Title:
SPHEROIDAL GRAPHITE CAST IRON
Document Type and Number:
Japanese Patent JP2020066772
Kind Code:
A
Abstract:
To provide a spheroidal graphite cast iron showing more excellent strength and ductility than an existing spheroidal graphite cast iron by improving the ratio in an elemental composition to be blended with the spheroidal graphite cast iron.SOLUTION: In a composition containing C:3.70-4.10 mass%, Si:1.40-2.00 mass%, Mn:0.30 mass% or less, Cu:0.30-0.51 mass%, Mg:0.027-0.045 mass%, S:0.006-0.009 mass%, P:0.015-0.021 mass% and Cr:0.06 mass% or less, and having a residue comprising Fe and inevitable impurities, a tensile strength of the composition is 600 MPa or more, an elongation of the composition is 5% or more, and an impact value of the composition at a room temperature and at -40°C is 6 J/cmor more.SELECTED DRAWING: Figure 7
Inventors:
MIZUNO SHINYA
YOSHIDA KOTA
HIRATA KOICHI
MATSUO TOMOKATSU
IKUMA SHUN
YOSHIDA KOTA
HIRATA KOICHI
MATSUO TOMOKATSU
IKUMA SHUN
Application Number:
JP2018200109A
Publication Date:
April 30, 2020
Filing Date:
October 24, 2018
Export Citation:
Assignee:
TOYOTA PROD ENG CORP
TOYOTA MOTOR CORP
TOYOTA MOTOR CORP
International Classes:
C22C37/04
Attorney, Agent or Firm:
Shirasaka Patent Office