| 摘要 |
Rolling structure steel, comprising: 0.90-1.00% by wt. C; 0.95-1.05 % by wt Si; 0.25-0.45 % by wt Mn; 0.015 % by wt S max.; 0.025 % by wt. P max.; 1.30-1.50 % by wt. Cr, and 0.17-0.20 % by wt. Mo. Preferably this steel is produced by austenising at 860 + 20 DEG C, quenched in oil and tempered at 240 + 20 DEG C. In this way steel is obtained having a high rolling contact fatigue strength and dimensional stability at elevated temperature operating conditions. |
