
20150603
专利内容由知识产权出版社提供
less is more是谁提出的
摘要：The present invention provides a spring steel, which is finally formed into a spring, by making use of, at a maximum, the temper softening resistance effect due to alloying elements while suppressing the formation of hard inclusions of SiO2 and the generation of decarburization, which may cause deterioration of fatigue characteristics of the spring. The spring steel is characterized by comprising, in % by mass, C: 0.50 to 0.70%, Si: 1.00 to 5.00%, Mn: 0.30 to 2.00%, P: 0.0002 to 0.0500%, S: 0.0002 to 0.0500%, Cr: 0.10 to 3.50%, Al: 0.0005 to 0.0500%, and N: 0.0020 to 0.0100%, with the balance being Fe and inevitable impurities, wherein the H-value defined by the following equation (a) is 160 or more, and the C-value defined by the following equation (b) is 3.25 or less:
H=33.6C+10.0Si+5.95Mn+11.1Cr+90.0 and C=Si/Mn
申请人：NIPPON STEEL & SUMITOMO METAL CORPORATION
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