The maraging alloys series containing copper but cobalt free have been investigated.

对含铜无钴马氏体时效合金系列进行了研究。

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A new type of maraging steel metal powder-cored wire for die TIG surfacing is developed.

研制了一种用于TIG模具堆焊的马氏体时效钢金属粉芯焊丝。

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The production process, application and developing trend of maraging steel are also summarized.

概述了马氏体时效钢的生产工艺，应用和发展趋向。

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But he also said he believed Iran is facing difficulty purchasing raw materials, particularly carbon fiber and maraging steel, it needs to produce this equipment.

WSJ: North Korea Nuclear Find Raises Fears It Will Share With Iran