化学成分牌号主要成分杂质含量(≤wt%)BeTiNiCuFeAlSiPb总和QBe2.01.8-2.1/0.2-0.25余量0.150.150.150.0050.5QBe1.91.85-2.100.1-0.250.2-0.4余量0.150.150.150.0050.5CuBe21.8-2.0Co≤0.20Ni+Co+Fe≤0.6CuBe1.00.40-0.70Co:2.35-2.70Cu+Be+Ni+Co≥99.5CuBe70.2-0.4Co+Ni:1.8-2.5Cu+Be+Ni+Co≥99.0)