◇化学成分(wt%)：合***号CPSMnSiNiCrCoMoCuFe不大于1J760.030.0200.0200.3-0.60.15-0.3075.0-76.51.8-2.2--4.8-5.2余1J770.030.0200.0200.3-0.60.15-0.3075.0-78.0--3.9-4.54.8-6.0余1J790.030.0200.0200.6-1.10.30-0.5078.5-80.0--3.8-4.1≤0.20余1J800.030.0200.0200.6-1.11.10-1.5079.0-81.52.6-3.0--≤0.30余1J850.030.0200.0200.3-0.60.15-0.3079.0-81.0--4.8-5.2≤0.2.余1J860.030.0200.020≤1.00≤0.3080.5-81.5--5.8-6.2-余)