| 摘要 |
<p>High-rigidity stainless steel sheet is provided for CPU socket frames or retention covers that are lower in cost and have a better fastening performance compared to conventional ones. The stainless steel sheet has a Young's modulus E<SUB>T </SUB>in the T direction that is 210 GPa or above, an 0.2% yield strength sigma<SUB>0.2L </SUB>in the L direction that is from 500 to 900 MPa, and an 0.2% yield strength sigma<SUB>0.2T </SUB>in the T direction that is from 600 to 900 MPa, with the L direction being steel sheet rolling direction and the T direction being a direction perpendicular to the rolling direction (that is, a direction perpendicular to both the rolling direction and the sheet thickness direction). In the stainless steel sheet, the relationship between the Young's modulus E<SUB>L </SUB>(GPa) in the L direction and the Young's modulus E<SUB>T </SUB>(GPa) in the T direction is preferably E<SUB>L</SUB><=E<SUB>T</SUB>-15.</p> |
