| 摘要 |
Iron/nickel alloy having a low coefficient of expansion, the chemical composition of which comprises iron, nickel, manganese, silicon, calcium, magnesium, less than 0.005% of aluminum, less than 0.001% of sulfur, less than 0.01% of oxygen, less than 0.005% of nitrogen, and less than 0.003% of phosphorus, the chemical composition furthermore satisfying the relationship:<paragraph lvl="0"><in-line-formula>S<=0.02xMn+0.8xCa+0.6xMg</in-line-formula>
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