The Indian iron and A588 grade B high strength steel Steel Association (ISA) lowered its steel demand forecast for 2020 to 5.1% from 5.1% in February this year. The figure is expected to hit a low of 7.7%. The company said in an official statement that the current share price has fallen sharply due to the huge downside risk. "We expect India's finished steel demand to fall to about 93.7 million tons by 2020, down from 101.5 million tons in 2019." This calendar year, the A588 grade B high strength steel decline was 7.7%, about 8 million tons. " Isa said.
The deoxidation ability of Al is much stronger than that of Si and Mn when aluminum element (Al element) is added into steel as deoxidizer or alloying element. The main role of aluminum in A588 grade B high strength steel etc. steel is to refine grain size and fix nitrogen in steel, so as to significantly improve the impact toughness of steel and reduce the tendency of cold brittleness and aging. Al element can also improve the corrosion resistance of steel, especially when used with molybdenum, copper, silicon, chromium and other elements. The wear resistance of chromium molybdenum steel and chromium steel can be increased by containing Al element.
S420MC hot-rolled automobile structural steel chemical composition (melting analysis)% C: ≤0.12, Si: ≤0.50, Mn: ≤1.60, P: ≤0.025, S: ≤0.020, Alt: ≥0.015, Nb: ≤0.09, V: ≤0.20, Ti: ≤0.10 Mechanical properties Yield strength MPa: ≥420 Tensile strength MPa: 480-620 Elongation: ≥16
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