The Contribution of Niobium Bearing Steels and Enhanced Sustainability
With the growing concern for the environmental impact of greenhouse gases and the rapid depletion of important resources, the use of Nb-bearing steels for advanced high strength steel applications can reduce raw material usage and the carbon footprint. The conservation and more efficient use of ironmaking and steelmaking raw materials is an urgent issue for steel producers globally. Recently-developed Nb-microalloyed steel applications provide a more effective product design and reduce CO2 emissions and energy consumption per tonne of steel. A sustainability structural steel study presents the positive cost and reduced environmental impact of Nb-microalloyed steels. This analysis compares the CO2 emission reduction and energy savings in the steelmaking process melted in both the Basic Oxygen Furnace (BOF) and the Electric Arc Furnace (EAF). Nbmicroalloyed structural steels offer the opportunity to reduce the total weight of a given structure compared to a nonmicroalloyed steel construction. Generally, one considers the savings associated with less material and lower construction costs.In addition, there is an environmental benefit in the reduction in emissions (kilograms of CO2) and less energy consumption (GJ) due to the fact that less steel is melted. Plus, there are lighter sections and less material weight in the final end user design which reduces transportation and fabrication costs. A forecasted trend is presented which introduces an increased usage of microalloyed steel grades to replace traditional commodity-type non-alloyed higher carbon-manganese grades for environmental benefits and significant cost reduction.
JANSTO Steven
CBMM-Reference Metals Company,1000 Old Pond Road,Bridgeville,PA,USA
国际会议
The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)
北京
英文
86-89
2011-05-31（万方平台首次上网日期，不代表论文的发表时间）