Nao Yoshihara

Steel wire for cold-formed spring excellent in corrosion resistance and method for producing the same

Steels for high-strength springs excellent in cold workability and quality stability

STEEL WIRE MATERIAL FOR SPRING AND ITS PRODUCING METHOD

Spring steel superior in workability

Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring

High carbon steel wire rod having excellent wire drawability

SPRING STEEL WITH EXCELLENT RESISTANCE TO HYDROGEN EMBRITTLEMENT AND STEEL WIRE AND SPRING OBTAINED FROM THE STEEL

Steel wire material for high-strength spring which has excellent wire-drawing properties and process for production thereof, and high-strength spring

Non-heat treated wire or bar steel for springs

STEEL WIRE ROD FOR HIGH-STRENGTH SPRING EXCELLENT IN WIRE DRAWABILITY, MANUFACTURING METHOD THEREFOR, AND HIGH-STRENGTH SPRING