This type of core rod is used as a concave mold by extending into the pipe. The core rod is not only small in size, but also has hollow holes. The edges of the core rod are few, and the strength of the core rod is reduced. In addition, the core rod is suspended at one end, also known as bridge stamping. These core rods have very high requirements for toughness and strength. Core rods with low hardness will bend and deform, and be pulled apart, while those with high hardness will break brittle. It is difficult to find a tool steel<\/strong> with both hardness and no fracture, which is also a pain point in the industry.<\/p>\n\n\n\n But this kind of core rod, which our customers use high toughness LG die steel, has long solved the problem.<\/p>\n\n\n\n LG is a high toughness tool steel<\/strong> exclusively developed by Yuhui Company. LG’s toughness is 8-9 times that of DC53, with a hardness of 54-58HRC. Its toughness is so good that it does not break even when bent.<\/p>\n\n\n\n A core rod is made of four types of tool steel<\/strong>. Many of our users choose tool steel<\/strong> not for selection, but for testing, experimentation, and unexpected opportunities. But often it can cause head injuries and bleeding, without a good outcome.<\/p>\n\n\n\n *******<\/p>\n\n\n\n Wu Dejian tool<\/strong> Steel<\/strong> is the user’s chief of staff and everyone who has used it buys it.<\/p>\n![\"\"](\"https:\/\/www.wudejiansteel.com\/wp-content\/uploads\/2026\/03\/\u51b2\u538b1mm\u539a\u94dd\u7684\uff0c\u6709\u4e2a\u9576\u4ef6\u5bb9\u6613\u88c2\uff0c\u73b0\u5728\u7528Cr12\uff0cCr12MoV\uff0c\u90fd\u662f\u5bb9\u6613\u65ad-576x1024.jpg\")
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