Model: H59 Brass Round Bar. Chemical composition Copper: Cu: 57.0 ~ 68.0 zinc zn: balance lead Pb: ≤ 0.5 boron P: ≤ 0.01 iron Fe: ≤ 0.3 beryllium Sb: ≤ 0.01 bismuth Bi: ≤ 0.003 impurities ≤ 10. Features: good electrical conductivity, fine structure, high hardness, not easy to bend; excellent cutting performance suitable for parts processed by automatic lathes and CNC lathes.