BB41BF高炉炉壳钢板(BB41BFC、BB41BFD)BB41BF钢板(BB41BFC、BB41BFD)力学性能牌号厚度屈服抗拉伸长率冲击温度/冲击功180弯曲试验BB41BFC BB41BFD≤16mm≥245400-510≥220℃/≥47J-20℃/≥47JD=2a＞16-40mm≥235＞40-100mm≥215≥24BB41BF钢板(BB41BFC、BB41BFD)化学成分牌…