Currently, wear-resistant steel under 6 mm is mainly used in lightveight dumper carriage as the thinnestavailable specification is 3 mm. its shape and bending property are both in the domestic top level (the only cargocariage that side wall and bottom plate are made of 3mm wear-resistart steel). The advantage of wear-resistantdump truck compared with tradifional one lies in

●  light weight and reduced energy consumption, 50% and 33%weight loss compared with grade of 345 Pa and 700MPa respectively;

●  compared with the original material, ithas better wear resistance (3.5 times higher), longer service time and less maintenance,

●  the anti-smashingperfomance of cariage is improved under different working conditions.

High toughness crack-resistant and wear-resistant steel NM400Tuf-NM500Tuf of LY Steel, the latest up-grade of traditional wear-resistant steel, is the best strength and toughness matching wear-resistant steel for construction machinery in the domestic market, of which the cracking and crack propagation can be effectively inhibited by greatly improving impact toughness under the premise of ensuring the same level of product strength and hardness unchanged. The impact property of NM450Tuf at -20℃ can reach more than 100J, which is about 60%-80% higher than the traditional wear-resistant steel, up to 4 times of national standard.

The wear resistance of the wear-resistant steel is enhanced by the precipitation of superhard TiC particles . Its hardness and mechanical properties are equivalent to those of NM450, but the wear resistance is 1.6 times more than that of ordinary NM450 and 1.3 times more than that of NM550. LY Steel has successfully completed the task of "Industrial production of domestic extreme thin-gauge (4 ×2000mm) NM450SP" in the " 13th Five-Year" national key research and development project, which has advantages of strong plastic toughness and improved wear resistance.

The corrosion and wear resistant steel developed by LY Steel is mainly used in sanitation trucks, dredging projects, dredging pipelines and other industries. When corrosion wear occurs, the wear property of materials is affected by corrosion resistance, and the problem of poor wear property cannot be effectively solved by simply increasing hardness. The product is based on low alloy wear-resisting steel, with the addition of special composition to improve the self-corrosion potential, reduce the self-corrosion current density and decrease the acceleration of corrosion on wear.

At present, common carbon steel+ceramic lining plate are generally used for high temperature and wear re-sistant components in domestic metallurgy, coking and other industries, with poor safety, high component weight and cost, however, high temperature and wear resistant steel can effectively meet needs on lightweight, longer service time and cost saving for key components in metallurgical and other industries. NM450HiTemp is a high temperature and wear resistant steel, which can provide a cost-effective and wear-resistant solution under high temperatures ranging from 300 to 500°C.

NM300TP of LY Steel can be stably produced with thin thickness of 3.0mm, with yield ratio, shape and other indicators come up to the domestic leading level. The application of ultra-thin and high strength NM300TP can greatly improve the core competitiveness of mixer products. The weight of the drum can be reduced by 30-40% compared with ordinary truck. The welding of the whole plate with a width of 1800mm can be reduced by more than 30% with the cutting decreased by more than 40%, and the manufacturing cost can be cut by more than30%. At the same time, the service life of the carriage is 1-3 times higher than that of the traditional use of general carbon steel and high-strength steel, which reduces the cost in the process of vehicle operation.