03-01-2019 дата публикации
Номер: US20190003022A1
Принадлежит:
A cast steel member, comprising: 0.10 to 1.00% of C, greater than 0.7% to 2.0% or less of Si, 0.3 to 2.0% of Mn, 2.0% or less of Cu, residual Fe and inevitable impurities, as represented by weight %, wherein Si (%)<=C (%)×10. 1. A cast steel member , comprising: {'br': None, 'Si (%)<=C (%)×10.'}, '0.10 to 1.00% of C, greater than 0.7% to 2.0% or less of Si, 0.3 to 2.0% of Mn, 2.0% or less of Cu, residual Fe and inevitable impurities, as represented by weight %, wherein'}2. The cast steel member according to claim 1 , comprising:0.15 to 0.40% of C, 1.1% to 2.0% of Si, 0.5 to 1.5% of Mn, 0.5 to 1.5% of Cu, residual Fe and inevitable impurities, as represented by weight %.3. The cast steel member according to claim 1 , wherein{'sup': '2', 'an impact value (normal temperature) is 15 J/cmor more, a tensile strength is 680 MPa or more to less than 1000 MPa, a 0.2% yield strength is 450 MPa or more, and an elongation is 12% or more.'}4. The cast steel member according to claim 2 , wherein{'sup': '2', 'an impact value (normal temperature) is 15 J/cmor more, a tensile strength is 680 MPa or more to less than 1000 MPa, a 0.2% yield strength is 450 MPa or more, and an elongation is 12% or more.'}5. The cast steel member according to claim 1 , having a minimum thickness of 10 mm or less.6. The cast steel member according to claim 2 , having a minimum thickness of 10 mm or less.7. The cast steel member according to claim 3 , having a minimum thickness of 10 mm or less.8. The cast steel member according to claim 4 , having a minimum thickness of 1 to 6 mm or less.9. The cast steel member according to claim 1 , which is as-cast.10. The cast steel member according to claim 2 , which is as-cast.11. The cast steel member according to claim 3 , which is as-cast.12. The cast steel member according to claim 5 , which is as-cast.13. The cast steel member according to claim 8 , which is as-cast.14. The cast steel member according to claim 1 , which is for an undercarriage.15. The cast ...
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