"maraging steel" meaning in English

{
  "forms": [
    {
      "form": "maraging steels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
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      "expansion": "maraging steel (usually uncountable, plural maraging steels)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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      ],
      "glosses": [
        "A high-strength, but low-carbon, workable steel alloy with 15-25% nickel and lesser amounts of cobalt and other materials, that achieves it strength by a martensitic structure achieved by heat treatment and aging."
      ],
      "id": "en-maraging_steel-en-noun-vHTcsdsU",
      "links": [
        [
          "cobalt",
          "cobalt"
        ],
        [
          "martensitic",
          "martensitic"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ],
      "wikipedia": [
        "maraging steel"
      ]
    }
  ],
  "word": "maraging steel"
}

{
  "forms": [
    {
      "form": "maraging steels",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "2": "s"
      },
      "expansion": "maraging steel (usually uncountable, plural maraging steels)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns"
      ],
      "glosses": [
        "A high-strength, but low-carbon, workable steel alloy with 15-25% nickel and lesser amounts of cobalt and other materials, that achieves it strength by a martensitic structure achieved by heat treatment and aging."
      ],
      "links": [
        [
          "cobalt",
          "cobalt"
        ],
        [
          "martensitic",
          "martensitic"
        ]
      ],
      "tags": [
        "uncountable",
        "usually"
      ],
      "wikipedia": [
        "maraging steel"
      ]
    }
  ],
  "word": "maraging steel"
}