天津聚源天太钢铁022-26801886S275JR（≤40mm）化学成分（质量分数）/%C≤0.135Mn≤0.0635P≤0.2645S≤0.045N≤0.009S275JR（>40mm）化学成分（质量分数）/%C≤0.135Mn≤0.0635P≤0.2645S≤0.045N≤0.009S275JR（≤16mm）化学成分（质量分数）/%C≤0.21Mn≤1.50P≤0.035S≤0.035Cu≤0.55N≤0.012其他：S275钢S275JR（>16---≤40mm）化学成分（质量分数）/%C≤0.21Mn≤1.50P≤0.035S≤0.035Cu≤0.55N≤0.012其他：CEV≤0.40--≤0.44S275JR（>40mm）C≤0.22Mn≤1.50P≤0.035S≤0.035Cu≤0.55N≤0.012其他：(≤30--≤400mm))