配方类型：	METALS AND THEIR TREATMENT
配方说明：	Glass-to-Metal Seal Alloy (Low Expansion) (U.S. Patent 2,491,787)
配方组成：	Iron/To make 100 Manganese/0.5 Nickel/26.5-29.6 Copper/0.25-5.0 Cobalt/17.5

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