铍青铜QBE2BE1.80-2.1,NI0.2-0.5,AL≤0.15,FE≤0.15,PB≤0.005,SI≤0.15,CU余量,杂质总和≤0.5QBE1.9BE1.85-2.1,NI0.2-0.4,TI0.10-0.25,AL≤0.15,FE≤0.15,PB≤0.005,SI≤0.15,CU余量,杂质总和≤0.5QBE1.9-0.1BE1.85-2.1,NI0.2-0.4,TI0.10-0.25,MG0.07-0.13,AL≤0.15,FE≤0.15,PB≤0.005,SI≤0.15,CU余量,杂质总和≤0.5)