1.8974 steel for large truss truck boom inventory summary

On October 16, 2019, the Board of Directors of the World Steel Association (worldsteel) elected the following new officers for 2019/2020 at the worldsteel General Assembly in Monterrey. The new 1.8974 steel for large truss truck boom officers are elected

On October 16, 2019, the Board of Directors of the World Steel Association (worldsteel) elected the following new officers for 2019/2020 at the worldsteel General Assembly in Monterrey. The new 1.8974 steel for large truss truck boom officers are elected for a one-year period: Chairman - YU Yong, Chairman, HBIS Group Co., Ltd. Vice Chairman - Sajjan JINDAL, Chairman and Managing Director, JSW Steel Limited.

The hardness and impact toughness of precipitation-strengthened wear plates, 1.8974 steel for large truss truck boom are also improved. For example, the hardness of the wear-resistant plate after precipitation strengthening is 230-300 HBW, and the impact toughness is 140-180. More importantly, the improvement of the above indicators does not bring about a significant decrease in plasticity. The performance of the wear-resistant plate after water quenching at 1100℃, first holding at different temperatures in the middle temperature zone, and then water quenching at 970℃. With the increase of the holding temperature in the middle temperature zone and the extension of the holding time, the number of carbides in the steel increases, and the precipitation strengthening effect increases, resulting in an increase in hardness.

Cold formed hot rolled pickled automotive structural steel QSTE500TM
Material QSTE500TM chemical composition (melting analysis)%
Carbon: ≤0.12, Silicon: ≤0.35 ,Manganese: ≤1.70, Phosphorus: ≤0.03, Sulfur: ≤0.025, Titanium: ≤0.22, Niobium: ≤0.09
Aluminum : ≥0.015
Specimen test (tensile, bend, specimen is transverse; Mpa).
Yield strength MPa: ≥500
Tensile strength MPa: 550-700
Elongation: ≥17

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