0.15∼0.35질량%의 C, 0.6질량% 초과 1.5질량% 이하의 Si, 1∼3질량%의 Mn, 0.3∼0.8질량%의 Cr, 0.005∼0.080질량%의 sol. Al, 0.005∼0.060질량%의 Ti, 0.005∼0.060질량%의 Nb, 150ppm 이하의 N, 0.035질량% 이하의 P, 0.035질량% 이하의 S, 0.01∼1.00질량%의 Cu, 0.01∼1.00질량%의 Ni을 포함하며, 잔부가 Fe 및 불가피 불순물로 이루어지고, Ti+Nb≤0.07질량%이고, 인장 강도 1300MPa 이상을 갖는 내식성과 저온 인성이 우수한 것을 특징으로 하는 차량 현가용 스프링 부품용 강이 개시된다.
Disclosed is steel, excellent in corrosion resistance and low-temperature toughness, for a vehicle suspension spring part, characterized in that it comprises 0.15 to 0.35% by mass of C, more than 0.6% by mass but 1.5% by mass or less of Si, 1 to 3% by mass of Mn, 0.3 to 0.8% by mass of Cr, 0.005 to 0.080% by mass of sol. Al, 0.005 to 0.060% by mass of Ti, 0.005 to 0.060% by mass of Nb, not more than 150 ppm of N, not more than 0.035% by mass of P, not more than 0.035% by mass of S, 0.01 to 1.00% by mass of Cu, and 0.01 to 1.00% by mass of Ni, the balance consisting of Fe and unavoidable impurities, with Ti + Nb ¤ 0.07% by mass, and has a tensile strength of not less than 1,300 MPa.
STEEL FOR AUTOMOTIVE SUSPENSION SPRING COMPONENT AUTOMOTIVE SUSPENSION SPRING COMPONENT AND MANUFACTURING METHOD FOR SAME
차량 현가용 스프링 부품용 강, 차량 현가용 스프링 부품 및 그 제조 방법
2015-11-25
Patent
Elektronische Ressource
Koreanisch
NEW AUTOMOTIVE-VEHICLE SPRING-SUSPENSION
SAE Technical Papers | 1922
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