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The Indian iron and SPA-H weathering 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 SPA-H weathering steel decline was 7.7%, about 8 million tons. " Isa said.
Boiler steel plate mainly refers to the hot-rolled medium and thick plate materials used to manufacture superheater, main steam pipe and heating surface of boiler fire chamber. The commonly used SPA-H weathering steel, boiler steel is low carbon killed steel smelted in open furnace or low carbon steel smelted in electric furnace, with carbon content in the range of 0.16% - 0.26%.
A204 Grade A steel chemical composition(%)Carbon: 0.18-0.25 Manganese max.: 0.90Phosphorus Max.: 0.025Sulfur Max.: 0.025Silicon: 0.15-0.40Molybdenum: 0.45–0.60SPA-H weathering steel, A204 Grade A steel mechanical propertiesTensile strength, kis [MPa]: 265-85 [450-585]Yield strength, min, kis [MPa]: 37 Elongation in 8 in. [200 mm], min, %: 19Elongation in 2 in. [50 mm], min, %: 23
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