Why is the fatigue fracture resistance of NM400 wear resistant steel sheet so good

Posted:2021-12-09 18:10:08

The mechanical properties of NM400 wear resistant steel sheet mainly include toughness, ductility, strength and elastic modulus, which are clearly specified in the national standard. Generally, it can be found in the mechanical design manual or described in detail in the manufacturer's product manual.

The strength of NM400 wear resistant steel sheet puts forward the strength requirements of the materials used, namely ultimate strength or yield strength, fatigue strength, tensile strength or compressive strength, based on the analysis of the working conditions and failure of the parts. The tensile strength of wear-resistant plate is better than that of ceramic; Cast steel, ceramics and graphite are brittle materials with strong chemical bonds. However, under the action of compressive stress, the cracks tend to close, so these wear-resistant materials have high compressive strength. Under dynamic stress, fatigue strength must be considered. The fatigue fracture resistance of NM400 wear resistant steel sheet is obviously better than that of polymer and composite materials.

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