| 摘要 |
A steel for producing railway and street cars switch crossbars of blind intersection with content of iron of weight percent of carbon between 0.15 and 0.20 %, manganese between 1.00 and 1.80 %, silicon between 1.00 and 1.60 %, chrome between 1.50 and 2.50 %, nickel between 2.50 and 3.50 %, molybdenum between 0.40 and 0.70 %, and boron between 0.0025 and 0.0050 %.
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