PROBLEM TO BE SOLVED: To provide a high durability steel for a stabilizer in which cost reduction is achieved, and further, in a production process gentle for the global environment, excellent in cold temperature-low temperature toughness at the tensile strength of a 1,200 Mpa class or higher.SOLUTION: Provided is a steel for a stabilizer obtained by molding and quenching a steel having a prescribed componential composition, in which, particularly, the total of a Cu amount and an Ni amount is controlled to 0.15 mass% or higher, and the balance Fe with inevitable impurities into a stabilizer shape, and the crystal grain size thereafter lies in the range of 7.5 to 10.5 in an old austenite grain size number.
【課題】コストダウンはもとより、地球環境にやさしい製造工程にて、引張強さ:1200MPa級以上で優れた常温・低温靭性を有する高耐久性のスタビライザー用鋼を提供する。【解決手段】所定の成分組成を有し、特に、Cu量+Ni量を0.15質量%以上とし、残部がFeおよび不可避的不純物からなる鋼を、スタビライザー形状に成形して焼入れた後の結晶粒度が、旧オーステナイト粒度番号で7.5〜10.5の範囲とする。【選択図】なし
STEEL FOR STABILIZER HAVING HIGH STRENGTH AND EXCELLENT IN CORROSION RESISTANCE, STABILIZER FOR VEHICLE USING THE SAME, AND METHOD FOR PRODUCING THE SAME
高強度で耐食性に優れたスタビライザー用鋼と、それを用いた車両用スタビライザーおよびその製造方法
2015-10-22
Patent
Electronic Resource
Japanese
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