1、Q460NHC耐候钢板化学成分CSiMnPSNiCrMoCuNbVTiAltZr≤0.12≤0.65≤1.5≤0.025≤0.030.12~0.650.3~1.25≤0.30.2~0.550.015~0.060.02~0.120.02~0.1≥0.02≤0.15成分备注：为改善性能，根据需要可添加Nb、V、Ti、Alt中一种或几种合金元素；Nb+V+Ti≤0.22。2、Q460NHC耐候…